Issabel PBX - Unified Communications
VICIdial Contact Center Suite
Unified Communications System - PBX System
Kazoo Live Medium. From Null to a Full Featured PBX on minutes
Enterprise telephony recording and retrieval system
ERP, IP PBX, Accounting, CRM, Time tracking, and etc.
VozBox. Asterisk VoIP PBX.
Cyber-wrt pbx is embedded system in DD-Wrt router