The BT Duet 20 has a range of features including Call Waiting option, call indicator light, redial and secrecy buttons. It is wall mountable and an ideal small gondola telephone at an affordable price.
We had one before so knew they were good. We wanted a phone that was powered by the phone line so it would still work in a power-cut. Good clear buttons. The ringer could do with being a bit louder but is still perfectly audible. May not be suitable for a large house. Good solid construction.
I have been using this model of phone for some years and found it of excellent design.The new one was only bought to replace the handset which had unfortunately become damaged. I notice that some people are having trouble wall mounting the phone and the solution is quite simple although not immediately obvious from the packaging.The hanger on the base is actually reversible and has to be prised out and turned for wall use.This exposes a small tab onto which the handset hangs.If this is not done the handset will not stay in place resulting in the frustration some users were experiencing.