[Asterisk-Users] ISDN4Linux + Asterisk and Europe

[Iain Stevenson]

There has been a lot of discussion about ISDN BRI on the list - a search 
will turn up plenty of discussion!

You're right about there being a lot of ISDN cards available that are 
certified for use in Europe.  They fall into two categories - active and 
passive.  Passive cards are cheap and generally operate through ISDN4linux 
and asterisk's chan_modemi4l.  The reported disadvantages of this approach 
are:

- delay during calls
- echo (it's disputed what the cause of it is but it's a bit of a nuisance)
- call tones don't follow PSTN patterns.

The active cards (AVM is the major supplier, I think) are better.  If you 
get one with a CAPI interface then you can use the asterisk chan_capi 
driver.  I haven't any experience of this type of card - maybe someone else 
can provide feedback.

  Iain






--On Monday, June 2, 2003 12:33 am +0200 Piotr Adamiak <apjapj at wp.pl> wrote:

> Hello,
>
> Anyone on this group using / implementing * and hardware certified for
> use in Europe ? I believe that ISDN4Linux cards mostly have telecomm
> certificates, so using them should be safe on the client side. Are there
> any major issues / problems associated with using such cards with * ? I
> am talking about a small / very small office with single - few lines.
>
> All the best,
>
> Piotr Adamiak
>
> --
> I am updating my DNA. 'Microsoft Genome 2.0' says I need to reboot my
> body to continue. I am worried that I may not have enough free
> chromosomes to allow the full installation to complete.
>
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