used in conjunction with Asterisk software to create hybrid TDM-VoIP PBX systems. Pingtels SIPxchange, built on the software projects from the non-profit organization SIPfoundry, is another open ...

Pingtel is the main developer behind sipXecs, an open-source IP-PBX platform that is based on Linux. Nortel has acquired key assets of Pingtel from Bluesocket, Burlington, Mass. Financial terms of ...

Open-source VoIP solutions offer the performance ... Since contributing source code for its SIPxchange IP-PBX, CallManager and Softphone software to the open-source movement last spring, Pingtel ...