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New Member

Fax Issues with ATA and 3640PRI

Need help with Faxing with the ATA188, and the 3640 with NM-HDV-2t1. Have 12.3(11)T code on router and running 4.1.3 CCM.

Hearing funning tones when dailing and saw an article to change audiocodes for ATA. pasted in is my mgcp config.

Help anyone?


mgcp call-agent 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp modem passthrough voip redundancy

mgcp package-capability rtp-package

mgcp package-capability sst-package

no mgcp package-capability fxr-package

mgcp package-capability pre-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

mgcp bind control source-interface FastEthernet0/0.108

mgcp bind media source-interface FastEthernet0/0.108


mgcp profile default


Re: Fax Issues with ATA and 3640PRI

Check for clock slips and other errors on the PRI controller.


New Member

Re: Fax Issues with ATA and 3640PRI

How do I do that troubleshooting?

Are you saying that this config looks sound and that the ATA shouldn't need a configuration change from default?

Re: Fax Issues with ATA and 3640PRI

The config looks good. There should be no change needed on the ATA. Take a look at the following document regarding T1 error events and troubleshooting.

Hope this helps.