"Mark" <codvimyst@yahoo.co.uk> wrote in message
news:e7ftd194b8p5vc8vks3tn2noh7r8ta2826@4ax.com...
> Pardon my ignorance....
>
> What is the REN of a typical FXS port on an ATA? Are multiple FXS
> ports (where provided) to allow support for multiple service providers
> (one per port) or to support multiple phones on one service?

The Sipura range (SPA-2000 etc. are typically REN 3 per port, as opposed
to 4 on a BT line.

Re. multiple ports, each is configurable separately in most cases.

> Or perhaps both depending on config??

Not usually, although the Fritz!Box Fon from AVM can be configured to
allow phones connected to both ports to ring simultaneously if a call
comes in on any or all lines connected, including a fixed (analogue or
ISDN) line.

Ivor