Selsius Systems

Selsius designed an IP PBX system consisting of a line of IP phones, a server-based call control application - the Selsius-CallManager, a line of voice over IP gateways and voice applications including voicemail, an automated attendant console and a softphone.

Selsius Systems, Inc. was organized in July, 1997 as a wholly owned subsidiary of Intecom,^[2] a Dallas-based PBX (Private Branch Exchange) manufacturer, with David C. Tucker as CEO, Richard B. Platt as VP of Engineering and Kevin Brown as VP of Sales and Marketing, as well as numerous other important positions held by the employees of Selsius Systems including John Alexander, Paul Hahn, Dave Corley, Jeff Sanders, and Scott Veibell.

The first commercially available IP phone was the Selsius 30SP.^{[citation needed]} In November, 1997, the company sold five 30SP phones to the TRI lab of Southwestern Bell in San Antonio.

Selsius Systems was borne out of Incite, a division of Intecom, which was a wholly owned subsidiary of Lagardere SCA, a French conglomerate. The Incite team, led by Platt and Tucker, developed and marketed a video PBX. The Incite concept was outlined on a napkin in 1993 and formally organized as a division within Intecom in mid-1994.^{[citation needed]} While Incite's distributed call control software architecture was innovative, the market for a high-end video PBX was not responsive. At Tucker's urging, executives from Intecom and its parent company Matra Communications kept the Incite team together as Selsius was spun out into its own company. Approximately 35 engineers, marketing and sales personnel were part of the original Selsius organization. At the time of the Cisco acquisition, the Selsius team had about 55 employees. From the core call control component of Incite, the Incite Multimedia Manager, grew the Selsius-CallManager, Cisco CallManager, and ultimately Cisco Unified Communications Manager (Unified CM).^{[citation needed]}

Following the acquisition, Platt and Tucker were retained as Cisco executives in the IP Telephony division, directly overseeing the product they helped to create. Nearly all of the original Selsius employees joined the Cisco development organization, except for a few Selsius employees who chose the buy-out rather than continuing on with the product at Cisco. Some original Selsius employees have left Cisco, including Platt and Kevin Brown who, as of 2006, was the CEO of IPcelerate. The CallManager product was still in need of significant work when acquired, often referred to internally within Cisco as "CallManagler" because of its immature feature set.^[3]

The current invocation of the Selsius legacy is Cisco Unified Communications Manager^[4] and the IP phones which still use (among other protocols) the original protocol created by Selsius engineers to facilitate voice over IP, the Skinny Client Control Protocol (SCCP). Analog gateways, which used the Skinny Gateway Control Protocol (SGCP), have since been end-of-lifed by Cisco. Cisco Unified Communications Manager is the call processing component of the Cisco Unified Communications System. As of 2005, Cisco Unified Communications Manager and related communications products are responsible for approximately $1 billion in revenue for Cisco. Pull-through revenue, i.e. revenue generated on other equipment such as switches and routers as a consequence of selling Cisco Unified Communications Manager to Cisco (from enterprise switches, routers and other network infrastructure components) has been estimated by some^{[citation needed]} to be as high as three times the Cisco Unified Communications Manager-related revenue. In its first year of operation, Selsius sold about 3,000 IP phones. In 2006, Cisco sold 3,000 of its IP phones - an extension of the Selsius legacy - every eight hours.^{[citation needed]}