The current VoIP deployment consists of Cisco System’s AVVID technology. This converged technology includes the use of three distributed, physically redundant Cisco CallManager Servers. CallManager operates as a single cluster and provides a current capacity of approximately 20,000 devices. UFIT Telecommunications has also deployed Cisco’s Unity server for voice mail features. A unified communications offering that integrates voice mail and email will be provided as a future service. Each core PoP location has vlans for IP Telephony. The voice vlans are secured using access lists defined on each core PoP.
Access to the public telephone network is provided using two physically redundant Cisco ISR 3925 VoIP gateways, and two SIP CUBEs. The Gateways connect to ATT SmartRing via PRI circuits and the CUBE's connect to Level3 SIP trunks.