[asterisk-users] Unable to dial out over Zap - span 1 got hangup, cause 44

[Matthew Fredrickson]

David Kennedy wrote:
> Hi
> 
> I posted earlier about having issues connecting to Telewest's ISDN,
> only to find out later Telewest had forgotten to turn it on -
> hopefully I'm not having a similar silly problem.
> 
> My PRI span is now up and operational, but when I try to send a call
> out over it, I just get congestion tones. Occasionally, I get about
> one second of ring tones, only for it to cut out and play congestion.
> 
> Here's a bit of output (I've taken out the phone number)
>     -- Executing [s at macro-dialexternal:6]
> Dial("SIP/charlie59-082bc890", "Zap/<my phone number>|3600") in new
> stack
>     -- Requested transfer capability: 0x00 - SPEECH
>     -- Called g0/<my phone number>
>     -- Channel 0/4, span 1 got hangup, cause 44
>     -- Forcing restart of channel 0/4 on span 1 since channel reported in use
>     -- Hungup 'Zap/4-1'
> [Oct 25 17:35:22] NOTICE[20503]: cdr.c:434 ast_cdr_free: CDR on
> channel 'Zap/4-1' not posted
>   == Everyone is busy/congested at this time (1:0/0/1)
> 
> Additionally, once a zap channel has been used like this, it seems to
> end up in stuck in this state:
> PRI Flags: Resetting
> 
> Previously, someone mentioned that the TE110P card installed had a few
> issues and I should be using a TE120P instead - could that be the
> cause?

If your span is up ok, and you are actually getting a valid cause code 
back (as you mentioned) your card should be just fine.  It sounds like 
protocol related problems.  Are you sure you are sending the correct 
digit format out on the line?  PRIs can be very picky about it.  Some 
like the area code, some don't, and a number of other things.  Also, can 
you get an inbound call on the PRI?  That's usually the easiest first 
case to get working.

 From looking at the specs, it looks like 44 is cause "requested channel 
unavailable".  Maybe they haven't unbusied the channels yet or something 
like that.

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