[asterisk-ss7] VÁ: Understanding libss7 code

[Domjan Attila]

should put in chan_dahdi after ISUP_EVENT_CPG and I think have to parse
and pass this busy attribute to chan_dahdi via event_cpg.
How looks like this kind of CPG?

On Thu, 2008-12-18 at 11:56 -0800, Rana Dhekial wrote:
> I am not sure whether ITU ANSI standrad calls for it. But in real life
> I am having following probelm.
>  
>  
> A SIP phone registered with Asterisk calls a Mobile  subscriber 
>  
> Asterisk  ---------IAM------------>PSTN  ( Mobile subscriber )
>  
> Asterisk <--------ACM--------------PSTN  
>  
> The SIP phone hears the ring back tone
>  
> The Mobile subscriber rejects the call by pressing the release button.
> In this part of the world,  call  does not get forwarded to Mobile
> subscriber's voice mail. Probably incumbennt PLMN does not have voice
> mail service. Instead PSTN sends CPG with user busy.
>  
> Asterisk <----CPG ( with user busy)----PSTN
>  
>  
> The SIP phone keeps hearing the ring back tone for 60-90 seconds and
> finally the PSTN sends RELEASE after 60-90 seconds. 
>  
>  
> Asterisk <------REL-------------------PSTN
>  
> Asterisk --------RLC ----------------->PSTN
>  
>  
> My idea is to cut this 60-90 seconds to 0 by sending REL to PSTN
> immediately after getting the CPG with user busy from PSTN.  I have
> tried talking to PSTN to send RELEASE to Asterisk right after they
> send CPG with user busy but  has been invain. 
>  
> So any help with the code will be appreciated.
>  
> thanks,
>  
> 
> 
> > From: adomjan at tvnet.hu
> > To: asterisk-ss7 at lists.digium.com
> > Date: Thu, 18 Dec 2008 09:02:08 +0100
> > Subject: [asterisk-ss7] VÁ: Understanding libss7 code
> > 
> > The code is very readable, I red the all :)
> > where is in the itu/ansi standard that we have to do it?
> > 
> > -- eredeti üzenet --
> > Tárgy: [asterisk-ss7] Understanding libss7 code
> > Feladó: Rana Dhekial <dhekial at msn.com>
> > Dátum: 2008.12.18. 01:27
> > 
> > 
> > Hi Matthew,
> > 
> > 
> > Can you point me to some documentations to understand the libss7
> source code and how it is linked with Asterisk? I have been struggling
> to modify your code to send ISUP_RELEASE on getting CPG with user busy
> from PSTN but has been successful yet.
> > 
> > thanks,
> > 
> > Rana
> > 
> > 
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