Global IP Solutions (GIPS) is now supporting Interoffice Voice Trunking (IVT), which allows enterprises to use their existing TDM or IP-based systems to call other sites within their enterprise. IVT also works with traditional PBXs with the use of a voice gateway.
GIPS’ voice quality technology is applied to both ends of the network
GIPS solutions are compatible with the IP-PBXs from Cisco, 3Com and Avaya as well as any other H.323 compatible PBX, including circuit switched telephone equipment. IVT runs on any Windows 2000 or XP server.
http://www.gipscorp.com
