Faxing through MGCP

[hwilms]

Hello

We are having issues with faxing through a PRI on a 4506 AGM module, configured MGCP with CCM 3.33. The faxes are (incoming and outgoing) cutting off in mid stream. Any assistance would be great

[Aaron Harrison]

What fax protocol (relay/passthru) do you use?

What gateways are you using for connection to the PSTN/to faxes?

[hwilms]

PRI and FAXES are on cat 4507 with WS-x4604-GW AGM module configured as MGCP. and using passthrough.

Some faxes and modem are also on VG224

ccm-manager fallback-mgcp

ccm-manager redundant-host 10.128.5.3

ccm-manager mgcp

no ccm-manager fax protocol cisco

ccm-manager music-on-hold

ccm-manager config server 10.128.5.3

ccm-manager config

mgcp

mgcp call-agent 10.128.5.4 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 codec g711alaw

mgcp package-capability rtp-package

no mgcp package-capability res-package

mgcp package-capability sst-package

mgcp package-capability pre-package

no mgcp timer receive-rtcp

mgcp sdp simple

no mgcp fax t38 ecm

mgcp fax t38 inhibit

mgcp bind control source-interface GigabitEthernet0/0

mgcp bind media source-interface GigabitEthernet0/0

[ROBERT Clark]

Check to see if you are having slips on your PRI. Fax transmission seem to be very susceptable to timing slips.

hth,

-rob

[hwilms]

Yes, I am seeing slips on both PRI's