asterisk users - Jul 2005 - BT / X100P impedance matching

I understand that the X100P card is matched to a 600 ohm impedance but the 
UK BT phone system is not (I haven't been able to find much information on 
the impedance of the UK system).

Has anyone come up with an easy way to match the impedance between the two 
so the X100P can work in the UK?  Presumably a simple transformer won't do 
the job since it won't pass the DC components?

-- 

  - Steve    XMPP/Jabber: steve@nexusuk.org    Web: http://www.nexusuk.org/

      Servatis a periculum, servatis a maleficum - Whisper, Evanescence

Steve,

The X100P card works ok in UK (I have 3 at the moment). The only problem I 
encountered with it was when I had my SKY box connected to the same line. 
This caused random hangups.

Apart from that the card works ok and the UK callerid patch is fine for 
detecting the BT ids.

I hope this helps


Vassilis


At 13:11 16/07/2005, you wrote:
>I understand that the X100P card is matched to a 600 ohm impedance but the 
>UK BT phone system is not (I haven't been able to find much information
on
>the impedance of the UK system).
>
>Has anyone come up with an easy way to match the impedance between the two 
>so the X100P can work in the UK?  Presumably a simple transformer won't
do
>the job since it won't pass the DC components?
>
>--
>
>  - Steve    XMPP/Jabber: steve@nexusuk.org    Web: http://www.nexusuk.org/
>
>      Servatis a periculum, servatis a maleficum - Whisper, Evanescence
>
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