No ringback and no-way audio

Unanswered Question
Jun 11th, 2009
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CM 6 with MGCP gateway with two PRIs. Calls get completed but no ringback and no audio.

network-clock-participate wic 0

network-clock-participate wic 1

network-clock-select 1 T1 0/0/0

network-clock-select 2 T1 0/1/0

isdn switch-type primary-ni

voice call send-alert

voice rtp send-recv

voice-card 0


dsp services dspfarm

interface Serial0/0/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

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Overall Rating: 4.5 (2 ratings)
kifleak19 Fri, 06/12/2009 - 01:59
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Add the following under dial-peer pots:

progress_ind setup enable 3

progress_ind alert enable 8

progress_ind progress enable 8

dezoconnor Fri, 06/12/2009 - 02:52
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  • Silver, 250 points or more

No need to add the above config as you're using mgcp not h323. Anyway, is there a firewall involved in this setup at all? You could be dropping RTP packets (udp ports 16384-32xxx, sorry can't remember them off the top of my head). Either that or a routing issue. Can you Ping any of your ip phones from your voice gateway?


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