asterisk users - Jan 2008 - WARNING[19164] chan_sip.c: Forbidden - wrong password on authentication for INVITE to '"unknown" <sip:unknown@xxx.xxx.xxx.xxx>

Hi,
I'm using an Asterisk 1.2.18 box with a remote Snom 360. My Snom always 
rings but sometimes (it happens randomly!) no voice is passing thru (2 
ways).
Asterisk CLI shows this warning:

Jan 10 10:03:26 WARNING[19164] chan_sip.c: Forbidden - wrong password on 
authentication for INVITE to '"unknown" <sip:unknown at
xxx.xxx.xxx.xxx>

I have already set localnet and externip parameters inside the general 
section of my sip.conf:
localnet = 192.168.4.0/24
externip = xx.xx.xx.xxx

Is there anybody who knows how to solve this problem?

Thank you!

10 jan 2008 kl. 16.48 skrev gincantalupo:
> Hi,
> I'm using an Asterisk 1.2.18 box with a remote Snom 360. My Snom  
> always
> rings but sometimes (it happens randomly!) no voice is passing thru (2
> ways).
> Asterisk CLI shows this warning:
>
> Jan 10 10:03:26 WARNING[19164] chan_sip.c: Forbidden - wrong  
> password on
> authentication for INVITE to '"unknown" <sip:unknown at
xxx.xxx.xxx.xxx>
>
> I have already set localnet and externip parameters inside the general
> section of my sip.conf:
> localnet = 192.168.4.0/24
> externip = xx.xx.xx.xxx
>
> Is there anybody who knows how to solve this problem?
The error message has nothing to do with "no voice is passing thru".

The error message clearly indicates that you have bad credentials for  
an INVITE.

In order for anyone to help you, you need to reveal more about the setup
and the involved parties in the communication.

/O