[Asterisk-Users] Always get 401 Unauthorized..that normal?

[Matthew Boehm]

I always get a 401 Unauthorized result before the registration succeedes on
these SIP phones. Is that normal? A REGISTER packet is sent, then a 100
Trying, then a 401 Unauthorized, then another REGISTER and another Trying,
then OK.

Is it normal to always get that 401? Why would registration be unauthorized
then suddenly work? Or is this some algorithm that SIP uses to try different
auth schemes?

The phones are Cisco 7960 btw..

Thanks,
Matthew