Telesp

Background

From the 1940s and 1950s onward, Brazilian cities, especially the major urban centers, had high pent-up demand for telephones, because a set of technical and economic factors led the country's private telephone operators to stop investing in the expansion and modernization of telephone systems, causing serious friction with the granting authorities. Institutional changes in the sector effectively began in 1962 with the Brazilian Telecommunications Code^[8] and resulted in the creation of Embratel (1965)^[9], the intervention and nationalization of Companhia Telefônica Brasileira (1966)^[10], the creation of the Ministry of Communications (1967)^[11], and the creation of the Telebras system (1972)^[12][13], the latter promoting the unification of operators at the state level and eliminating the incompatibility that existed between the telephone systems of the time.

Predecessors

List of the main telephone operators (public and private) that were incorporated and formed Telesp:^[14][15]

CTB

Company that gave rise to Telesp, through its São Paulo Operations Directorate (DOSP). It served São Paulo, Campinas, Santos and about 180 more cities throughout the state.^[16] It incorporated the following companies: S.T.M. Paulínia, S.T.M. Tabatinga, S.T.M. São José dos Campos, S.M.T.A. Araraquara, S.M.T.A. Taubaté, S.M.T.A. Guarujá, Soc. Telefônica da Estância (Serra Negra), S.T.M. Aguaí, S.T.M. Porto Ferreira, S.M.T.A. Rio Claro and Telefônica Lemense.

COTESP

Created in 1964 by the government of the state of São Paulo through the purchase of shares of the former Companhia Telefônica Tupi, it served about 170 cities. It incorporated the telephone service of the Estrada de Ferro Campos do Jordão, the Central Telefônica de Cachoeira Paulista, the Telefônica Salto de Pirapora and various municipal telephone systems (including S.M.T.A. Aparecida and the Telefônica Municipal de Caraguatatuba). Its concessions were transferred in 1973 and 1975 through an agreement.^[17][18]

S.T.M. / S.M.T.A.

Many cities had their own Municipal Telephone Systems (S.T.M.), almost all with obsolete manual exchanges. Some larger cities were able to obtain automatic exchanges; for this purpose, Municipal Automatic Telephone Services (S.M.T.A.) were created.

Main private operators:

Creation of Telesp

Formed as a subsidiary of Telebras on 12 April 1973,^[35][36] it began operational activities on 31 May 1973 with the incorporation of the assets of Companhia Telefônica Brasileira in the state of São Paulo.^[37][38][39]

Telesp was accredited as a holding company in the state by Ordinance No. 369 of 31 May 1973, in accordance with the guidelines and the policy of unifying the telephone system adopted by the Ministry of Communications, since the telephone system was granted at the time to several operators, both private and public.^[40][41]

Integration of state telephony

After its creation in April 1973, the processes of incorporation, expropriation, acquisition of holdings, or transfer of concession of the other operators existing in the state were gradual, from June 1973 until the beginning of 1980, with Teleoesp remaining last; its concession was revoked in July 1987.^[42] In cases of incorporation of a company, Telesp would first acquire controlling interest or become a shareholder and only then incorporate it. The only exception was Companhia Telefônica da Borda do Campo, whose controlling interest Telesp acquired but kept under separate administration without incorporation.^[43]

1973

• Incorporation: Empresa Telefônica Paulista,^[44] Cia. Telefônica Rio Preto,^[45] Cia. Telefônica Média Mogiana and S.T.M. Porto Ferreira,^[46] Cia. Telefônica de Vinhedo and Telefônica Jacareí,^[47] Cia. Telefônica de Atibaia^[48]
• Acquisition of holdings: Empresa Telefônica Monte Mor, Telefônica Águas de São Pedro, S.T.M. Charqueada and S.T.M. Embu-Guaçu, S.M.T.A. São João da Boa Vista, S.T.M. João Ramalho and S.T.M. Ribeirão do Sul, Empresa Telefônica Sumaré, S.T.M. Vargem Grande do Sul, S.T.M. Monte Alto, Empresa Telefônica Dourado and S.T.M. Anhumas
• Transfer of concession: S.T.M. Elias Fausto,^[49] S.T.M. Ariranha,^[50] S.T.M. Marabá Paulista,^[51] S.T.M. Pirangi,^[52] S.T.M. Santo Expedito,^[53] S.T.M. Morungaba,^[54] S.T.M. Cabreúva,^[55] S.T.M. Santo Antônio do Jardim,^[56] S.T.M. Mairiporã,^[57] S.T.M. Ipeúna,^[58] COTESP (urban services in 89 locations),^[59] S.T.M. Paraíso,^[60] S.T.M. Luís Antônio,^[61] S.T.M. Dumont,^[62] S.T.M. Alfredo Marcondes and S.T.M. Nazaré Paulista

1974^[63]

• Incorporation: Telefônica Fartura,^[64] Telefônica Jundiaí and Cia. Telefônica de Guarulhos,^[65] Empresa Telefônica de Cosmópolis, Empresa Telefônica Cammarosano and Empresa Telefônica Santa Cruz da Conceição
• Acquisition of holdings: S.T.M. Artur Nogueira and S.T.M. Rio das Pedras, Telefônica Botelhos, S.T.M. Conchal, S.T.M. Divinolândia and S.T.M. São Sebastião da Grama,^[66] S.M.T.A. Lins, S.T.M. Araçoiaba da Serra, S.M.T.A. Guaratinguetá, S.T.M. Itaí and S.T.M. Taquarituba^[67]
• Transfer of concession: S.T.M. Bofete,^[68] S.T.M. Borborema,^[69] S.T.M. Iperó and S.T.M. Taiaçu

1975^[70]

• Incorporation: Telefônica Pinhal,^[71] Telefônica Nacional,^[72] Telefônica Descalvado and Cia. Telefônica Alta Paulista,^[73] Empresa Telefônica Tibiriçá Feio
• Acquisition of holdings: S.T.M. Bálsamo,^[74] S.T.M. Nova Europa^[75] and S.T.M. Palestina^[76]
• Transfer of concession: COTESP (urban services in 86 locations),^[77][78] S.T.M. Jarinu^[79] and S.T.M. Paranapanema
• Indirect extinction: Empresa Telefônica de Jaguariúna^[80]

1976^[81]

• Incorporation: Telefônica Barbarense and COTESP,^[82][83] Cia. Telefônica do Litoral Paulista and Empresa Telefônica de Americana,^[84] Telefônica Pirassununga,^[85] Telefônica de Limeira, Cia. Telefônica Santa Rita, Cia. Telefônica Suburbana Paulista and Empresa Melhoramentos de Andradina,^[86] Cia. Telefônica de Ourinhos,^[87] Cia. Telefônica de Itanhaém, Cia. Telefônica de Pindamonhangaba, Cia. Telefônica de Valinhos and Empresa Telefônica Ararense,^[88] Telefônica Central Paulista, Empresa Telefônica Irmãos Camargo and Cia. Rede Telefônica Sorocabana^[89]
• Acquisition of holdings: Telefônica Anhanguera, Cia. Telefônica de Caieiras, Telefônica de Nova Odessa, Telefônica Patrocínio Paulista, Empresa Telefônica Paulista (Bariri) and Empresa Telefônica Tapiratiba^[90]
• Indirect extinction: Empresa Telefônica Coração de Jesus

1977^[91]

• Incorporation: CIPATEL^[92]
• Acquisition of holdings: Cia. Telefônica Registro and Telefônica Sul Paulista, in addition to municipal telephone services in 89 locations
• Indirect extinction: Empresa Telefônica Mogiana^[93]

1978^[94][95]

• Acquisition of holdings: CETELVI and Concessionária Telefônica Figueira e Guerra

1979^[96]

• Acquisition of holdings: Empresas Telefônicas Reunidas de Igarapava e Pedregulho^[97]

1980

• Expropriation: Telefônica União^[98][99]

1987^[100]

• Transfer of concession: Telecomunicações do Oeste Paulista^{[101][102][103]}

Exchanges with other operators

The cities of Paraty and Sapucaí-Mirim (former COTESP concession) were transferred to Telerj and Telemig respectively. Telesp also operated in Fronteira, a city that did not have its own telephone exchange, with its telephones connected to the exchange in Icém. In 1997 it began to be served by Companhia Telefônica do Brasil Central.

Operators not incorporated

Some operators were not acquired by Telesp or by its incorporated companies, such as Cia. Telefônica Alta Mogiana (Orlândia), Cia. Telefônica de Franca, Empresa Telefônica de Buritizal, Empresa Telefônica de Cajuru, Empresa Telefônica de Ituverava, S.T.M. Guaíra, S.T.M. Jardinópolis and Telefônica Intermunicipal (Batatais), all incorporated by Companhia Telefônica do Brasil Central, and Telefônica Mogi das Cruzes, incorporated directly by Companhia Telefônica da Borda do Campo. The only operator that remained active in the state without being incorporated by any other was Centrais Telefônicas de Ribeirão Preto.^[104]

Administrative headquarters

Its first administrative headquarters was the Sete de Abril Complex, located at Rua Sete de Abril, 309 – República, which had been the headquarters of the CTB's Diretoria de Operação São Paulo (DOSP). Its principal building is the Edifício Sete de Abril, an art deco property designed by Ramos de Azevedo in partnership with Severo & Villares at the renowned Escritório Técnico Ramos de Azevedo, and whose facade was listed in 1992.^[105] Its corporate headquarters, meanwhile, was on the 4th floor of the Edifício Itália, at Avenida São Luís, 50 – República. In 1975, the company's new headquarters building was inaugurated at Rua Martiniano de Carvalho, 851 – Paraíso, with 22 floors.^[106][107] Its construction had begun in 1972 under CTB, after the demolition of the former Avenida telephone exchange, installed on the site in 1920 and deactivated in 1969.^[108][109] After the move, the buildings on Rua Sete de Abril and Rua Basílio da Gama, which together form the Sete de Abril Complex,^[105] continued to be used as a customer service center for subscribers. It is currently the second in the city of São Paulo to receive a permit to carry out a retrofit under the rules of the Requalifica Centro program law. After being closed for more than a decade, it will be reopened under the name "Basílio 177", as an apartment condominium with an open gallery of shops and restaurants.^[110]

Presidents

• 1973–1979: The first Telesp board took office in April 1973, with Antonio Salles Leite as president. Until then, he had been CTB's economic-financial director, and he remained in office during the governments of Médici and Geisel.^[111]
• 1979–1985: Under the Figueiredo government, a new board took office in April 1979, with Carlos de Paiva Lopes as president; he had been vice-president in the previous administration.^[112]
• 1985–1990: A new board took office in March 1985 during the Sarney government, with Antonio Ignacio de Jesus as president; he had been the economic-financial director in the previous administration.
• 1990–1992: Oswaldo Lopes do Nascimento Filho and Marco Antonio Castello Branco, during the Collor government.^[113]
• 1992–1995: Waldemar Fernandes Neves, during the governments of Itamar Franco and Fernando Henrique.
• 1995–1998: Still under the Fernando Henrique government, the last Telesp board took office in July 1995, with Carlos Eduardo Sampaio Doria as president.^[114]

Regional management areas

The purpose of a regional management area was to market and operate telecommunications services, as well as to manage, operate, maintain, and control telecommunications systems and their supporting activities. The six regional management areas were São Paulo East (OL) and São Paulo West (OW),^[115] created in 1979 through the division of the regional unit headquartered in São Paulo; Center-South (OA), created in 1976 with headquarters in Campinas; Center-West (OB), created in 1977 with headquarters in Bauru; North (OT), created in 1978 with headquarters in São José do Rio Preto; and Southeast (OS), created in 1979 with headquarters in Santos.^[116] The regional management areas were divided into sectors, called operational districts; each had a coverage area composed of one or more tertiary areas. In the most important cities of each district there were Telesp Service Posts, where it was possible to make calls, buy tokens and phone cards, send and receive facsimile, consult telephone directories, etc.^[117] There were also Telesp Customer Service Stores, facilities strategically distributed across the state's main cities and structured and organized to offer every type of service that could not be provided through telephone support.^[118]

Locations served

Through 1992, its operating area covered a total of 532 cities. After the creation of new municipalities, the operating area increased to 583 cities in 1993 and 602 cities in 1997, serving about 30 million people in the state of São Paulo.^[119][120]

Fixed-line telephony

Main services provided:^[121]

• Local calls, long-distance calls via Direct Distance Dialing (DDD), and international calls via international direct dialing (DDI)
• Direct Inward Dialing (DDR): a service implemented in the 1970s, serving condominiums and larger companies^[122]
• Collect call (DDC): service inaugurated in 1982^[123]
• Toll-free dialing (DDG): 0800 service, implemented in the 1980s^[124]
• Features of CPA telephone exchanges: implemented gradually beginning in 1982, offering users new telephone-service features that were then unprecedented, including call transfer, call waiting, teleconference, abbreviated dialing, long-distance call blocking, dedicated line, and do-not-disturb service^[123][125]
• Telecard: launched in 1982, a card that allowed calls to be made without tokens or a phone card, with no payment at the time of the call; charges were debited to a telephone bill designated by the subscriber^[123]
• Disque 200: service inaugurated in 1983, used to provide varied information on different topics^[126]
• Modem: service inaugurated in 1984, equipment that turned any telephone into a receiving and transmitting hub for computer data via a video terminal^[126]
• Areafone: service inaugurated in 1984, aimed at high-traffic subscribers to reduce call costs^[127]
• Local calls to conurbated cities: service inaugurated in 1986 in the São Paulo, Campinas, and Santos areas^[128][129]

Public telephones

At first, the public telephones provided by Telesp were the "yellow orelhões" (with red telephone handsets that worked with telephone tokens), used to make local calls or long-distance calls to cities and localities within the same tariff area. These orelhões began to be installed in 1972 by CTB.

In 1975, the "blue orelhões" appeared (with blue telephone handsets that worked with DDD tokens), used to place direct long-distance calls to all cities and localities already integrated into the DDD system, or with operator assistance for the others.^[130][131]

There were also "semi-public telephones", installed in establishments accredited as bars, restaurants, hotels, and bakeries; they functioned both as a public telephone and as an ordinary telephone, thanks to a selector switch on the device.^[132]

In peripheral neighborhoods of large cities, as well as in rural neighborhoods that lacked telephony, there were so-called "vilafones", devices that made and received local and long-distance calls, installed in commercial establishments with easy public access.^[133]

To serve low-income populations, Telesp began installing orelhões in public housing developments in 1981. Also in 1981, the first public telephones for people with physical disabilities began to be installed.^[133] The first "community orelhão", a public telephone that made and received calls, was installed in August 1982 in the favela of Vila Prudente.^[134]

Another type of public telephone was "Falefácil", an alternative to "semi-public" phones, because it was a telephone with no dial or keys and only an indicator of minutes talked; the person who placed the call was the responsible party at the establishment where the device was installed. Implemented starting in 1986.^[135]

Later, many orelhões began to be replaced by concrete cabins with clear tempered glass. The cabins were first tested in the cities of São Paulo, Santos, Guarujá, São Vicente, and Campinas, and then installed throughout the state, but they were not well received.

The telephone tokens used in public telephones began to be replaced by telephone cards starting in 1993.^[136]

Symbol

In 1973, the famous "Orelhão of Itu", seven meters tall, was donated by the Minister of Communications Hygino Corsetti and installed by Telesp in Praça da Matriz in Itu. It is one of the city's main tourist attractions and one of the reasons for its fame as the "city where everything is big", because the minister, honored with a banquet at the inauguration, ended his speech with the following words: O Brasil é grande, mas eu sei que Itu é maior.^[137]

Videotex

Established through Ordinance No. 107 of 26 May 1980 of the Ministry of Communications, under which Telesp was tasked with preparing a feasibility study for implementing a system intended to transmit information through the telephone network, with output on a television set or other alternatives, authorizing the installation in the city of São Paulo of a service for feasibility evaluation and the respective operational tests.^[142]

The contract to supply the equipment required for the pilot deployment of videotex was signed in 1981, with the experimental phase beginning in the first half of 1982.^[133] The service was officially inaugurated in December 1982, as Brazil's first experience in this field.^[123]

Cellular telephony

Telesp Celular was the mobile telephone operator of the Telecomunicações Brasileiras S.A. (Telebras) system^[143] in the state of São Paulo, a subsidiary of Telecomunicações de São Paulo S/A (TELESP).^[144] After being privatized it retained the same name until 2003, when it became known as Vivo.^[145]

Origin

Initially a superintendence within Telesp, it began operations on August 6, 1993 in the analog system, at a time when cellular telephony was still being established in the country, being designated for the implementation and operation of the cellular telephone system in a concession area that included 620 municipalities.^[146][147]

It remained a subsidiary of Telesp until the privatization process carried out in July 1998.

Shortly before privatization, Telesp Celular established itself as the largest operator in Latin America, implementing cellular telephony in record time in the state, serving at the time about 1.141 million subscribers in 371 municipalities.^[148]

Internet

It included data communication and dial-up Internet services.

Telephone museum

The Museu do Telefone de São Paulo,^[164] inaugurated on 13 April 1977 as part of Telesp's anniversary celebrations, arose from the desire of president Antonio Salles Leite for there to be, in São Paulo, a museum dedicated to the device that revolutionized global communication.^[165] To publicize it, the museum appeared on the cover of the capital's subscriber telephone directory the following year.^[166]

Its collection consisted of objects belonging to Telesp and, chiefly, the acquisition of the private collection of gaúcho Carlos Becker, considered at the time the fourth largest private collection of telephones in the world. Combining the collections, the museum was one of the most important in the world, consisting of about 3,000 objects (including countless telephones), 100,000 black-and-white photos, 6,000 digitized photos, telephone directories, telephone cards, and various documents.^[167]

Located on the ground floor of Telesp's headquarters building and occupying an area of more than 700 square meters, it became a major cultural attraction in the city. However, it has been closed for years and is inaccessible to the public.^[167]

Addresses

The first official list of addresses of Telesp for the city of São Paulo was the 80/82 edition,^{[168][169][170]} published by LTB, since the last edition had been published in 1972,^[171] when the capital was still served by CTB; its publication was then discontinued due to the high production costs.

LTB also published the 82/84 edition,^[172][173] when the list was discontinued again. It resumed publication starting with the 88/89 edition,^[174][175] this time by OESP Gráfica, and from then on the São Paulo address list began to be published regularly every two years.^[176]

In the interior, the address lists were published together with the subscriber lists and the classified directory. Starting with the 85/86 edition, they began to be published separately and only for the main cities, as required by regulation.^[177] But there were exceptions, such as List 107–Guarulhos, which combined in the same volume the subscriber, address, and classified lists.

Lists published included 130–Santos,^[178] 134–São José dos Campos, 141–Campinas, 151–Piracicaba, 152–Limeira, 153–Americana, 154–Santa Bárbara d'Oeste,^[179] 156–Jundiaí,^[180] among others.

Subscribers/classified

Editions 73/74 to 1977–77/78

The official telephone directories of the city of São Paulo were published by the Editora de Guias LTB^[181] since the period when it was still served by the Companhia Telefônica Brasileira, namely the Lista Telefônica Assinantes^[182][183] and the Páginas Amarelas.^[184] For the interior, the directories were published by LTB^[185] (Vale do Paraíba, Norte Paulista, Litoral Santista, Leste Paulista^[186] and Sul Paulista), by LTP-Listas Telefônicas Paulista^[187] (Região Paulista, Região Sorocabana, Região Alta Paulista and Região Litoral^[188]) and by LTN-Lista Telefônica Nacional (Região Araraquarense^[189] and Região Noroeste).^[190] And for the companies not yet incorporated by Telesp, local telephone directories were published by various publishers, such as those of Sorocaba, Osasco, Guarulhos, Pindamonhangaba, Guaratinguetá, Espírito Santo do Pinhal, among others.^[187][191] But the relationship between LTB and Telesp began to deteriorate markedly from 1977 due to various factors, among them the noticeable decline in the quality and reliability of the directories published from 1975 onward, culminating in the very poor quality of the 1977 edition of the São Paulo Subscribers List, and the non-distribution of thousands of copies of that edition to subscribers, resulting from the fact that LTB was experiencing serious financial problems.^[192] From the 1977–77/78 edition onward, Telesp's telephone directories began to feature thematic series printed on the covers, starting with figures and places related to the Bandeirantes.^[185]

Editions 1978–78/79 to 1983–83/84

From the 1978–78/79 edition onward, the official telephone directories were standardized, each with a national code of Telebrás^[166] and coverage based on tertiary areas. For this purpose, the state's tertiary areas were grouped into 12 regions: São Paulo/Guarulhos, Osasco/Jundiaí, Santos, Baixada Santista, São José dos Campos, Campinas, Piracicaba, Bauru, Sorocaba, Araçatuba, São José do Rio Preto and Araraquara.^[193] Even with Telesp facing problems with LTB, the president of Telebras ordered the contract with this company to be extended until 1983, because it received government help through loans as a solution to its financial difficulties.^[194]

During this period, thematic series continued to be printed on the covers, including museums in the 1978–78/79 edition,^[166] the coffee route in the 1979–79/80 edition, the three million installed telephones in the 1982–82/83 edition, and the celebration of the company's tenth anniversary in the 1983–83/84 edition.^[173]

Period without publication To comply with the new regulation on publishing telephone directories (Decreto nº 88.221 de 07/04/1983 and Portaria nº 189 de 20/10/1983), Telesp would have to open tender processes to publish them after the end of the contracts then in force.^[195] But in June 1983, before its end, LTB unilaterally terminated the contract with Telesp, considering it harmful to the company, even though it had numerous privileges that other publishers did not have. As a result, it stopped publishing the 1984 edition directories that were part of the contract, in addition to not distributing thousands of copies of the 1983 edition of the São Paulo/Guarulhos Subscribers List^[196] and of other regions.^[197] The termination compromised the production of new directories, causing significant harm to the entire population of the state of São Paulo.^[127] LTB wanted to go back, but Telesp had already accepted the termination of the contract, because it did not agree with the requirements the publisher wanted in order to be favored even more.^[194][198] At the same time, EBID, another company in the Grupo Gilberto Huber, began to publish guides under the registered brand Páginas Amarelas, distributing them in parallel with the official directories,^[194][199] creating a long legal dispute with Telesp that lasted almost eight years (from September 1983 to June 1991), with the courts ultimately guaranteeing the publisher's right to publish them.^[200][201] Thus, the requirement for tenders for new contracts and the legal problems with LTB caused the suspension of the publication of the 1984–84/85 and 1985 edition directories.^{[202][203][204]}

Editions 85/86 and 1986–86/87 In compliance with the new regulation, the invitation-letter system was used for the tenders, but only for publishers registered with Telebrás.^{[205][206][207]} The telephone directories were reorganized into 14 regions: List 130 was suppressed, and Lists 115, 150 and 160 were split, giving rise to Lists 155-Jundiaí and region, 145-Rio Claro and region and 165-Marília and region. In addition, the tertiary areas of Jaú, Avaré and Botucatu ceased to be covered by List 170 and were integrated into List 160. In January 1984, Telesp began the tender process for the São Paulo/Guarulhos directories,^[208] and in August 1984 OESP Gráfica was contracted.^[209] Execution of the contract, with a five-year term, was suspended due to legal measures filed by the Editora de Guias LTB.^[210][127] The delay in publishing new directories led those then in circulation, compiled in 1982 and distributed in 1983, to an out-of-dateness that reached 70%. In order to find a solution, still under the terms of the new regulation, Telesp requested and obtained from the Ministry of Communications permission to contract the same publisher, for one year, to print the directories, which were to be distributed in mid-1985. But in November 1984 the process was again halted by legal measures.^[127][211] Recognizing the seriousness of the problem generated and seeking to minimize losses for users, in January 1985 the Ministry of Communications authorized Telesp to contract OESP Gráfica to publish the São Paulo/Guarulhos directories.^[212] LTB filed a new lawsuit, but in June 1985 Telesp obtained a favorable opinion given definitively by the courts.^[213][214] Meanwhile, users in these cities suffered from the lack of updated directories until the situation was normalized, with delivery of the Subscribers List, 1986 edition^[215][216] in December 1985^[217][218] and of the Classified List, 86/87 edition^[219][220] in July 1986,^[221] marking the end of a directory out-of-dateness that had already lasted three years.^[222] Regarding the interior, in December 1984 several publishers were contracted on an emergency basis, for a period of one year, for the publication of the 85/86 and 1986 edition directories of 11 regions.^{[206][223][224]} Thus, the promise of distribution of directories in the regions of Campinas^[225] (OESP Gráfica); São José dos Campos^[226] (ABC LISTEL); Bauru (ECTB-Editora de Catálogos Telefônicos do Brasil); Santos,^[227] Rio Claro, Piracicaba^[228][229] and Jundiaí (LTP-Listas Telefônicas Paulista); Osasco, Marília, Sorocaba and Araraquara^[230] (LTN-Lista Telefônica Nacional) was fulfilled. The interior directories began to be distributed in July 1985.^{[231][232][222]} For printing the São Paulo/Guarulhos, Osasco and Campinas directories, a data transfer system to the publishers via magnetic files was implemented. With the implementation of this system, the subscriber complaint rate fell to 0.2%.^[129] Another novelty implemented on an experimental basis by Telesp in May 1986 was the electronic telephone directory service on videotext.^[233]

Editions 1987–87/88 and 1988–88/89 In June 1986, the legal problems regarding the São Paulo/Guarulhos directories were resolved once and for all, and the following telephone directories were contracted for a period of five years:^[234][235]

• OESP:^[236] 100-São Paulo Assinantes,^{[237][238][239]} 105-São Paulo Classificada,^[240][241] 107-Guarulhos^[242][243]

At the end of 1985, negotiations with publishers for the publication of new editions for the interior were concluded,^[222] and during 1986, for a period of four years, the following telephone directories were contracted:^[129]

• LTP:^[244] 131-Santos e região,^[245][246] 145-Rio Claro e região,^[247] 150-Piracicaba e região,^[248][249] 155-Jundiaí e região,^[250] 160-Bauru e região, 165-Marília e região
• LTN:^[251] 115-Osasco e região,^[252] 170-Sorocaba e região,^[253] 185-Araraquara e região
• ABC LISTEL:^[244] 135-São José dos Campos e região,^{[254][255][256]} 140-Campinas e região^[257][258]

For printing the Sorocaba, Piracicaba, Santos, São José dos Campos, Araraquara and Marília directories, the data transfer system to publishers via magnetic files began to be used.^[129] And for the 88/89 edition, List 131 was split and suppressed, giving rise to Lists 132-Santos e região and 133-Registro e região.^[259] Still in 1986, publication of the 87/88 edition directories for the regions of Presidente Prudente and São José do Rio Preto was contracted on an emergency basis for a period of one year,^[260] and then in 1987, for a period of four years, the following telephone directories were contracted:

• LTN:^[251] 175-Araçatuba e região, 176-Presidente Prudente e região, 180-São José do Rio Preto e região,^[261] 181-Votuporanga e região^[261]

Editions 1989–89/90 to 1995–95/96

Once again, the directories were reorganized: for the 1989 edition, List 105 was divided, giving rise to Lists 104-São Paulo Classificada Consumidor and 105-São Paulo Classificada Empresa, and List 135 was split and suppressed, giving rise to Lists 136-Litoral Norte, 137-Alto Vale do Paraíba and 138-Vale do Paraíba e Região Serrana. There was also a change in the roster of publishers: LISTEL incorporated LTP in October 1988 and considerably expanded its coverage in the state, and from the 1989 edition onward began publishing that publisher's directories,^[262][263] and in 1994 LTN came to be called EPIL – Editora Pesquisa e Indústria.

Editions 1996–96/97 to 1999 There was still one last reorganization in the directories: for the 1996 edition, Lists 115, 170 and 180 were split, giving rise to Lists 124-Barueri, São Roque e região, 125-Cotia, Itapecerica da Serra e região, 173-Região Sul Paulista and 182-Barretos, Bebedouro, Catanduva e região, and for the 1997 edition List 100 was divided, giving rise to Lists 100-São Paulo Assinantes Empresariais and 102-São Paulo Assinantes Residenciais. Finally, Telesp's telephone directories reached the internet in July 1997,^[264] and the 1999 edition was the last to be published by Telesp,^[265] with the 2000 edition already published by Telefônica.

Addresses

The first official Telesp address directory for the city of São Paulo was the 80/82 edition,^{[266][267][268]} published by LTB, since the last edition had been published in 1972,^[269] when the capital was still served by CTB, and its publication was then discontinued due to high production costs. LTB also published the 82/84 edition,^[270][173] when the directory was discontinued again. It returned to being published from the 88/89 edition onward,^[271][175] this time by OESP Gráfica, and from then on São Paulo's address directory came to be published regularly every two years.^[272] In the interior, address directories were published together with subscriber and classified directories. From the 85/86 edition onward, they began to be published separately and only for the main cities, as determined by the regulation.^[177] But there were exceptions, such as List 107-Guarulhos, which brought together in the same volume the subscriber, address and classified directories. The directories 130-Santos,^[273] 134-São José dos Campos, 141-Campinas, 151-Piracicaba, 152-Limeira, 153-Americana, 154-Santa Bárbara d'Oeste,^[274] 156-Jundiaí,^[275] among others, were published.

Expansion plans and shares

In the Brazilian government's policy of expanding the telephone system, users advanced financial resources to fund it, through the self-financing scheme for telephone lines, adopted in 1967 and which was unique worldwide. Thus, the user received shares of the company concessionaire for the public telecommunications service; that is, they were not only acquiring the line, but also becoming a shareholder of the company.^[276]

This was the expansion process for telephone companies: they increased capital by issuing shares that were bought by those interested in having a telephone. Then, the money was used to expand the telephone network and install the purchased lines. Between the sale of the expansion plan and the installation of the line, the process could take two years or more.

Those who purchased expansion plans from January 1973 to December 1974 and from January 1996 to June 1997 became shareholders of Telesp, while those who purchased expansion plans from January 1975 to December 1995 became shareholders of Telebras.^[276]

Only those who bought telephones via expansion plans had the right to shares. Those who bought the line from third parties, which was very common at the time, did not receive the shares; what was transferred was only the right to use the line, because the shares were not associated with the telephone line number but instead assigned to the first holder based on the registration number of the expansion plan carried out directly through Telesp's self-financing system, which held identifying data for the prospective subscriber. Thus, users who sold their lines remained shareholders, and they could also sell their shares, which happened very frequently.

This form of financing was abolished on 30 June 1997, under Ordinance No. 261 of 30 April 1997 of the Ministry of Communications, but subscribers who received shares and did not sell them remained shareholders of other companies after the reorganization that occurred in the system. Those who were shareholders of Telesp also received shares of Telesp Celular, since the company underwent a demerger. Those who were shareholders of Telebras also received shares of the new companies after its demerger, such as Telesp and Embratel. Since 1998, new changes occurred, and those who were still shareholders of Telebras in May of that year also became shareholders of Telefônica Brasil, Oi, Embratel, TIM and others.^[277]

Installed telephones

One-million-telephone plan: As soon as it began operations, Telesp's first action was to continue the one-million-telephone plan (P1M) approved by the Ministry of Communications and started by Companhia Telefônica Brasileira in October 1971,^[278] in which 375,000 telephone terminals were intended for the capital^[279] and 175,000 intended for the interior,^[280] to be installed by 1976. Of this total, CTB had already contracted 240,000 telephone terminals and Telesp completed in 1973 the contracting that exhausted the share of this plan allocated to the state of São Paulo; the milestone of one million telephones in service was reached in 1975.^{[281][282][283]} In the overall planning of this expansion, in addition to the capital, two cities of great economic importance in its service area stood out:

• Campinas – with 28,610 terminals in 1973, a further 40,800 terminals were contracted: 10,200 for station "31" (Cidade), 10,200 for station "41" (Castelo), 5,100 for station "42" (Castelo), 10,200 for station "51" (Cambuí) and 5,100 for station "52" (Cambuí); and the 8,400 terminals of station "9" (Cidade) were replaced, which was deactivated

• Santos – with 28,400 terminals in 1973, a further 44,000 terminals were contracted,^[284] of which 10,200 for station "32" and 10,200 for station "33" (both at the Washington Luís exchange),^[285][286] 10,200 for station "34" and 10,200 for station "35" (also at the Washington Luís exchange),^[287][288] and the 8,400 terminals of station "2" (Brás Cubas) were replaced, which was deactivated^{[289][290][291]} From then on, Telesp established its own expansion plans.^[292] Additional plan: An emergency action initiated in July 1973 which, unlike the expansion plans, first consisted of implementing automatic telephone exchanges in localities defined as priorities by Telesp; then, shortly after the completion of the exchange-implementation works, the telephone lines were marketed and installed.^[293] Two-million-telephone plan: The high levels of development of the state's growth at the time indicated the need to begin executing new plans aimed at reaching the target set in the agreement signed in October 1973 between Telesp and COTESP through the State Telecommunications Master Plan, under which by 1980 the average number of telephones in the state should be 12 per 100 inhabitants and cities with more than 10,000 inhabitants should be interconnected to the DDD system. In this agreement, the two-million-telephone plan (P2M) was announced, made official in January 1974,^[294][295] with the milestone of two million telephones in service reached in 1978.^[296][297] Later expansions: From then on, registrations for expansion plans began to be opened continuously, with Telesp signing contracts every year with the main suppliers of telephone equipment.^{[298][299][300]} Thus, in 1982 the milestone of three million telephones in service was reached,^[301][302] and in 1986 the milestone of four million telephones in service was reached.^[303]

Community telephone plan: In November 1990, the Ministry of Infrastructure regulated the Community Telephone Program (PCT), under which Telebrás subsidiaries were authorized to transfer to private companies the task of expanding telephone networks, making them responsible for marketing and installing telephones with a maximum period of 18 months. As a result, telephones became more widespread and more affordable.^[304][305] While there was an expansion of 97,900 terminals in 1990^[306] and 241,200 terminals in 1991,^[307] when these companies began implementing the PCTs for Telesp, 334,000 terminals were installed in 1992. In 1993, 236,000 terminals were installed and in 1994 there were 221,000 terminals, totaling about 4.2 million telephone terminals installed and about 3.9 million telephone terminals in service.^[308]

Final expansions: In 1995, the number of installed telephone terminals was 4.5 million, with 4.2 million telephone terminals in service, and in 1996 the number of installed terminals was 4.9 million, with 4.6 million terminals in service.^[309] In 1997, the number of installed terminals reached 5.4 million, with a digitization rate of 55% of the installed base; 94% of installed terminals were in service, reaching 5 million. Of these terminals, 67% were residential (3.4 million), 20% non-residential (1 million), 10% trunks (500,000) and 3% public-use terminals (150,000). The number of terminals per 100 inhabitants (teledensity) that year was 16.64.^[310][311]

Main cities in Telesp's operating area (except the capital):

Manual exchanges

Most cities that had telephone systems were served by manual exchanges with switchboards operated by telephone operators. Telesp continued implementing manual exchanges in municipal seats only until 1979 and on an emergency basis. The last cities to have telephone systems implemented through manual exchanges were:

• Adolfo, Flora Rica,^[321] Guarani d'Oeste, Itapura, Lagoinha, Mendonça, Mirassolândia, Sagres, São João das Duas Pontes and Sebastianópolis do Sul (1975)^[107]
• Barra do Turvo,^[322] Estrela do Norte, Gabriel Monteiro, Narandiba, Palmares Paulista, Sandovalina, Santa Clara d'Oeste, Tarabai and União Paulista^[322] (1976)^[323]
• Pontes Gestal, Rubinéia and São Francisco (1977)^[324]
• Mariápolis, Marinópolis, Nova Guataporanga, Paulicéia, Pedranópolis, Pinhalzinho, Platina, Santa Mercedes, Santana da Ponte Pensa and São João do Pau d'Alho (1978)^[325]
• Pedra Bela (1979)

Because they were obsolete, manual exchanges were gradually replaced by Telesp with automatic exchanges until 1985, when the automation of telephone exchanges in all municipal seats in its coverage area was completed. However, manual exchanges continued to be installed in districts in the 1980s, including in some that became emancipated in the 1990s, such as Nova Castilho^[326] and São João de Iracema.^[327]

Automatic exchanges

Capital

In April 1973, Telecomunicações de São Paulo (TELESP) was created. The following month, CTB transferred its entire holdings in the state to this company.^[328]

When it came to be served by Telesp, the city of São Paulo was served by 48 automatic exchanges installed in 24 telephone exchange buildings. Soon after, the first contract was signed to expand the capital's telephone network,^[329][330] and Telesp had already begun a new expansion plan.^[331]

Upon taking over operations, Telesp already inaugurated the new telephone exchanges of the one million telephones plan (P1M): Campo Belo (exchange "241"),^[332] Guarani (exchange "271"), Paraíso (exchange "289"), Penha (exchange "296") and Pinheiros (exchange "210").^{[333][334][335]}

Telesp continued, without interruption, the ongoing works begun by CTB: the telephone exchange building Guarani (inaugurated in 1973) and the planned telephone exchange buildings Jaguaré, Tremembé and Vila Gustavo (inaugurated between 1977 and 1978).^[336]

The city of Guarulhos was integrated into the São Paulo area in 1974, and therefore its telephone exchanges began to follow the capital's numbering sequence. However, the DDD system was only installed in the city in 1975, after completion of the works on the new telephone exchange.^[337]

During this period, Telesp made an area cutover at the Benjamin Constant center and deactivated exchange "33" to improve telephone traffic in this critical area of the capital.^[338] Another area with many problems that were resolved was the Jardins center, where exchanges "80" and "81" were replaced by exchanges "852" and "853" respectively; exchange "81" was switched off and dismantled, and exchange "80" was reused and reactivated in 1977 as exchange "64".^[339][340]

Through its own planning, it inaugurated new telephone exchange buildings, the first being Parelheiros (inaugurated in 1978)^[341] and Ceagesp (inaugurated in 1981),^[342] It also expanded the buildings of the telephone exchange buildings inaugurated by CTB between 1968 and 1970, and built annex buildings to older telephone exchange buildings (Benjamin Constant, Brás, Campo Belo, Guarulhos, Ipiranga, Jardins, Palmeiras, Perdizes and Vila Mariana),^[343][344] always using crossbar exchanges as equipment.^{[345][346][347][348][349]}

In 1979 the city of Osasco was integrated into the São Paulo area.^[350] The new telephone exchange building was inaugurated in 1977 (exchange "478"),^[351] and was changed to exchange "801" when the integration occurred, at the same time that the second telephone exchange (exchange "802") was inaugurated,^[352] thereafter following the capital's numbering sequence until 1986, when there was a new change in prefixes.^[353]

CPA exchanges

In December 1977, the country's first digital telephone exchange was inaugurated on an experimental basis (the so-called CPA – centrais controladas por programa armazenado). PRX-series equipment (Philips) was used, and the exchange was installed in Vila Mariana (prefix "544").^[354][355]

But it was another digital technology, the AXE-10 series (Ericsson), that was deployed definitively, with the first exchange also inaugurated in Vila Mariana (prefix "572") in April 1982,^[356][357] gradually beginning the deployment of digital exchanges in São Paulo.^{[358][359][360]}

In the same year, two more CPAs were inaugurated: in the Guarani telephone exchange building (prefix "918") in September 1982,^[358] and Lapa (prefix "832") in December 1982,^[361][358] and the following year six more CPAs were inaugurated, in the Jabaquara telephone exchange building (prefix "579") in March 1983,^[362] Ipiranga (prefix "914") in May 1983,^[362] Casa Verde (prefix "858") and Penha (prefix "941") in November 1983,^[363] Campo Belo (prefix "533") and Osasco (prefix "803") in December 1983.^[363]

In 1984 the telephone exchange buildings Americanópolis, Campo Limpo, Cumbica, Ibirapuera,^[364] Jaraguá, Morumbi, São Mateus and Vila Esperança were inaugurated with only digital exchanges. By that year, 26 CPAs with around 200,000 terminals had already been installed in the capital area.^[365]

In the following years, the telephone exchange buildings Anhanguera and Nova Parelheiros (1985), Freguesia do Ó (1986), Anchieta, Guarapiranga and Vila Prudente (1987), Dutra (1988), Cidade Vargas and Itaim Bibi (1989) were inaugurated.

The "áreas mudas" in the municipality still persisted for some years after Telecomunicações de São Paulo (TELESP) took over operations. Parelheiros only began to have telephone service in 1978 (1,000 terminals with the 9 thousand-group of prefix "246", changed to "520" in 1979),^[341][366] Jaraguá in 1984 (4,000 digital terminals with prefix "841") and Nova Parelheiros in 1985 (1,000 terminals with the 8 thousand-group of prefix "520").

By the end of the 1980s, there were 45 telephone exchange buildings installed in the city of São Paulo:

More information Telephone exchange building, Telephone exchange ...

Telephone exchange building	Telephone exchange
	CTB (step-by-step)	CTB (crossbar)	Telesp (crossbar)	Telesp (digital exchanges)
Americanópolis				562 (1984) [367] 565 (1986) 563 (1989)
Anchieta				946 (1987) 947 (1987)
Anhangabaú		227 (1969) 228 (1970) [334]	229 (1976) 230 (1980)
Anhanguera				834 (1985)
Benjamin Constant (1º prédio) [368]	32 (1929) 34 (1939) 36 (1946) 35 (1951) 37 (1953)	239 (1967)
Brás (1º prédio) [369][370]	93 (1944) 92 (1961)	292 (1970)
Brás (2º prédio)			291 (1976) 264 (1978) [371] 948 (1983) [372]
Campo Belo (1º prédio)	61 (1953)	240 (1967) [373] 241 (1973) [332][336] [b]
Campo Belo (2º prédio)			543 (1975) [374] 542 (1976) 531 (1978) [341][371] 532 (1979) [347]	533 (1983) [363] 530 (1985) [375] 535 (1987)
Campo Limpo				511 (1984) [367] 512 (1987)
Casa Verde		266 (1969) [376][336]	265 (1976) 857 (1979) [372]	858 (1983) [372][377] 856 (1987)
Ceagesp (deactivated)			859 (1981) [342]
Cidade Vargas				588 (1989)
Consolação		256 (1969) 257 (1970) [332][336]	258 (1975) [374] 259 (1976) [374] 231 (1978) [371] 255 (1979) [378] 234 (1980) 235 (1980)
Dutra				967 (1988)
Ermelino Matarazzo		206 (1970) [376][336] [379]		943 (1984) [367]
Freguesia do Ó				875 (1986) 876 (1988)
Guaianases		207 (1970) [336][379]
Guarani		271 (1973) [376][336] [b]	216 (1978) [371]	918 (1982) [358] 910 (1984) [380]
Guarapiranga				514 (1987)
GRU – Guarulhos (2º prédio)			209 (1974) [337][381] 208 (1979) [382] 913 (1982) [349]	940 (1984) [383] 964 (1987)
GRU – Cumbica				912 (1984) [362] 945 (1985)
Ibirapuera				884 (1984) [380] 885 (1986) 887 (1986)
Ipiranga (1º prédio)	63 (1955)	273 (1969) 274 (1969) [376][334]
Ipiranga (2º prédio)			272 (1976) 215 (1978) [371]	914 (1983) [362]
Itaim Bibi				820 (1989) 829 (1989)
Itaquera		205 (1970) [376][336] [379]		944 (1984) [380]
Jabaquara		275 (1968) 276 (1969) [336]	577 (1976) [384] 578 (1979) [385][386]	579 (1983) [362] 581 (1986)
Jaguaré			268 (1977) [387] 869 (1978) [371][388]	819 (1988)
Jaraguá				841 (1984) [362]
Jardins (1º prédio)	64 (1977) [389] [c]	282 (1967)
Jardins (2º prédio)			280 (1976) [390] 852 (1976) [391][d] 853 (1976) [391][d] 881 (1976) [339] 883 (1980) [392][347]
Lapa		260 (1968) [332]	261 (1975) [374][384] 831 (1978) [341][371]	832 (1982) [393] 833 (1988)
Liberdade		278 (1969) 279 (1970)	270 (1976) [334][371] 254 (1983)	277 (1984) [362]
Morumbi			843 (1984)	842 (1986) 844 (1986)
Nova Parelheiros			520-8 (1985)
OSS – Osasco (2º prédio)			701 (1977) [394] 702 (1979) [352][394]	703 (1983) [363][394] 704 (1985) [394] 705 (1988)
Palmeiras (1º prédio)	66 (1928) [395] 67 (1948) [395]
Palmeiras (2º prédio)			825 (1975) [374] 826 (1976) [374]
Paraíso		287 (1969) 288 (1969) 289 (1973) [376][336] [b]	285 (1975) [374] 284 (1976) [371] 283 (1979) [396] 251 (1980) 252 (1980) 286 (1980)
Parelheiros			520-1 (1978) [366][371]
Penha		295 (1968) 296 (1973) [376] [b]	294 (1976) [384] 293 (1978) [371] 217 (1979) [397][398]	941 (1983) [363]
Perdizes (1º prédio)	62 (1956) 65 (1960)	262 (1967) [332][336]
Perdizes (2º prédio)			263 (1975) [374] 864 (1978) [341][371]	872 (1984) [367][375] 874 (1986) 871 (1988)
Pinheiros		211 (1969) [373] 210 (1973) [376][336] [b]	212 (1976) [399] 813 (1978) [341][371] 814 (1979) [378] 815 (1979) [347]
Santa Ifigênia		220 (1968) 221 (1969) [376][336]	222 (1976) [374] 223 (1976) [374]
Santana		298 (1968) 299 (1969) [376][334]	290 (1976) [374] 267 (1978) [371]	950 (1984) 959 (1987)
Santo Amaro		247 (1969) [373] 246 (1973) [336]	548 (1976) [371] 521 (1978) [371] 522 (1979) [400] 523 (1979) [347] 545 (1979) [392][347]	524 (1984) [367]
São Mateus				919 (1984) [380] 962 (1987)
São Miguel Paulista		297 (1970) [336][401] [392][372]		956 (1987)
Tremembé			203 (1977) 204 (1979) [347][372]	952 (1988)
Vila Esperança				957 (1984) 958 (1986)
Vila Gustavo			201 (1978) [371] 202 (1979) [347]	949 (1984) [367] 951 (1988)
Vila Mariana (1º prédio)	570 (1951) [402] 571 (1951) [402]
Vila Mariana (2º prédio)			549 (1976) [384]	544 (1977) [354] 572 (1982) [357] 575 (1984) [380] 574 (1989)
Vila Prudente				965 (1987) 966 (1989)

Close

Interior

Medium- and large-scale exchanges:

Telephone exchange in Piracicaba.

Telephone exchange in Assis.

Telephone exchange in Araras.

Telephone exchange in Sumaré.

In interior cities that already had automatic exchanges, they were step-by-step, rotary, and crossbar types, from various manufacturers (Automatic Electric, Ericsson, Standard Elétrica and Plessey).^[403][404] As the need to expand terminals arose, step-by-step and rotary exchanges were replaced by crossbar exchanges. In cities that already had crossbar exchanges, the number of terminals could be increased without needing to change the equipment. Of the oldest automatic exchanges installed by CTB, only a few were kept, such as Araraquara, Bauru, Campinas, Rio Claro^[405] and Santos (Brás Cubas and Tocantins),^[406] as well as some exchanges in networks administered by CTB such as Jundiaí,^{[407][408][409]} Piracicaba,^[410][411] São João da Boa Vista^{[412][413][414]} and Votuporanga. The automatic exchanges inaugurated by CTB between 1970 and 1972 and that were part of the first expansion plan were kept, some of which had their buildings expanded or replaced:^[415]

• Avaré (replaced), Barra Bonita,^[416] Botucatu, Bragança Paulista,^[417] Cruzeiro, Garça, Itapetininga (replaced),^[418] Itapeva, Itapira, Itatiba, Itu,^[419] Jaboticabal, Lençóis Paulista, Mococa, Mogi Guaçu (replaced), Mogi Mirim (expanded),^[420][421] Penápolis, Piedade, Promissão, Santos–Washington Luís^[406][422] and Tatuí^[418]

As for the other automatic exchanges installed by CTB and its administered networks, they were replaced by larger buildings and new equipment, such as the exchanges in Assis, Araçatuba, Guaratinguetá,^[423][424] Guarujá,^[425] Guarulhos,^[426][416] Jacareí, Marília, Presidente Prudente, São José do Rio Preto,^[427][428] São José dos Campos^[429][430] and Sorocaba.^[431][432]

Of the automatic exchanges installed by COTESP, some were also kept, such as Ilhabela, Ilha Solteira, Paraibuna, Santa Branca, São Sebastião and Ubatuba.^[433][434] In an agreement signed in 1973, for COTESP fell the portion relating to building construction, power supply, engineering, and supervision of new telephone exchanges, which were installed in special buildings of brutalist architecture, of which the architect Ruy Ohtake, one of the most highly regarded in Brazil, produced two designs (Campos do Jordão^[435] and Ibiúna^[436]), while Telesp took charge of installing and activating the telephone equipment.

Thus the exchanges in Andradina, Caçapava and Campos do Jordão were activated by COTESP, and the others by Telesp, with the exchanges in Angatuba, Auriflama, Capão Bonito, Itararé, Nhandeara, Pereira Barreto, Peruíbe^[437][438] and Registro^[439] replacing provisional automatic exchanges installed by COTESP, and the exchanges in Cachoeira Paulista,^[440] Caraguatatuba,^[441] Cardoso, Ibiúna^[442] and Piquete replacing manual exchanges. The automatic exchanges received by Telesp from the private companies that were incorporated were, for the most part, replaced by larger buildings, receiving new automatic equipment, such as the exchanges of Americana,^[443] Araras, Catanduva, Cotia,^[444] Cubatão,^{[445][446][447]} Granja Viana,^[444] Limeira, Osasco,^[25][448] Ourinhos,^[449] Praia Grande,^[450] Santa Bárbara d'Oeste,^[451] São Carlos (inaugurated in January 1980 already with the DDD system by Governor Paulo Maluf, with the inauguration act being a direct call to President Figueiredo in Brasília),^[452] São Vicente^[453] and Sumaré. Only the buildings that allowed expansion of telephone equipment were retained.

The first automatic exchanges inaugurated by Telesp were those that were part of the first expansion plan and also of CTB's one-million-telephone plan, and which had been planned by that company: Amparo, Indaiatuba, Paulínia, Ibitinga, Matão, Taquaritinga and Lorena (May 1973),^[454][455] Salto, São Roque and Sertãozinho (July 1973),^[421] Porto Feliz and São Manuel (August 1973),^[427] Laranjal Paulista and Birigui (October 1973),^[456][457] Poá and Carapicuíba (1973).^[458][459]

The others planned by CTB were inaugurated together with the new exchanges planned by Telesp, in which various types of standard buildings were used, including the PTC-1, of only a single floor:^{[460][461][462]}

• Pirajuí (January 1974)^[463], Barretos and Franco da Rocha^[464] (March 1974),^[465] Monte Aprazível, Teodoro Sampaio and Tremembé (September 1974),^[361] José Bonifácio and Tanabi (November 1974),^[466] Ferraz de Vasconcelos and Itaquaquecetuba^[464] (1974)
• Caieiras, Cosmópolis, Guariba^[467] and Tietê (1975)
• Capivari, Fernandópolis, Mairiporã,^[468] Quiririm^[418] and Sousas (1976)
• Adamantina, Águas de Lindóia, Agudos, Bebedouro,^[469] Bernardino de Campos, Cafelândia, Campo Limpo Paulista, Cerquilho, Dois Córregos, Duartina, Fartura, Itapevi,^[444] Jandira,^[464] Olímpia, Pederneiras, Piraju, Pirapozinho, Presidente Venceslau, Rancharia and Vera Cruz (1977)
• Barão Geraldo, Bariri, Cândido Mota, Cravinhos, Francisco Morato, Guararapes, Itapecerica da Serra, Itápolis, Junqueirópolis, Mairinque, Nova Odessa, Novo Horizonte, Palmital, Paraguaçu Paulista, Pedreira, Presidente Epitácio, Santa Cruz do Rio Pardo, Santa Rosa de Viterbo, São Pedro, Socorro and Taquarituba (1978)
• Bertioga,^[470] Lucélia, Mongaguá,^[471] Monte Azul Paulista^[472] and Tupi Paulista (1979)
• Alphaville,^[473][474] Bastos, Embu-Guaçu,^[443] Jaguariúna^[475] and Parque Petrópolis (1980)

The main types of crossbar exchanges deployed were: ARF-102 (Ericsson), ESK-10000 (Siemens), NC-400 (NEC), PC-1000 (Standard Elétrica) and 5005 (Plessey).^[476] In 1983, the first CPA outside the capital is inaugurated, in Osasco (prefix "803").^[477] CPAs began to replace crossbar exchanges, although some cities retained the obsolete step-by-step exchanges until they were replaced by CPAs. The main types of digital exchanges deployed were: AXE-10 (Ericsson), EWSD (Equitel / Siemens), NEAX-61 (NEC), 5ESS (AT&T) and TRÓPICO-RA (Promon – current Trópico).^[478]

Small exchanges

Before being incorporated, COTESP deployed in 1974 small automatic exchanges in cities that had not yet been transferred to Telesp. They were decadic exchanges of the UD type (Philips-Inbelsa), installed in a prefabricated standard modular-construction building,^[479] whose main characteristics were low cost and ease of short-term installation, providing a quick solution to communication problems in areas of low population density:^[480][481]

• Cananéia, Clementina,^[482] Eldorado, Estrela d'Oeste, Gastão Vidigal, General Salgado, Getulina, Indiaporã, Iporanga, Itariri, Juquitiba, Macaubal, Meridiano, Miracatu, Pedro de Toledo, Populina, Ribeira, Salto de Pirapora, Santa Rita d'Oeste and Sud Mennucci

The deployment of small automatic exchanges in the cities included in the additional plan is considered Telesp's first achievement. Most were installed in a standard building of the PLAD type, characterized by having a very simple masonry structure.^[334] At the same time, the exchanges of cities that were already part of CTB's expansion plan began to be deployed.^[460]

The first inaugurated were: Américo Brasiliense (July 1973),^[483][482] Águas da Prata, Cerqueira César, Corumbataí, Icém, Itobi, Ribeirão Bonito, Rincão and Santa Gertrudes (October 1973),^[456] Cândido Rodrigues, Dobrada, Palestina and Santa Lúcia (January 1974).^[463]

They were deployed through 1977:^[461][462]

• Ajapi, Analândia, Bom Jesus dos Perdões,^[482] Canas, Herculândia, Itapuí, Maracaí, Nazaré Paulista,^[484] Oriente, Quintana,^[482] Roseira, Santana de Parnaíba, Severínia^[485] and Várzea Paulista (March 1974)^[465]
• Avaí, Cajobi,^[485] Charqueada, Fernando Prestes, Guaraçaí,^[484] Guaraci, Ibirá, Itirapina, Neves Paulista, Potirendaba,^[485] Pradópolis, Serra Azul, Serrana, Silveiras and Tabapuã (September 1974)^[361]
• Altair, Avanhandava, Cabrália Paulista, Cedral^[485] and Lavrinhas (November 1974)^[466]
• Barrinha, Cesário Lange,^[485] Pereiras,^[486] Santa Maria da Serra and São José da Bela Vista (1974)
• Areias,^[487] Cabreúva,^[487] Guaíçara, Guararema, Ibaté, Jaborandi, Jarinu, Manduri, Maristela,^[467] Mineiros do Tietê, Monte Alegre do Sul, Oscar Bressane,^[487] Pitangueiras,^[467] São José do Barreiro,^[487] São Simão^[467] and Torrinha (1975)
• Alfredo Marcondes, Boituva,^[487] Elias Fausto, Ipeúna,^[487][482] Jeriquara, Joanópolis, Pardinho,^[487] Rafard, Santo Expedito,^[487] Taiúva, Terra Roxa and Uchôa (1976)
• Iperó, João Ramalho,^[487] Jordanésia, Lindóia, Morungaba,^[487] Pirapora do Bom Jesus, Queiroz and Redenção da Serra (1977)

Also between 1976 and 1977, UDK-type automatic exchanges (Philips-Inbelsa) were deployed, most installed in a prefabricated standard modular-construction building:^[488]

• Águas de Santa Bárbara, Campos Novos Paulista and Monte Castelo (1976)^[489]
• Alvinlândia, Américo de Campos, Apiaí, Aparecida d'Oeste, Barão de Antonina, Biritiba Mirim, Bofete,^[482] Braúna, Caiabu, Capela do Alto, Colina, Coronel Macedo, Cosmorama, Cunha, Floreal, Guareí,^[482] Guzolândia, Iacanga,^[482] Igaratá, Iguape, Itaberá, Itaí, Jaci, Jambeiro, Júlio Mesquita, Macatuba, Macedônia, Mombuca, Monteiro Lobato,^[482] Murutinga do Sul, Natividade da Serra, Panorama, Paranapuã, Poloni,^[490] Pongaí, Reginópolis, Ribeirão Branco, Riversul, Sabino, Salmourão, Santo Antônio do Pinhal, São Bento do Sapucaí, São Lourenço da Serra,^[485] São Pedro do Turvo, Sarapuí^[482] and Tapiraí (1977)^[489]
• Dolcinópolis, Guaimbê, Lupércio, Magda, Mira Estrela, Ouro Verde^[482] and Timburi (1977)

Between 1978 and 1984, the small exchanges deployed were installed in a new type of standard building, with a masonry structure:

• Águas de São Pedro,^[487] Araçoiaba da Serra, Artur Nogueira, Buritama,^[491] Ipaussu, Pontal, Porangaba,^[486] Queluz, Santo Antônio de Posse and Valparaíso (1978)
• Anhumas,^[492][484] Ariranha, Bady Bassitt,^[490] Bálsamo,^[424][490] Bilac,^[484] Bocaina, Brotas, Conchal, Dumont, Florínea,^[492] Guapiaçu, Guarani d'Oeste, Hortolândia,^[493] Ibirarema, Igarapava,^[494] Itajobi, Itatinga, Itirapuã, Juquiá,^[495] Luís Antônio, Lutécia,^[492][484] Marabá Paulista,^[492] Nova Europa, Nova Veneza,^[424] Palmeira d'Oeste, Patrocínio Paulista, Pedregulho, Pirangi, Rifaina, Santa Adélia,^[484] Tabatinga, Taciba,^[496] Taguaí,^[492][486] Valentim Gentil^[497][490] and Viradouro (1979)
• Cajati,^[495][498] Campos de Mairiporã, Conchas, Jacupiranga,^[495] Jardim Cinco Lagos, Pacaembu, Parque Suísso, Pedro Barros and Terra Preta (1980)^{[332][499][500][501][502][503]}
• Borborema, Cordeirópolis,^[504] Ilha Comprida, Paraíso,^[496][485] Paranapanema, Pindorama and Santo Antônio do Jardim^[475] (1980)
• Álvares Machado, Areiópolis, Barbosa, Castilho,^[505] Chavantes, Coroados, Cristais Paulista, Echaporã, Gália, Glicério, Guarantã, Iacri, Irapuã, Irapuru, Massaguaçu,^[484] Nova Aliança, Parapuã, Pedra Bela, Pilar do Sul, Piratininga, Porto Cubatão, Quatá, Regente Feijó, Rinópolis, Rosana, Samaritá, Santa Albertina, Urânia and Urupês (1981)^{[332][499][501][502][503][506]}
• Álvares Florence, Anhembi, Boa Esperança do Sul, Dourado,^[498] Indiana, Itupeva, Mendonça, Nova Granada, Orindiúva, Paulo de Faria, Piracaia, Santa Cruz da Conceição, Santa Ernestina and São Sebastião da Grama (1981)
• Bento de Abreu, Cruzália, Euclides da Cunha, Flórida Paulista, Gavião Peixoto, Ibitiúva, Inúbia Paulista, Itaporanga, Lagoinha, Lavínia, Luiziânia, Palmares Paulista, Pedrinhas, Piacatu, Planalto, Pontes Gestal, Praia da Lagoinha, Riolândia, Sales, Santópolis do Aguapeí, Sarutaiá, Taiaçu, Tapiratiba, Taquaral and Vista Alegre do Alto (1982)^{[332][499][500][501][502][503][506]}
• Adolfo, Álvaro de Carvalho, Arealva, Boracéia, Divinolândia, Mariápolis, Nova Guataporanga,^[507] Paulicéia, Pinhalzinho, Porto Primavera, Praia do Juqueí,^[508] Presidente Alves, Salto Grande,^[486] Santa Mercedes, São João do Pau d'Alho, São Luiz do Paraitinga^[482] and Ubirajara (1982)
• Restinga and Três Fronteiras (1983)
• Catiguá, Piquerobi, Polvilho^[509] and Ribeirão do Sul (1984)

In 1985, automatic exchanges were deployed in the last 38 cities that were still served by manual exchanges, installed in a standard building of the PTC-600 type:

• Alto Alegre, Balbinos, Barra do Turvo, Borá, Caiuá, Estrela do Norte, Flora Rica, Gabriel Monteiro, Itaju, Itapura, Lucianópolis, Marinópolis, Mirassolândia, Monções, Narandiba, Nipoã, Nova Independência, Nova Luzitânia, Ocauçu, Óleo, Onda Verde, Pedranópolis, Platina, Rubiácea, Rubinéia, Sagres, Sandovalina, Santa Clara d'Oeste, Santana da Ponte Pensa, São Francisco, São João das Duas Pontes, Sebastianópolis do Sul, Tarabai, Tejupá, Turiúba, Turmalina, União Paulista and Uru

From the late 1980s, the small digital exchanges of the TRÓPICO-R series (Promon and PHT) and CPR (Equitel) began to be deployed; they were modular and installed in transportable containers.^{[485][486][484][490][498]}

More information Year, Cities with automatic exchanges ...

Automation of telephone exchanges

Year	Cities with automatic exchanges	Cities with manual exchanges	Cities without telephone systems
1973	145	317	66
1974[e]	215	262	51
1975	233	257	38
1976[f]	257	244	28
1977	332	184	13
1978	363	164	2
1979	400	129	–
1980[g]	412	118	–
1981	450	80	–
1982	487	43	–
1983	489	41	–
1984	492	38	–
1985	530	–	–
1988[h]	531	–	–
1989[i]	532	–	–

Close

Buildings

Telesp used several types of standard buildings, which were designed for the sole purpose of housing telephone exchanges, according to their size:^[510]

• For the larger exchanges, various types of masonry buildings were used, such as the standard buildings PTC1, PTC2, PTC4, 10KT, 20KT, 40KT, 50KT, 80KT, etc.^{[511][512][513][514][515]}
• For smaller exchanges, containers were used, as well as modular or masonry buildings, such as the standard buildings PLAD, PTC, PTRI, 4KT, etc.

The telephone exchange buildings are still used today by Vivo, but they are real-estate assets subject to reversion (reversible assets).^{[516][517][518]}

Area cuts

As the telecommunications plant expanded, the capacity for expanding telephone exchanges was exhausted in the areas of highest telephone demand, making it necessary to build new exchanges to serve the growing number of users.

Thus, when a new telephone exchange was built within the service area of a single existing one, the customers who were farthest from the old exchange and closest to the new one were reassigned to it, freeing up terminals for new customers near the old exchange and increasing service capacity within the area.

This reassignment of telephone terminals from one telephone exchange to another was called an area cut. When the cuts occurred, the telephones reassigned to the new exchange had their prefix and the thousands digit(s) of the number changed.

In the capital, given its enormous demand for telephones, area cuts were frequent. In the other cities, before Telesp was created, they had only been carried out in Santos. Most of the area cuts were made in the 1990s, due to the major telephone expansion that took place, with hundreds of new exchanges being inaugurated to meet existing demand for telephones.

List of the first area cuts in the main cities served by Telesp (except the capital):

• Santos – with no possibility of expanding the city's first automatic exchange, CTB inaugurated the Tocantins exchange in 1948 and later inaugurated the Washington Luís exchange in 1971,^[519] to which the telephones from the two older exchanges were later reassigned.^[406] Telesp carried out new area cuts,^{[520][521][522][523]} with the inauguration of the José Menino and Ponta da Praia exchanges in 1977,^[524][525] and Areia Branca in 1982^[526][527]
• Campinas – the city where Telesp made the first area cuts in the interior, with the inauguration of the Cambuí and Castelo exchanges in 1976,^{[528][529][441]} and Campos Elíseos in 1984^[530]
• Bauru – inauguration of the Altos da Cidade exchange in 1977^{[531][532][533]}

• Jundiaí – inauguration of the Vila Arens exchanges in 1982,^{[534][535][536]} and Vila Industrial in 1989
• Guarulhos – inauguration of the Cumbica exchange in 1984
• São José dos Campos – inauguration of the Jardim Satélite exchanges in 1984, and Tatetuba in 1988
• Araraquara – inauguration of the Fonte Luminosa exchange in 1984^[537][538]

• Barueri – the cut was made in the area of the Alphaville exchange, with the inauguration of the Barueri exchange in 1984
• Itu – inauguration of the Tiradentes exchange in 1984
• Piracicaba – inauguration of the Vila Resende exchange in 1987
• Carapicuíba – inauguration of the Vila Dirce exchange in 1988
• Sorocaba – inauguration of the Cerrado exchange in 1989^{[539][540][541]}

• São José do Rio Preto – inauguration of the Maceno and Redentora exchanges in 1991^[542]
• Americana – inauguration of the Praia Azul and Praia dos Namorados exchanges in 1991
• Santa Bárbara d'Oeste – inauguration of the Jardim Esmeralda exchange in 1995^[543][544]

In other important cities such as Araçatuba, Jacareí, Marília, Osasco, Presidente Prudente, Rio Claro, São Carlos, São Vicente and Taubaté all the area cuts were made in the 1990s.

Of the main cities served by Telesp, only in Limeira were there no area cuts, due to the large capacity of the telephone exchange building.

Some cities had more than one telephone exchange, but these were not area cuts; rather, they were service to regions that did not have telephone systems, such as the Hortolândia^[493] and Nova Veneza^[424] exchanges in Sumaré.

There were also cities that already had more than one exchange installed by the previous operator in areas that lacked service, and these were replaced by Telesp with new exchanges, such as the Granja Viana exchange^[444] in Cotia, the Enseada^[545] and Vicente de Carvalho^[546][547] exchanges in Guarujá,^[548] and the Cidade Ocian,^[549][550] Solemar^[551] and Vila Caiçara,^[376] exchanges in Praia Grande.

There was also an area cut in the case of cities that shared the telephone exchange of a nearby city for technical convenience, as in the case of Barueri, which shared the exchange of Carapicuíba until an area cut was made, with the inauguration of the Alphaville telephone exchange in 1980,^[552] as well as Igaraçu do Tietê, which shared the exchange of Barra Bonita until 1988, and Vargem Grande Paulista, which shared the exchange of Cotia until 1989.

Rural cooperatives

After the pioneering initiative of the Cooperativa Rural de Telecomunicações de Mogi das Cruzes (operating area of the Companhia Telefônica da Borda do Campo), when two rural automatic telephone exchanges were inaugurated in 1975, the way was opened for rural telecommunications cooperatives to emerge across the state with the same initiative to solve the communications problem among their members through the implementation of rural telephony systems.^[553][554]

The projects were designed and executed by the Department of Water and Electric Energy (DAEE) in partnership with Telesp,^[555][556] and in total 17 rural cooperatives benefited.^[557]

Telesp began to assume operation of these systems from the late 1970s,^[558] most in 1981 (8 exchanges) and 1982 (15 exchanges), until in 1985 the Plano Diretor de Telecomunicações Rurais was launched for work in the area.^[222]

Among the rural telephone exchanges installed, the one in the former rural nucleus of Holambra stands out, which at the time belonged to the municipalities of Jaguariúna and Artur Nogueira, and which in 1993 became a municipality.

Tertiary and tariff areas

The Ministry of Communications created the National Telephony Plan, which was approved and began to be implemented in 1972. Under it, the states would be divided into Operational Districts, whose objective, among others, was to facilitate control and calls.^[594]

In each of these districts there would be at least one Transit Exchange, which would allow national calls through the direct distance dialing (DDD) system. Also, in each Operational District the most important cities in the region would be connected to the Transit Exchanges, forming a link between them.^[594]

The operational districts were composed of one or more tertiary areas, which are a set of cities grouped in a closed numbering region, and each of them corresponds to a national code in the DDD system.^[595][596]

The division of the state into tertiary areas was carried out for operational purposes, aiming at a specific numbering plan for each area. The numbering of the area codes (DDD) followed the Ministry of Communications' National Telephone Numbering Plan.^[595]

The formation of each area depended on a series of planning factors, such as telephone traffic interests, the design of an appropriate switching plan, and the system's own economics. The tertiary areas presented two immediate advantages: speed and ease in telephone calls.^[595]

The cities within the same tertiary area integrated the Regional DDD,^[597] where calls between these cities could be made directly without the need to dial the area code before the telephone number.^[598] If the telephone exchange of a city already had a telephone prefix, which constituted the regional code of the city, even if the DDD system had not yet been implemented in that exchange, calls could also be made directly, but only within the regional scope of the tertiary area.^[599]

The intercity area-to-area charging system began to be developed from 1972,^[600] with studies carried out by Telebras together with the integration-holding companies of each state and Embratel,^[601] and being implemented in 1976 by the Ministry of Communications, dividing the states into tariff areas based on the tertiary areas.^[602][603]

The main city of each tariff area is called the area center, being the geodetic reference for the others for calculating long-distance intercity call charges. In the cities within the same tariff area, which integrated the Regional DDD, intercity calls between them had a lower cost.^[598]

The tariffing system underwent several updates, which included modifications related to geographic coordinates, harmonization of the numbering of tariff areas with the national telephone numbering plan, creation of new areas, merger of some areas, change of area-center localities, and relocation of a locality from one tariff area to another:^[604][605]

• the tariff areas of Cotia (133), Jundiaí (134), and Mogi das Cruzes (136) were integrated into the tariff area of São Paulo (11) in 1978, following the numbering plan that had already adopted the DDD code (011) for these areas, but the respective tertiary areas continued to exist^[606]
• the tertiary area of Registro was changed from (158) to (138) in 1979, following the numbering plan that had adopted the DDD code (0138) for the area^[607]
• Auriflama was part of the Jales area (176), but with the implementation of DDD in 1978 it became part of the Votuporanga area (174)
• Itariri and Pedro de Toledo were part of the Registro area (138), but with the implementation of incoming DDD in 1979 they became part of the Santos area (132)^[608]
• Juquitiba was part of the Registro area (138), but with the implementation of DDD in 1981 it became part of the Cotia area with DDD code (011)
• Salesópolis was part of the São José dos Campos area (123), but in the 1990s it became part of the Mogi das Cruzes area with the DDD code changed to (011)
• Fronteira was part of the São José do Rio Preto area (172), but in the 1990s it became part of the Frutal area (344)

The tertiary areas of Ribeirão Preto (166)^[j] and Franca (167)^[k] had their DDD code changed to (016), and the São Joaquim da Barra area (168) had the DDD code implemented as (016), but despite the same DDD code the tertiary areas continued to be distinct.

In the Mogi das Cruzes (11) and São Joaquim da Barra (168) areas, Telesp did not operate in any municipality. In the São Paulo (11), Ribeirão Preto (166), Franca (167), and Barretos (173) areas, Telesp operated in part of the municipalities.

And although the DDD code (0176) was implemented in some cities of Mato Grosso do Sul, they were not part of the Jales area (176) but rather the Paranaíba (176-A) and Cassilândia (675-A) areas.

Telephone integration of Greater São Paulo

Telephone integration of the Greater São Paulo began in 1958 when, for intercity communications with the capital, CTBC introduced the automatic direct dialing system via coaxial cables, without assistance from operators, connecting the ABC cities to the IU station of the capital, located in the Edifício Sete de Abril. This was a system similar to the one used from Santos to São Paulo, inaugurated in the same year by CTB.^[609][610] At first, direct calls could only be made directly from the ABC to the capital, because in the reverse direction operator assistance was still needed, via code (07).^[610]

The ABC localities were part of "line 4": São Caetano do Sul ("42"), Rudge Ramos ("42-7"), São Bernardo do Campo ("43"), Santo André ("44"), Diadema ("45"), Santa Terezinha ("46"), Mauá ("46-0"), and Ribeirão Pires ("46-7"). Also part of "line 4" were Osasco ("48") and Guarulhos ("49").^[611] The prefixes of the telephone exchanges of "line 4" between 1972 and 1973 were replaced by three-digit prefixes, where an additional digit 4 was added at the beginning of each prefix, except in Guarulhos, standardizing with the system already being adopted in the capital.^[612] It was the cities of "line 4" that constituted the São Paulo tertiary area (11), and consequently, in the implementation of the direct distance dialing (DDD) system they were the first to receive the area code (011) after the capital. Around the São Paulo tertiary area, the tertiary areas of Santos (132), Cotia (133), Jundiaí (134), and Mogi das Cruzes (136) were created.^[602] With the exception of the Santos tertiary area, which received the area code (0132), all the cities of the Cotia, Jundiaí, and Mogi das Cruzes tertiary areas received the area code (011) in the process of implementing the DDD system, following the National Telephone Numbering Plan, considerably increasing the number of cities in "line 4",^[613] aiming at telephone integration of the region.^[614]

Another problem to be solved was the number of operators working in Greater São Paulo.^[615] In order to rationalize the use of the intercity system and accelerate operational integration in Greater São Paulo, telephone operation in the region would be divided between CTB and CTBC. By federal decrees in 1969 the city of Suzano had its concession transferred to CTBC,^[616] and in 1970 the cities of Poá, Carapicuíba, Pirapora de Bom Jesus, Santana de Parnaíba, Jandira, Itapevi, Barueri, and Itapecerica da Serra were placed under CTB's concession.^[617] In 1973, CTB's concessions were transferred to Telesp,^[618] a holding company in the state that incorporated the other operators. From 1974 the process began of transferring the cities of the Mogi das Cruzes tertiary area under Telesp's concession to CTBC administration,^[619] while Mogi das Cruzes began to be served by CTBC in 1975.^[620] The cities of the Cotia and Jundiaí tertiary areas remained under Telesp's operation. In 1974 the city of Guarulhos was integrated into São Paulo's urban network. Thus its calls to the capital became direct, without operator assistance, and considered local, not intercity like the other cities of "line 4"; therefore its telephone exchanges began to follow the capital's numbering sequence.^[621][622] The same happened with Osasco, which ceased to be part of "line 4" in 1979 and was integrated into São Paulo's urban network.^[25] The main forms of intercity communication were as follows:^[623][624]

• the capital's IU exchange, in the Edifício Sete de Abril, was connected by coaxial cables to the Tucuruvi repeater station, making connection with all of Brazil through Embratel's microwave trunks
• the ABC region, via the São Caetano do Sul transit exchange,^[625] and the Santos area were connected to the capital's IU exchange and to each other by coaxial cables
• the city of Suzano was connected to the São Caetano do Sul transit exchange by microwave^[626]
• the city of Guarulhos and the Mogi das Cruzes area were connected to the capital's IU exchange and to each other by coaxial cables
• the Jundiaí area was connected to the Tucuruvi repeater station by microwave, via the Serra do Japi repeater station
• the Campinas area was connected to the Tucuruvi repeater station by microwave, via the Cabreúva repeater station
• the capital's IU exchange was connected by coaxial cables to the terminal station installed on the terrace of the Edifício Copan^[627][628]
• the Cotia area was connected to the Osasco transit exchange by coaxial cables, which was connected to the Copan terminal station by microwave^[628]
• the Santos area was connected to the Copan terminal station by microwave, via the Paranapiacaba repeater station^[628]

The cities were integrated into the DDD system in the following years:^[312][314]

• 1969 – only incoming DDD was implemented in São Paulo
• 1970/1971 – outgoing DDD was implemented in São Paulo, with an official inauguration in July 1970 broadcast live to the country by TV Tupi^[629]

• 1973 – Diadema, Mauá, Ribeirão Pires, Rio Grande da Serra, Rudge Ramos, and Suzano (February),^[630] Santo André (June),^[631][632] Osasco (July),^[633] São Bernardo do Campo and São Caetano do Sul (October)^[634]