Hi I’m looking for some help identifying a problem with a set of BT8600 quad phones.
The various sockets around the house are all professionally wired and work with a hard wired phone. The 8600 base unit will only work in the master socket which is in a cupboard upstairs. If I move the base to the nearest extension it works but only to numbers in my exchange. If I try to dial outside my exchange to the next area code it reports a number not known or line fault message.
I have spoken extensively to BT without success.
Further testing with shop brought 5m extension cord.... it works. Change this to a 15m cord and it will no longer phone outside area but seems ok otherwise.
Any ideas would be welcome as this is messing with my head😜