[Asterisk-Users] some EICON Diva 4BRI questions

[David Waugh]

Hello Klaus,

Normally, Diva Server adapters are operated as terminal equipment. In
this case, they derive their timing from the signal received from the
NT, for example PSTN or PBX, and use this derived timing to synchronize
their transmitted signal. If you use the Diva Server adapter as network
termination, it generates the timing from which the terminal equipment
derives its timing and synchronization.

Thus TE=Slave
And NT=Master

I haven't tried spandsp and a V-Series card as the card was not designed
for fax applications. As a result it has never been tested. If you want
to fax with the card then we would recommend a normal Diva Server card.

It would probably work in a pass through scenario as just audio is being
relayed by the card. However, I have not tested this and could not
comment if this will work with a V-BRI card.

Bascially if you are looking to do pure voice, then use a V-Series card.
If you want to do anything more than voice, then use a normal Diva
Server card.

Kind regards
David


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com
[mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Klaus
Darilion
Sent: 21 April 2006 11:04
To: Asterisk Users Mailing List - Non-Commercial Discussion
Cc: Asterisk Users Mailing List - Non-Commercial Discussion
Subject: RE: [Asterisk-Users] some EICON Diva 4BRI questions

On Fri, April 21, 2006 11:45, David Waugh said:
> Hello Klaus,
>
> I will answer your questions In turn:
>
> 1. Do Eicon DIVA (V-)4BRI cards support TE and NT mode?
> Yes they do.
>
> 2. Can the clock (master/slave) be configured independent from the
mode
> (TE/NT)
> No

Thus, what is the limitation?
TE = slave  ?????
NT = master ?????


> 6. Difference between V-4BRI and 4BRI: As far as I understand the 4BRI
> is the better (more expensive) card which also offers FAX on/offramp.
> Nevertheless I can use V-4BRI for faxing when using spandsp. Both
cards
> do support onboard echo cancellation. Are this assumptions correct?
>
> The difference between the Diva Server V-Series and the normal Diva
> Server cards is that you can only use the V-Series for Voice
> applications. You can not fax with a V-Series card. If you try and fax
> with a V-Series card you will get an error.

Using spandsp and V-4BRI does not work?

What about a pass-through scenario:

PSTN <-2xBRI-> Asterisk <-2xBRI-> oldPBX

Does Asterisk with the V-4BRI allows to pass through fax calls (or other
data calls) from the PSTN to the old PBX?


> 2. " ...install the isdn4k-utils-devel package...". What is isdn4k ?
> I'm a little bit confused about what I have to install.
>
> This is just a package that contains the capi.h file that is needed to
> compile the chan_capi-cm driver.

btw: libcapi20-dev on debian ;-)

regards
klaus



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