[asterisk-ss7] ACM/CPG messages

[Matthew Fredrickson]

asterisk at nicox.org wrote:
> Hello Matthew,
> 
> The problem is not solved with this patch, i think its really needed to 
> make an alerting, not only a progress.
> 
> Please change that to be more Standard-compliant.

I have not seen anything with clear definition for what this should be. 
  The only thing that is somewhat useful that I have seen is Q.699.  I 
just updated it again so that we do what Q.699 recommends (if called 
party's status in ACM is set to subscriber free, send ALERTING).  It is 
not a very simple situation though, this may need further tweaking.

Please update libss7 to rev 169 and Asterisk 1.6.0 branch to rev 116798 
to test this latest fix.

Matthew Fredrickson

> 
> Thanks a lot
> 
> Nico
> 
> 
> 
> On Sat, 10 May 2008, Matthew Fredrickson wrote:
> 
>> asterisk at nicox.org wrote:
>>> Hello to everyone,
>>>
>>> We are using libss7 now for a long time, and we have seen a small problem.
>>> If we get a ACM message from the carrier, asterisk says that the call is
>>> Proceeding now, and not Ringing as described in the documentation of the
>>> SS7-stack from Intel(dialogic).
>>>
>>> I changed 2 lines in chan_zap.c to solve this.
>>>
>>> here the diff for asterisk SVN-Version 115577:
>>>
>>> 9646c9646,9647
>>> < 					p->proceeding = 1;
>>> ---
>>>> 					p->alerting = 1;
>>>> 					p->subs[SUB_REAL].needringing = 1;
>>>
>>>
>>>
>>> I hope i did it in the right way, becuase i'm on it to learn c at this
>>> time, really no PRO.
>> I added a patch that I think should fix it in trunk rev 115598 or in
>> 1.6.0 branch rev 115599.  Can you update and confirm that my fix (it was
>> a little different from how you did it) works for you?
>>
>> This has been a problem for a while, for a few other people, so if there
>> is anyone else that has had any issues related to the audio channel not
>> connecting after getting an ACM, please update if you can to confirm
>> whether or not this issue has been resolved.
>>
>> Basically what I did was to queue a progress frame along with the
>> proceeding frame (which we already queued) when we receive an ACM, which
>> should open up the audio channel to anything you are bridged to.
>>
>> Thanks!
>>
>> -- 
>> Matthew Fredrickson
>> Software/Firmware Engineer
>> Digium, Inc.
>>
>> _______________________________________________
>> --Bandwidth and Colocation Provided by http://www.api-digital.com--
>>
>> asterisk-ss7 mailing list
>> To UNSUBSCRIBE or update options visit:
>>   http://lists.digium.com/mailman/listinfo/asterisk-ss7
>>
> 
> _______________________________________________
> --Bandwidth and Colocation Provided by http://www.api-digital.com--
> 
> asterisk-ss7 mailing list
> To UNSUBSCRIBE or update options visit:
>    http://lists.digium.com/mailman/listinfo/asterisk-ss7


-- 
Matthew Fredrickson
Software/Firmware Engineer
Digium, Inc.