09-16-05 10:53 PM
Hi
I'm trying to fax over a WAN link between an H.323 gateway on one side
and a MGCP gateway on the other.
If I send the fax from the H323 side, it completes successfully but if I
send from the MGCP side it fails. I think it's a configuration issue on
the MGCP side since I'm not 100% clear on how it should work.
When I attempt a fax from the MGCP side, the gateways switch to fax
relay mode but the fax machines can't seem to train up correctly and the
call eventually disconnects. The H323 destination gateway shows failure
to train messages in the t30 debug.
The gateway configurations are shown below. I've tried with and without
the ccm-manager fax protocol cisco and mgcp package-capability
fxr-package commands since I'm not sure if they should be enabled or
not.
MGCP Gateway
ccm-manager mgcp
no ccm-manager fax protocol cisco
ccm-manager music-on-hold
ccm-manager config server 192.1.203.21
ccm-manager config
mgcp
mgcp call-agent 192.1.203.21 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 package-capability rtp-package
no mgcp package-capability res-package
mgcp package-capability sst-package
no mgcp package-capability fxr-package
no mgcp timer receive-rtcp
mgcp sdp simple
no mgcp fax t38 ecm
mgcp fax t38 nsf 000000
mgcp fax t38 gateway force
mgcp rtp payload-type g726r16 static
mgcp bind control source-interface FastEthernet0/0.2
mgcp bind media source-interface FastEthernet0/0.2
!
mgcp profile default
!
!
dial-peer voice 1 pots
application mgcpapp
port 1/0:0
H323 Gateway
dial-peer voice 4880 pots
destination-pattern 4880
port 0/0
!
dial-peer voice 4881 voip
destination-pattern .T
no modem passthrough
voice-class codec 1
session target ipv4:192.1.200.21
incoming called-number .
fax-relay ecm disable
fax nsf 000000
fax protocol t38 nse force ls-redundancy 0 hs-redundancy 0 fallback
none
no vad
Any suggestions would be appreciated.
Kris Seraphine
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