How can I repair my phone?

I have a BT Studio 5500 Plus everything seems to be working fine however when I make a call there is no dial tone, it does ring in, but you cannot hear anyone. Any help would be appreciated.
jimbo49, September 2022


done
Check the battery contacts are nice and clean:

https://forums.moneysavingexpert.com/discussion/3450407/bt-studio-phone-not-working

If it's old. A new set of batteries might be a good idea. NiMh and NiCd don't last indefinitely

Dndjdu, September 2022
link Click here to see other fixes for BT.