We may have found other answers which could help you.
Click here for Help Handsets Phone
Warrenty repair?
My cordless phone says Base 1 (Telstra 7100) ?
Telstra v850a handset reads line in use. Can't get a line?
call waiting feature on telstra v850a cordless telephone?
Telstra 7100A, "Not Registered"?
How can I mend my Telstra 12250 cordless phone?