First PBX vendor with Dual Forking with RCC functionality.
Dual Forking with RCC
Call Server X2105.00W
Signaling Server 5.00.31
Multimedia Communications Manager 220.127.116.11
CS 1000 Series
Communication Server 1000 is a server-based, full-featured IP PBX, providing the benefits of a converged network plus advanced applications and over 750 world-class telephony features. Fully distributed over IP LAN & WAN infrastructure with built-in reliability and survivability, Communication Server 1000 supports business-critical applications, including unified messaging, customer contact center, IVR, wireless VoIP and IP phones.