Outside Phone can't be accede to conference.

Answered Question
Nov 25th, 2009
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When i start a ad hoc conference from a ip phone and invite another ip phone to join the meeting, it was no porblem. but when i invite outside pstn phone(like mobile phone) to join the meeting, the invite operation was failed. i had configred Conference Bridge to ip phones and voice gateway.

my call-manager is 6.0.

what another problem with it?

Correct Answer by Jaime Valencia about 7 years 7 months ago

Make sure all phones talk G711 to the SW CFB, most probably the other call leg is not G711.



If this helps, please rate


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Overall Rating: 5 (1 ratings)
chenhao Sat, 06/05/2010 - 02:26
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Sorry for late response,

i had check the codec on Route gateway.

show voice call status

cr1.jisha#sh voice call status
CallID     CID  ccVdb      Port             DSP/Ch  Called #   Codec    Dial-peers
0x92FF     24C0 0x457F23C4 0/2/1            0/1:1  *2886198366 g729r8   100/1021
1 active call found

Yes as you said, it's g729r8. SW CFB can only accept g711?  and how to change the codec of the call which outside to PSTN?

i use this config about codec on router:

voice class codec 100
codec preference 1 g711ulaw
codec preference 2 g729r8

but just apply at voip dial-peer, can't apply to pots dial-peer.


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