[Gloucs] VoIP- back to square one.

[Andrew Oakley]

Quentin Wright wrote:
> Glyn Davies wrote:
>> As said in previous posts, the other option is an ATA which is 
> Unfortunately the UK models have RJ11 connectors so you need to get RJ11 
> to BT tails from, say Maplin.

Make sure you get an RJ11->BT adaptor with a "ring capacitor", otherwise 
the ATA will not generate a ring tone. Alternatively if you already have 
a spare stock of ADSL filters, these already have ring capacitors and 
will do the same job.

I'm looking at getting an ATA myself. Currently I am considering the 
Linksys SPA3102 as this has both an FXO and FXS port.

http://tinyurl.com/eaova

The traditional phones are plugged into the FXS port, and the FXO port 
is plugged into the BT socket. This way, the household phones can:

* Receive calls on the normal BT number 01242whatever

* Make 999/112, freephone, operator and other calls of my choice / 
configuration on the normal BT line.

* Make all other calls (national, international, my choice / 
configuration) via SIP/VOIP

Particularly useful is the way that, when the power dies, the Linksys 
SPA3102 automatically connects the FXS port straight through to the FXO 
port, thereby allowing 999 and other calls to be made and received on 
the normal BT line during a power cut.

I *think*. I'm going to buy one after Christmas and have a play. All 
inspired by Chris' talk at GLUG, of course.

-- 
Andrew Oakley