We may have found other answers which could help you.
Success
Message
BT Telephone extension?
Additional handset/base?
Base not working properly?
BT Synergy 3505 I can't hear them but they can hear me?
How To Straighten A Tangled Corded Telephone?
Bt Duet 700?
BT external connectors?
my phone crackles?
can my BTeasIcom 1000 corded telephone be repaired?
BT DIVERSE X10 ADD HANDSET PROBLEM?
Radio cordless phone?
moving phone supply point?