dialogic was RE: [Asterisk-Users] "Glare" condition - How well does asteriskhandle?

[Storer, Darren]

Hi Tim,

TP> So it _may_ not be a problem for me as NTL is a patchwork
TP> of smaller telcos, my area (Manchester) may be more up to
TP> date.
TP> Anyone know an easy way to tell what I've got ?
TP> (or will I have to ask NTL -aaaagh)

"Pound to a penny" you have ISDN 85. It's been reported via the list
recently that only one NTL region in the UK has ISDN 110 (EuroISDN).

If you are near Manchester and you're amenable, I'd like to ask if you'd
mind me coming down to capture a trace of Asterisk failing with NTL's ISDN
85? (Pretty please etc.) I have a portable(ish) Asterisk server, with PRI,
that I can bring along and the whole thing should take between 30 minutes
and 1 hour to setup. The test can take place any time early or late
(weekend's ok too) to suit you and the needs of your business.

It would be great to move the ISDN 85 problem forward; I've lost access to
the spare ISDN 85 circuit at a local switch site as it now has a production
server on it...

There are a number of features missing from ISDN 85 and some additional
Information Elements that are sent, especially during call setup and tear
down. I'm hoping that a patch to the existing Q.931 stack is all that's
required but without some hard facts to go on it will be difficult to crack.

Regards

Darren
--
Comgate
Telco>Internet<Broadcast
Tel: +44(0)700 COMGATE

-----Original Message-----
From: asterisk-users-admin at lists.digium.com
[mailto:asterisk-users-admin at lists.digium.com]On Behalf Of tim panton
Sent: 27 May 2004 20:59
To: asterisk-users at lists.digium.com
Subject: Re: dialogic was RE: [Asterisk-Users] "Glare" condition - How
well does asteriskhandle?


Steve Underwood wrote:
> Jason Williams wrote:
>
>> At 09:16 27/05/2004 -0500, you wrote:
>>
>>> Maybe the time and effort would be better spent finding out why the
>>> Digium card won't work on the NTL's PRI and either fixing it or
>>> providing the information and testing facility to someone who can.
>>
>>
>>
>>
>> NTL's PRI uses ISDN 85  not q931 so a ne protocol stack would need to
>> be written.
>
>
> I think you means ISDN 85 not EuroISDN.
>
> Good heavens. I thought ISDN 85 died out in about 89. :-)
>
> I don't know where you would get the spec these days, but it shouldn't
> be a lot of work to modify libpri to add another variant of ISDN.
>

I should say that I don't _know_ what NTL are delivering me,
I haven't (yet) tried it with a digium E1 card.

What I do know is :
	1) the dialogic card claims to be running CTR4 on an E1 ISDN PRI
	2) other folks on this list have had difficulty getting digium cards to
talk to NTL.
	3) exactly the same dialogic config works on BT and the Dutch PTT's E1
lines.

So it _may_ not be a problem for me as NTL is a patchwork of smaller
telcos, my area (Manchester) may be more up to date.

Anyone know an easy way to tell what I've got ?
(or will I have to ask NTL -aaaagh)

T.

> Regards,
> Steve



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