asterisk users - Oct 2005 - call to a particular 800 number nevershowsanswered on Zap channel

Watch the output of 'pri debug span 1' on the Asterisk server while
placing the call - bug #4468 (http://bugs.digium.com/view.php?id=4468) might be
relevant.
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com
> [mailto:asterisk-users-bounces@lists.digium.com]On Behalf Of Andy Goss
> Sent: Monday, October 10, 2005 5:58 AM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: RE: [Asterisk-Users] call to a particular 800 number
> nevershowsanswered on Zap channel
> 
> 
> I am still looking to solve this problem, does anyone have any ideas?
> 
> Thanks,
> Andy
> 
> -----Original Message-----
> From: Andy Goss 
> Sent: Friday, October 07, 2005 5:37 PM
> To: 'Asterisk Users Mailing List - Non-Commercial Discussion'
> Subject: RE: [Asterisk-Users] call to a particular 800 number 
> never showsanswered on Zap channel
> 
> Thanks for the reply.  Forgive me for being na?ve, however 
> have jumped in to this asterisk project at work due to some 
> circumstances beyond my control and I don't know a lot about 
> carriers and how this all works.  I am figuring it out, but 
> it's a lot of trial by fire.  
> 
> As far as I know, we only use 1 carrier for our system.  We 
> have a PRI from NuVox and we use 7 channels for our asterisk 
> server.  So, I have a few questions:
> 
> Is asterisk or the carrier causing the disconnect?
> 
> Is IBM (the 800 number I am dialing) not passing the answer 
> supervision or is that a function of the carrier?
> 
> Is there a way to make asterisk not drop the call or to force 
> the answer on this number?  Seems like a hard-PBX would have 
> to be able to handle this type of situation.
> 
> Thanks,
> Andy
> 
> -----Original Message-----
> From: asterisk-users-bounces@lists.digium.com 
> [mailto:asterisk-users-bounces@lists.digium.com] On Behalf Of 
> Garth Summey
> Sent: Friday, October 07, 2005 5:18 PM
> To: Asterisk Users Mailing List - Non-Commercial Discussion
> Subject: Re: [Asterisk-Users] call to a particular 800 number 
> never showsanswered on Zap channel
> 
> This one drove me crazy for a while too.  I found out that some 
> companies don't exactly play fair and don't pass answer 
> supervision on a 
> call until you are actually speaking with a live person.  The 
> person I 
> spoke to about this wasn't sure if that was even legal, but 
> he said it 
> happens quite a bit.  I was lucky in that I use multiple carriers 
> (voipjet and broadvoice), voipjet disconnected the call after 60 
> seconds, but broadvoice did not, so when I find one of those 
> 800 numbers 
> I route it through broadvoice.
> 
> Hope that helps,
> 
> G
> 
> Andy Goss wrote:
> > Whenever we call IBM, the call counter on the phone never 
> starts and in
> > the CLI the zap channel never gets the answered signal from the PRI.
> > See below.
> > 
> >     -- Executing Dial("SIP/5933-645d",
"Zap/g1/18004267378") in new
> > stack
> >     -- Requested transfer capability: 0x00 - SPEECH
> >     -- Called g1/18004267378
> > 
> > At this point, I am in IBM's menu system.  However the call never
> > indicates that it is answered either on the phone or in the 
> CLI.  After
> > 60 seconds, the call disconnects.  
> > 
> >     -- Hungup 'Zap/1-1'
> >   == Spawn extension (main, 18004267378, 1) exited non-zero on
> > 'SIP/5933-7bff'
> >     -- Executing Hangup("SIP/5933-7bff", "") in
new stack
> >   == Spawn extension (main, h, 1) exited non-zero on
'SIP/5933-7bff'
> > 
{clip}