While you wait for answers, we may have found some information which could help you.
Click here for Phone Not Ringcan my BTeasIcom 1000 corded telephone be repaired?
Instructions Manual Bench Corded Telephone KH 5001?
Binatone 1900?
How can I fix my princess phone, push button 1950s design?
Bt Duet 700?
How can I fix my Binatone 3525 phone?