While you wait for answers, we may have found some information which could help you.
Click here for Telstra 7100a Cordless PhoneHow to fix Telstra 8950 answering machine?
My cordless phone says Base 1 (Telstra 7100) ?
Telstra 7100A, "Not Registered"?
My caller id is not working?
How can I add a handset to telstra v580a?
Telstra v850a handset reads line in use. Can't get a line?