Phone lines, a quantity of sockets, and ringing

[Channel Hopper]

A customer has a BT line and seven hard wired points running off it.

There is a need to add another extension in the annex of the property (for out of hours response by the nanny), but having run a temporary cable, the phone doesn't ring when there is an incoming call.

Is there a socket that amplifies the initial signal to allow the BT system to work beyond their recommended four or five points ?

Thanks in advance

 

[rolfw]

Have a look for ren booster.

 

[PaulR]

If he has a phone device on each (or most) socket then he needs a REN booster. But if he moves the phone around and it's only your temporary extension that won't work then the quality of your temporary phone line is suspect.

If you add up the RENs of all devices connected (they should be on a label underneath each device) and they exceed 4 in total then you need the REN booster.

 

[rolfw]

Ah, I assumed that CH's wiring was going to be OK, unless of course he'd allowed his cat to weld them together.

 

[2cvbloke]

You can also ask BT to increase the gain on the line to boost power to the phones, but to be honest, 7 is a bit much, the average phone these days is about 1.2-1.5 REN, and with the normal max being 4, well, yeah, it's overloaded...

 

[PaulR]

It's not the number of sockets per se but the number of devices attached that ups the REN.

Just a thought - the extra sockets are all slave sockets, not masters?

 

[Channel Hopper]

Excuse me, I have not wired any of the system, this is the customer attempting his own upgrade.

 

[deleted]

well if he has 7 devices at least 4 must be additional phones/!! the rest phone fax/alarm monitoring, what im saying is that if he has 4 phones then better to get wirless phone master 1 socket 4 handsets job done !! or he could ask bt for a tripover line.

 

[PaulR]

If he wired the temporary connection has he done it corectly?

Just how many devices does he have connected?