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