Level 1: Cadet

Telstra T48g SIP XSI authorisation failed

Hi, I have a telstra t48g. If I try and redial a number that I missed I get 'SIP XSI authorisation failed'

Please can anyone help? as it would be handy not to have to write the number down just to call them back.


Was this helpful?

  • Yes it was, thank you
  • No, I still need help

Telstra 24x7®

Manage your business services on your mobile with the Telstra 24x7® App

Find out more