[Asterisk-Users] Good FXO for UK use.

[Patrick Lidstone (Personal E-mail)]

> Date: Tue, 26 Apr 2005 12:36:26 +0100
> From: "Razza" <rjames31 at btopenworld.com>
> Subject: [Asterisk-Users] Good FXO for UK use.
> To: <asterisk-users at lists.digium.com>
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> Hi all, looking for some advice on a good FXO solution for Asterisk,
> living in the UK brings some issues (as Asterisk and 
> associated hardware
> appears to be geared to the US/Canadian market) such as 
> calling line ID,
> impedance settings and echo cancellation (as a result of the impedance
> issues).
> I originally went down the route of an X100P which after 
> applying the UK
> CLID patch worked fine (good sound levels and quality) except the echo
> issue. I decided then to follow the Sipura SPA-3000 route as this
> theoritically answered all my problems, unfortuntately the 
> sound quality
> is appalling (see - http://voxilla.com/index.php?name=PNphpBB2
> <http://voxilla.com/index.php?name=PNphpBB2&file=viewtopic&t=4
> 74&postday
> s=0&postorder=asc&highlight=3000+quality&start=0>
> &file=viewtopic&t=474&postdays=0&postorder=asc&highlight=3000+
> quality&st
> art=0).
>  
> So I guess the obvious choice would be the TDM400 with FXO daughter
> board, I assume this works with my current zaptel drivers and UK CLID
> patch? Can anyone confirm this works fine in the UK or are there other
> suggestions?

No the TDM400 does not work, it does not detect calling party termination
correctly, so IVR and voicemail do not see the caller hang up on BT lines.
Digium are aware of the problem, but fixing it doesn't seem to be a high
priority, despite the fact that they have been supplied with detailed
technical information regarding BT line behaviour :-(.

FWIW, I find the Sipura 3000 works well for me here in the UK once
configured using their on-line web tool.

Patrick