Cisco Systems VC-825 appendix Configuring E&M Voice Ports, VC-839

Cisco Hoot and Holler over IP

Configuration Tasks

	Command	Purpose
Step 4
	Router(config-dial-peer)# session target	Assigns the session target for voice multicasting
		dial peers. This is a multicast address in the range
		of from 224.0.1.0 to 239.255.255.255 and must be
		the same for all ports in a session.
		The audio RTP port is an even number in the range
		of from 16384 to 32767 and must also be the same
		for all ports in a session. An odd-numbered port
		(UDP port number + 1) is used for the RTCP traffic
		for that session.
Step 5
	Router(config-dial-peer)# ip precedence number	(Optional) Specifies the IP precedence.
Step 6
	Router(config-dial-peer)# codec	Configures the codec. You must configure the same
		codec on all dial peers in a session.
		When the default codec g729r8 is used, it does not
		appear in the configuration when the show
		running-configcommand is used.

Configuring E&M Voice Ports

To configure E&M voice ports, use the following commands beginning in global configuration mode:

	Command	Purpose
Step 1
	Router(config)# voice class permanent tag	Defines voice class for transmit-receive mode.
Step 2
	Router(config-class)#signal timing oos timeout	Disables signaling loss detection. (Use the
	seconds disabled	disabled keyword in hoot and holler applications.
		The seconds argument is not used in these
		applications.)
Step 3
	Router(config-class)# signal keepalive number	Specifies the keepalive signaling packet interval.
Step 4
	Router(config-class)# exit	Exits voice-class configuration mode.
Step 5
	Router(config)# voice-port	Enters voice-port configuration mode and selects
	{slot-number/subunit-number/port}	the voice port to configure.
	{slot/port:ds0-group-no}
Step 6
	Router(config-voice-port)# voice-class permanent tag	Assigns a previously configured voice class for a
		Cisco trunk or FRF.11 trunk to a voice port (for the
		port that is allowed to speak).
Step 7
	Router(config-voice-port)# connection {plar tie-line	Ties the voice port to a multicast-session number.
	plar-opx}digits {trunk digits [answer-mode]}	Use the trunk keyword to specify a connection that
		emulates a permanent trunk connection to a PBX.
		The digits argument specifies the destination
		telephone number. Valid entries are any series of
		digits that specify the E.164 telephone number.
Step 8
	Router(config-voice-port)# music-thresholdnumber	(Optional) Sets the music threshold to make
		voice-activated dialing (VAD) less sensitive. The
		number argument is the on-hold music threshold in
		decibels (dB). Valid entries are any integer from
		-70 to -30.
	Cisco IOS Voice, Video, and Fax Configuration Guide

VC-839