On 17/04/2019 22:21, wrote:
P.s. that reminds me, you need to keep an eye on the REN load on the phone line.

BT phone lines can support a REN of 4.

Simply add up all the individual REN numbers of your telephony devices. If t comes to 4 or more, you will need to fit a REN amplifier between the BT master socket and your telephony patch panel.

REN stands for ringer equivalent number.

Modern phones usually have a pretty low REN anyway, so you should get
away with a fair few. However, just turning off the ringer on some of
the handsets will normally solve any REN problems.

(or better still, fit a cheap PABX!)



--
Cheers,

John.

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