To use a Cisco 1760 router as a gateway in a IP Telephony setup, refer to the following high level feature set:
Symmetric High Bit Rate Digital Subscriber Line (G.shdsl) WAN Interface Card (WIC)
Survivable Remote Site Telephony (SRST) version 2
Cisco IOS Telephony Service (ITS)
Call Admission Control (CAC) for Voice over IP (VoIP) call
Differentiated Services (DiffServ) for voice signaling traffic
G.728 Code Support
Test Command Language (TCL) scripting for Interactive Voice Response (IVR)
Real Time Streaming Protocol (RTSP) enhanced IVR
T.37 fax store and forward
Session Initiation Protocol (SIP)
Media Gateway Control Protocol (MGCP) 1.0 features
The modem pass through over VoIP 1760 can support up to six analog lines and up to 30 Digital Signal Level 0 (DS0) channels in one box when using G711. For a higher complexity codec, the DS0 overall number goes down to 15.
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