While you wait for answers, we may have found some information which could help you.
Click here for Where Instruction Manual
How can I add a handset to telstra v580a?
My cordless phone says Base 1 (Telstra 7100) ?
telstra 6100a with 4 handsets?
My caller id is not working?
Telstra cordless 6100a Won't make calls?
call waiting feature on telstra v850a cordless telephone?
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix cordless phones.