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uk.telecom.voip (UK VOIP) (uk.telecom.voip) Discussion of topics relevant to packet based voice technologies including Voice over IP (VoIP), Fax over IP (FoIP), Voice over Frame Relay (VoFR), Voice over Broadband (VoB) and Voice on the Net (VoN) as well as service providers, hardware and software for use with these technologies. Advertising is not allowed.

ATAs and REN

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Old July 21st 05, 03:01 AM posted to uk.telecom.voip
Ivor Jones
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Posts: 3,969
Default ATAs and REN

"Mark" wrote in message
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.


Old July 22nd 05, 11:23 AM posted to uk.telecom.voip
Andrew Gabriel
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Posts: 15
Default ATAs and REN

In article ,
"Ivor Jones" writes:

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

A BT line is a minimum of 4. Most BT lines will actually be
quite a bit higher, unless you are on a maximum length line
from the exchange.

(Fond memories of taking prototype telephone apparatus up
to Baynard House to get BT to tell us what REN number we
could stick on it... ;-)

Andrew Gabriel

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ATAs and REN Andrew Gabriel uk.telecom.voip (UK VOIP) 1 July 21st 05 06:28 PM
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