ATA:Not able send/receive fax(IP Fax)

Unanswered Question
Aug 16th, 2009


Running CCM 4.1

Central location and branch location connected through WAN link.We are registered ATA at both location to the same CCM. We can able to make a voice call between these two ATA's,but not able send the fax.When we try to send the fax,fax machine displys "communication error".

Help me out!!!


I have this problem too.
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irisrios Fri, 08/21/2009 - 10:26

Set the clocking on the GW:

Please add this command to the GW config in global config mode:

network-clock-select 1 e1 0/0/0

Set the ATA for fax:

Please set these settings on the ATA box:

Audio mode: 0x00150015

Connect mode: 0x90000400

Configuring and Troubleshooting the Cisco ATA 186 with Fax:


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