Implementing Cisco Unified Communications Manager, Part 1 (CIPT1) Foundation Learning Guide (Frank Feng's Library) by Josh Finke & Dennis Hartmann

Author:Josh Finke & Dennis Hartmann
Language: eng
Format: epub
Publisher: Cisco Press
Published: 2012-06-13T16:00:00+00:00

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!

voice service voip

sip

bind control source-interface LoopBack0

bind media source-interface LoopBack0

session transport tcp

!

interface LoopBack0

ip address 10.1.1.101 255.255.255.0

!

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Configure Cisco IOS Call Routing on SIP Gateways

The default signaling protocol on VoIP dial peers is H.323. Using the previously discussed voip dial-peer we used for H.323, we would need to change the dial peer configuration to specify SIP signaling. Example 8-11 includes the session protocol sipv2 command, which converts the VoIP dial peer from the default of H.323 to SIP. The dtmf-relay command specifies the use of RFC 2833 in-band DTMF Relay (first priority) and out-of-band DTMF Relay using the SIP Notify method (second priority). The rtp-nte command is confusing, but it indicates that the VoIP dial peer will attempt to first use RFC 2833 as a signaling mechanism and then fall back to out-of-band SIP Notify signaling packets if the primary method was not successful. DTMF Relay parameters are negotiated over Session Description Protocol (SDP).

Example 8-11 DTMF Relay Method Configuration

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