Cass asked ... Replacing full bulb housing unit in Neff oven?    |    Pádraig O Sabhain asked ... How to fix Kenwood Slimline Dishwasher KDW45X20 with a F1 Er?    |    keith asked ... How to reset after battery change?    |    Carol asked ... How to remove roller from lawnmower?    |    Ariana Orellana asked ... Code?    |    Click here to ask your question

how to add a synergy 2150 handset to a Panasonic KX-TG8120E base unit?

I have a Panasonic KX-TG8120E and I want to add an extra handset which is a Synergy 2150.
It should be easy?! How can I make the phone recognise the base unit or the base unit recognise the phone? I have both user manuals but can't work it out. Help!
Nia, November 2013
Please anyone!!

Nia, December 2013
link Click here to see other fixes for Panasonic.