While you wait for answers, we may have found some information which could help you.
Success
Message
My cordless phone says Base 1 (Telstra 7100) ?
Telstra cordless 6100a Won't make calls?
How to fix Telstra 8950 answering machine?
Telstra 7100A, "Not Registered"?
My caller id is not working?
telstra 8950a?
call waiting feature on telstra v850a cordless telephone?
telstra 6100a with 4 handsets?
How can I mend my Telstra 12250 cordless phone?
How can I add a handset to telstra v580a?
Warrenty repair?
Telstra v850a handset reads line in use. Can't get a line?