[asterisk-users] 401 Unauthorized with Snom but not with Zoiper softphone

Thu Oct 7 09:18:41 CDT 2010

Hi!

> I'm having difficulty with registering a SIP account in a Snom 320 IP-
> phone.

Do a SIP trace on your SNOM phone, and you will most probably see that 
the 401 reply of Asterisk does not arrive on the phone. Then check your 
STUN/ICE settings on the phone in combination with the nat= settings in 
sip.conf on Asterisk.

BTW: Are you happy with firmware 8.4.18? I still stick to 7.3.30 for the 
3xx models.

Philipp