Pingtel, Fonality, TalkSwitch and Switchvox are innovative providers of Session Initiation Protocol (SIP) based IP PBXs. Support for these IP PBXs strengthens CallRex's leadership position in the VoIP call recording market for small and medium businesses.

With hundreds of deployments on SIP-based IP PBXs and softswitches from multiple manufacturers, CallRex supports more SIP-based IP PBXs than any other call recording solution. In addition to Pingtel, Fonality, TalkSwitch, and Switchvox, CallRex supports SIP-based IP PBXs from Cisco, Asterisk, Avaya, Nortel, Mitel, ShoreTel, 3Com, NEC, Siemens, Mitel, Zultys and Vertical, and SIP-based softswitches from BroadSoft, Sylantro and Tekelec.

SIP is growing rapidly as an IP PBX standard. SIP makes it easy for IP PBX resellers to quickly sell and deploy VoIP in businesses of all sizes, enabling small and medium businesses in particular to access a wide variety of previously unaffordable applications such as call recording.

"Telrex is pleased to bring affordable call recording to those businesses that have invested in SIP IP PBXs, including those from Pingtel, Fonality, TalkSwitch and Switchvox," says Robert Kapela, president of Telrex. "For many of these businesses, it is the promise of applications like call recording that makes standards-based IP PBXs so attractive."

CallRex is an advanced packet-based call recording and monitoring software solution for IP PBXs and hosted IP PBXs. For more information on Telrex, please visit www.telrex.com