IP Centrex System : Cisco Systems & Sylantro Systems

Cisco Systems
Cisco Systems' CallManager server had been installed by at least three service providers as of mid-2002, to provide IP-Centrex services. Pingtel, one of these competitive service providers, delivers IP-Centrex from CallManager installations in New York City, Philadelphia, and Washington, DC. This service has proved most successful with small businesses that have from 100 to 500 users at a site.

This is a development that we expect will be followed by other service providers, both large and small, as an alternative to the use of more powerful softswitches from the established Centrex manufacturers.

Sylantro Systems
Sylantro Systems sells an application switch that offers hosted PBX and IP-Centrex features to competitive service providers. Sylantro claimed to have sold systems with more than 10,000 user ports within the first year that its system was available.

Tacqua Systems
Tacqua Systems has created its OCX softswitch with class 5 capabilities, specifically so that CLECs can deliver local telecom services with significantly reduced initial and ongoing costs of ownership. Tacqua delivers a kernel of telephony features, while encouraging other software developers to use its intelligent network (IN), application programming interface (API), and SIP interfaces.