H323 Gateway International calls fails

[adamgibs7]

Hello,

International call fails from one of the PRI port 0/2/0, but national and GSM works fine, cause code (31) need advice from experts on CSC.

Attached are the debug output from the working PRI and non working PRI & configuration.
 

thanks

[Sreekanth Narayanan]

In the non-working case, the call fails with cause 31 which is 

Cause No. 31 - normal. unspecified.
This cause is used to report a normal event only when no other cause in the normal class applies.

Can you take the debug isdn q931 for the successful and failed call and also send them here?

That should give us the answer to the cause of failure.

[adamgibs7]

Here are the attached,

for success isdn call i disconnected on ringing
 

[adamgibs7]

also attached the successful connected call for working PRI

[Sreekanth Narayanan]

For the successful call, once you send the call to the telco, it is being routed by the telco.

Aug  5 08:45:33.771: ISDN Se0/1/0:15 Q931: TX -> SETUP pd = 8  callref = 0x4930 
        Bearer Capability i = 0x8090A3 
                Standard = CCITT 
                Transfer Capability = Speech  
                Transfer Mode = Circuit 
                Transfer Rate = 64 kbit/s 
        Channel ID i = 0xA98387 
                Exclusive, Channel 7 
        Calling Party Number i = 0x0081, '877' 
                Plan:Unknown, Type:Unknown 
        Called Party Number i = 0x80, '24773376' 
                Plan:Unknown, Type:Unknown
Aug  5 08:45:33.807: ISDN Se0/1/0:15 Q931: RX <- SETUP_ACK pd = 8  callref = 0xC930 
        Channel ID i = 0xA98387 
                Exclusive, Channel 7
Aug  5 08:45:34.859: ISDN Se0/1/0:15 Q931: RX <- CALL_PROC pd = 8  callref = 0xC930 
        Progress Ind i = 0x8488 - In-band info or appropriate now available 

The Telco is responding with Call proceeding which means the call is being routed, then an alerting. So they are reaching the number called.

However, in the non-working case, the telco is sending a disconnect. You will need to ask the telco why we are receiving a disconnect from them. Is there some information that we are not sending them?

Do we need to send a different format of digits? Or do we need to change the type of number?

Once they answer those questions or check their side, the problem should get solved.

Aug  5 08:40:43.551: ISDN Se0/2/0:15 Q931: TX -> SETUP pd = 8  callref = 0x491F 
        Bearer Capability i = 0x8090A3 
                Standard = CCITT 
                Transfer Capability = Speech  
                Transfer Mode = Circuit 
                Transfer Rate = 64 kbit/s 
        Channel ID i = 0xA98382 
                Exclusive, Channel 2 
        Calling Party Number i = 0x0081, '080' 
                Plan:Unknown, Type:Unknown 
        Called Party Number i = 0x80, '00912223710485' 
                Plan:Unknown, Type:Unknown
Aug  5 08:40:43.583: ISDN Se0/2/0:15 Q931: RX <- SETUP_ACK pd = 8  callref = 0xC91F 
        Channel ID i = 0xA98382 
                Exclusive, Channel 2
Aug  5 08:40:43.639: ISDN Se0/2/0:15 Q931: RX <- DISCONNECT pd = 8  callref = 0xC91F 
        Cause i = 0x829F - Normal, unspecified 
        Facility i = 0x91A10B02017F0606040087690107 
                Protocol Profile = Remote Operations Protocol 
                0xA10B02017F0606040087690107 
                Component = Invoke component
                         3PTY Request 
        Progress Ind i = 0x8288 - In-band info or appropriate now available 

[adamgibs7]

Dear

you have check  the successful calls that is for national .check the attached logs of sussccesful connected international calls.

calling number 772

called number 00912223710485.

thanks

[Sreekanth Narayanan · Accepted solution]

There is no difference between the working international call and non-working international call. The only difference is that non-working is on 0/2/0 while working is on 0/0/0. We are sending the same information on both the lines but it is not being accepted on 0/2/0.

Please check with the telco on what they are expecting on line 0/2/0 and why they are disconnecting the call with cause 31.

[adamgibs7]

+5 from me too, OK i will check with telco and mark as correct on the post  to know others such problems are from telco.

thanks for all to contributing suggestions.
 

[Sreekanth Narayanan]

Thanks! Glad I could help :)

[islam.kamal]

+5 for Sreekanth . You have to check with your provider how many digits you have to send or share youe configuration with him , after that check that international service enable on the line.

thanks

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[islam.kamal]

Hello

31 cause code means 

Normal, unspecified

Typical scenarios include: •Normal operation

31

Reports a normal event only when no other cause in the normal class applies.

The outgoing call match the outgoing dial-peer 30 without no issues . so as suggested kindly share debug isdn q931 , with failed and success international call .

thanks

please rate all useful information