[Asterisk-Users] pri release cause code mismatch

[Tirpák Miklós]

Hi!

On 09/14/05 16:51, Johann Steinwendtner wrote:
> Hi !
> 
> Asterisk sends a RELASE COMPLETE with cause code 34. It seems that
> Nortel expects a RELEASE message in this state. The conversion
> is done in the protocol engine of the MSDL.
> Why would you want the cause code 34 to be sent ? Do you need a
> special rerouting on the Nortel side ?

Yes. 34 is required by the Nortel to send the call to an alternative destination.

> Would it be a help if you send a cause 3 ? (RELASE msg)

No, I have already tried with PRI_CAUSE=3: Nortel just playes a tone instead of 
rerouting. It seems to be a DISCONNECT, not RELEASE:

 > Protocol Discriminator: Q.931 (8)  len=9
 > Call Ref: len= 2 (reference 64522/0xFC0A) (Terminator)
 > Message type: DISCONNECT (69)
 > [08 02 81 83]
 > Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0   Location: 
Private network serving the local user (1)
 >                  Ext: 1  Cause: No route to destination (3), class = Normal 
Event (0) ]
     -- Hungup 'Zap/31-1' 


Thanks,
Miklos

> 
> Best regards
> 
> Hans
> 
> Tirpák Miklós schrieb:
> 
>> Hi!
>>
>> My asterisk (1.0.7) is connected to a Nortel pbx with Digium E100P 
>> card, both side are ETSI EuroISDN. I would like to reject an incomming 
>> call with cause code 34, but the Nortel PBX gets the value of 31 
>> instead of 34. It seems to work on the asterisk side:
>>
>> < Protocol Discriminator: Q.931 (8)  len=41
>> < Call Ref: len= 2 (reference 17162/0x430A) (Originator)
>> < Message type: SETUP (5)
>> ...
>>  > Protocol Discriminator: Q.931 (8)  len=9
>>  > Call Ref: len= 2 (reference 49930/0xC30A) (Terminator)
>>  > Message type: RELEASE COMPLETE (90)
>>  > [08 02 81 a2]
>>  > Cause (len= 4) [ Ext: 1  Coding: CCITT (ITU) standard (0) 0: 0   
>> Location: Private network serving the local user (1)
>>  >                  Ext: 1  Cause: Circuit/channel congestion (34), 
>> class = Network Congestion (2) ]
>>
>> My macro looks like:
>> exten => s,1,SetVar(PRI_CAUSE=34)
>> exten => s,2,Hangup
>>
>> According to the debug on Nortel it gets 31 cause code in the release 
>> complete q.931 message. Do you have any idea?
>>
>> Thanks,
>> Miklos
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> 
> 
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