[Asterisk-Users] W&M Wink timings for Nortel

[Dennis Walker]

I had a simular problem receiveing E&M Wink dtmf signals from a MITEL sx200 
digital.  I had a 10% or so problem with astrisk line timing out before all 
the digits were dialed.

I tried all the time outs and even messed with the timing of my MITEL 
switch.

It turned out that the problems was solved by setting the emdigitwait 
variable in zapata.conf.  I set mine to emdigitwait=600 and have had 0% 
dialing timeouts.

This is a fairly new variable setting I think after 1.0.3.  Before this it 
was a constant you would have to modify in chan_zap.c .  If you google for 
asterisk emdigitwait you'll track down more information.

----------
From: 	Eric Wieling[SMTP:eric at fnords.org]
Reply To: 	Asterisk Users Mailing List - Non-Commercial Discussion
Sent: 	Friday, February 18, 2005 6:54 PM
To: 	Asterisk Users Mailing List - Non-Commercial Discussion
Subject: 	Re: [Asterisk-Users] W&M Wink timings for Nortel

Rich Adamson wrote:

> My guess is the asterisk implementation for E&M signaling is probably
> "one" end of that interface, watching the signaling bits and translating
> those into something * can use to terminate the call. However, I'll
> be the first to admit I'm not a programmer and probably wouldn't
> recognize the code even if I seen it. Highly unlikely it is a
> fully-baked E&M emulation, and even higher probability the code can
> not source an E&M call.
>
> Do you know if the incoming DID digits are actually dtmf, or is it
> possible the digits are dial pulse on the E lead? (I'd have to guess
> dial pulse from the looks of those messages.)
>
> Since I have not personally heard of anyone actually using it, I'd have
> to guess that resolving the problem will boil down to writing debug
> code into asterisk, and then writing code that supports your needs.
> Or, change the interface from asterisk to the Nortel to some other
> trunking arrangement.

Calls are working SOME of the time.  The CLEC is sending DTMF, I've
confirmed that.  We can source E&M Wink calls, we cannot receive them
reliability from the CLEC.  I'll be playing with the various timing
options this evening.
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