I have Call Manager 4.2(3)sr4, when I dial international calls i receive fast busy tone, calls that are using other patterns are working fine, when I tried to debug isdn q931, I dont see the call pass to the voice router, while i can see it for other calls.
This can be a problem with the ISDN type that is sent if this is a PRI. CallManager by default will send International calls as type:International. Some providers do not accept calls when they are sent this way. I have had to change the type to UNKNOWN before in order for the telco provider to accept this. Do this on the Gateway config change "Called party IE number type unknown" to 'unknown' instead of 'CallManager', and see if that helps. Don't forget to reset the gateway.
Are you using the same H323 gateway instance within CallManager to route national and international calls? If you can't see any Q931 data for these calls it sounds like they aren't even getting to the gateway, which could be explained by a mistyped IP address in the H323 Gateway defination within CCM.
What about Trace files? Could it be matching a different route pattern of translation pattern which would route it to something other than the H323 gateway? Although that wouldn't explain why it would work with MGCP...
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