[asterisk-users] Asterisk reject SIP INTITE from different source ports

[Gareth Blades]

Deepika Nijhawan wrote:
> It just gives no matching peer error and doesn’t pick their sip 
> configuration, so do not go to any context in extentions.conf.
> 
>  
> 
> VERBOSE[3252] chan_sip.c: No matching peer for 'calling number' from 
> IP:4604'
> 

So the question is why didnt it match anything.
If the phones are registering then they should reregister before 
choosing a different port.

Are they going through a firewall by any chance?