I have a router cisco connected via e1 (isdn Qsig) to a pbx siemmens, the problem that i see is when the call is generated through the PBX phone to the ipphone, when the ip phone calls the pbx extension works fine.
The error that i get is:
Cause i = 0x81E41C - Invalid information element contents
And the call drops.
The CCM is an 4.1.3 with SR1 and the E1 is configured via MGCP. i have added the isdn debug q931.
It looks like you are sending a name in the facility message - "Oses Arie". Not sure if that is a name. The PBX does not like that facility message. So, You should find out what that message is. if it is a name, see if calls work when you stop CCM from sending the name.
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