[cisco-voip] Problems with incoming ISDN call / CME does not process the call -> any clou? q931 debug inside

[Florian Mühl]

Hello,

I really invested a lot of time in this case and do not have any idea what is going on. Probably there is someone who really can help me. Otherwise I am lost :D


I have a cisco uc540 installed with two bri isdn interfaces which is working like a charme. 12 telephones with separate dld, auto attended and so on works well. did range is from 00 to 99.

This week I was advised to install a separate did 33 for incoming faxes. Typically no problem but….

I wanted to configure another did 33 as fax onramp service and I am not able to get any signal to this did. I tried to reconfigure the working did 05 to did 33 and even the could not get any „answer“. I reconfigured from 33 to 05 again and everything works.


I even reloaded the old config with 05 as fax an did a debug isdn q931 and have differnt outputs for unconfigured dids (unconfigured did 33 and unconfigured did 34 are completly different).

There are no dialpeers or extensions with these numbers bit I get different q931 debug output for two unconfigured did.

debug info:



----

q931 debug for unconfigured did 33

025448: Jun 24 13:14:53.225: ISDN BR0/1/0 Q931: RX <- FACILITY pd = 8  callref = N/A
        Facility i = 0x91A1150202D409020124300C300AA1053003020100820103
                Protocol Profile = Remote Operations Protocol
                0xA1150202D409020124300C300AA1053003020100820103
                Component = Invoke component
                        Invoke Id = 54281
                        Operation = AOCECharging Unit
        Called Party Number i = 0xC1, '7879338'
                Plan:ISDN, Type:Subscriber(local)
025449: Jun 24 13:14:53.225: ISDN BR0/1/0 **ERROR**: host_facility_invoke: HOST_FAC_INV: B-channel = D-channel call id 0xFFFF



----

q931 debug for unconfigure did 34

004444: Jun 24 07:21:35.343: ISDN BR0/1/1 Q931: RX <- SETUP pd = 8  callref = 0x01
        Sending Complete
        Bearer Capability i = 0x8090A3
                Standard = CCITT
                Transfer Capability = Speech
                Transfer Mode = Circuit
                Transfer Rate = 64 kbit/s
        Channel ID i = 0x89
                Exclusive, B1
        Progress Ind i = 0x8183 - Origination address is non-ISDN
        Calling Party Number i = 0x2183, '8945244290'
                Plan:ISDN, Type:National
        Called Party Number i = 0xC1, '7879334'
                Plan:ISDN, Type:Subscriber(local)
004445: Jun 24 07:21:35.359: ISDN BR0/1/1 Q931: TX -> CALL_PROC pd = 8  callref = 0x81
        Channel ID i = 0x89
                Exclusive, B1



Why is there any difference in the q931 debug information? Both lines are unconfigured

I am completly clueless.



Thank you very much



Flo


P.S: I even tried to get a Cisco SPA phone to work with did 33 - no way. Configured new did 35 and everything works.
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