While you wait for answers, we may have found some information which could help you.
Click here for Unlock Phone HelpHow can I mend my Telstra 12250 cordless phone?
Telstra cordless 6100a Won't make calls?
My cordless phone says Base 1 (Telstra 7100) ?
My caller id is not working?
telstra 6100a with 4 handsets?
How to fix Telstra 8950 answering machine?