asterisk users - Feb 2005 - A bit of a survey: What do do if you need more than 4 C.O. lines

Folks,

In light of all the troubles people report when running more than one
TDM400 card in a system, I wouldn't mind hearing what your solution of
choice would be when having to connect 5 or more analog telco circuits
to an Asterisk.

I'll try and compile the answers together and get them into the Wiki, as
I figure this could be useful knowledge for the community.

TIA,

Jim.


--
Jim Van Meggelen
jim@vanmeggelen.ca

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On Fri, 18 Feb 2005 10:21:31 -0500, Jim Van Meggelen <jim@vanmeggelen.ca>
wrote:
> Folks,
> 
> In light of all the troubles people report when running more than one
> TDM400 card in a system, I wouldn't mind hearing what your solution of
> choice would be when having to connect 5 or more analog telco circuits
> to an Asterisk.
> 
> I'll try and compile the answers together and get them into the Wiki,
as
> I figure this could be useful knowledge for the community.
The wiki is great, but this type of question is probably appropriate
for the FAQ section at the Asterisk Documentation Project website as
well :)

Oh, and I *know* you have access to adding FAQ stuff there now, so FAQ away! :D

-- 
Leif Madsen
http://www.leifmadsen.com

Digium tech support recommends going with a t1 card and a
channel bank.  This is by far the simplest, cheapest and cleanest
solution that I know of.


Jon.


On Friday 18 February 2005 09:21 am, Jim Van Meggelen
wrote:
> Folks,
>
> In light of all the troubles people report when running more than one
> TDM400 card in a system, I wouldn't mind hearing what your solution of
> choice would be when having to connect 5 or more analog telco circuits
> to an Asterisk.
>
> I'll try and compile the answers together and get them into the Wiki,
as
> I figure this could be useful knowledge for the community.
>
> TIA,
>
> Jim.
>
>
> --
> Jim Van Meggelen
> jim@vanmeggelen.ca

Well, I appreciate everyone's input, and I'll give the matter some more
thought.

Just so no one stays up at night worrying, this is not a situation I am
facing, it is simply a hypothetical scenario.

As with so many things, there is always a trade-off between economy and
functionality. The Adit 600 and T1 integration is certainly quality, but
I have not been able find an economical way to do this (purchasing used
equipment on eBay is fine for smaller deployments and lab gear, but not
a very sound logistics strategy, and awfully difficult to explain to a
customer).

Again, thanks to everyone for their feedback.

Regards,

Jim.


--
Jim Van Meggelen
jim@vanmeggelen.ca


asterisk-users-bounces@lists.digium.com wrote:
> Folks,
> 
> In light of all the troubles people report when running more
> than one TDM400 card in a system, I wouldn't mind hearing
> what your solution of choice would be when having to connect
> 5 or more analog telco circuits to an Asterisk.
> 
> I'll try and compile the answers together and get them into
> the Wiki, as I figure this could be useful knowledge for the
> community. 
-- 
No virus found in this outgoing message.
Checked by AVG Anti-Virus.
Version: 7.0.300 / Virus Database: 266.1.0 - Release Date: 18/02/2005

I corresponded with Voicetronix around Christmas last year. Jim, there
is a dealer in Ottawa although I got better answers from emails to Aus.

There are two things that they don't do that the Zap cards do:
Distinctive Ring Detection and fax detection.

They went out of their way to say they were "customer driven" and
features get in because customers ask. The gentleman made a claim of
effort to get fax detection to work which sounded like it was a
no-brainer in their code. If it is easy as claimed, I would expect to
see it appear just because I enquired.

I am particularly interested in the Dist Ring Detection however for they
make cheap DID's for low volume like home offices, dedicated voicemail
numbers, etc.

David Cook
> From: "Jim Van Meggelen" <jim@vanmeggelen.ca>
> Subject: RE: [Asterisk-Users] A bit of a survey: What do do	if
> 	youneedmorethan4C.O. lines
> To: "'Asterisk Users Mailing List - Non-Commercial
Discussion'"
> 	<asterisk-users@lists.digium.com>
> Message-ID: <006d01c517cc$756f68d0$6e01a8c0@xp2400>
> Content-Type: text/plain;	charset="windows-1250"
>
> >>> I haven't followed this thread closely but have you looked
into
> the
> >>> Voicetronix OpenSwitch cards?
> >>>
> >>> http://www.voicetronix.com.au/hda.htm
> >>
> >>
> >> I've looked at them, but never heard much about them. Is
anyone
> using
> >> them? Can anyone give a comparison vs. the TDM400?
> >
> > I'm using a Voicetronix OpenLine4, and it works well under
> asterisk.
> > Initially I had some echo problems, but Voicetronix support
> > is excellent and
> > solved them (I've just updated the wiki with the bal# values
> > they gave me).
> >
> > I can't compare it to the TDM400, not having used one, but
> > you can use
> > multiple Voicetronix OpenSwitch 6 and 12 cards in one system
> > without the
> > interrupt problem of the TDM400.
>
> That sounds like the ticket, then.