Problem with communication between analog phones and IP Phone

Unanswered Question
Dec 19th, 2007

Hi all,

I have a CCM 4.1.3 and a Cisco router 2821 as a voice gateway with an EVM-HD-8FXS/DID module which has an EM-HDA-6FXO card; My problem is that when I call the analog phone (8800) connected to the FXS port from an IP Phone (4745) the analog phone rings; but When I call the IP phone from the analog phone, the call doesn't go through.

Please can someone help me?

See my configuration:

voice-port 2/0/0

description Connected to 4800

dial-peer voice 4000 voip

preference 1

destination-pattern 4...

voice-class codec 1

session target ipv4:10.128.32.3

dtmf-relay h245-alphanumeric

!dial-peer voice 4800 pots

preference 1

destination-pattern 8800

port 2/0/1

!

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Paolo Bevilacqua Wed, 12/19/2007 - 10:08

Hi,

try removing voice-class and use "codec g711u" instead under DP 4000.

Hope this helps, please rate post if it does!

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