Dial 0967401 >>> Hit SIP Gateway (10.27.0.102) >>> Number translates to 7401 >> Reach CUCM >> Route Pattern 7401 with Route List for another 2800 Gateway (10.27.1.102).
Call is coming in fine and hitting the Call manager but I cannot see any activity at the 2nd gateway. I turned on deb voip ccapi inout but the 2nd gateway showed no activity whatsoever. This number is a fax number and the fax machine is attached to a FXS port at 2nd gateway (10.27.1.102). There is no way I can make fax work if the call does not hit the 2nd gateway.
I have verified that the call is definitely hitting the CUCM as I forwarded the number to my mobile and it rang when I dialled the main DDI.
Both gateways can ping Call manager and Call manager can ping both gateways.
What is the topology of this? Is this a SIP-to-SIP CUBE? Or is there an H323 leg? Or is it CUCM-SIP-GW-FXS? It's not clear.
Can you send:
And then get:
debug ccsip all
debug voip ccapi inout
debug h225 asn1 (if you are running h323)
debug vpm sig (if there is an analog line)
debug isdn q931 (if there is a pri)
Collect debugs in the following manner:
Router(config)# service sequence Router(config)# service timestamps debug datetime msec Router(config)# logging buffered 10000000 7 Router(config)# no logging con Router(config)# no logging mon Router(config)# voice iec syslog Router# term len 0 Router# sh logg
For some reason the Fax Gateway was not accessible from the SIP gateway. The Ping was successful but I was not able to telnet. Something in between was blocking the communication. I bypassed Call manager and created a VOIP dialpeer with session protocol sipv2 and pointed it to another IP address of that fax gateway which was accessible. As the other interface was binded to H323, I had to make this dialpeer as SIPv2 and the issue was resolved.
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