[asterisk-users] Re: 302 Moved temporarely

[Eric "ManxPower" Wieling]

Tomislav Parcina wrote:
> Eric "ManxPower" Wieling wrote:
>> I believe that if Asterisk receives a 302 back from a device when 
>> sending a call to it (i.e. the SIP device has Call Forwarding set) 
>> Asterisk will do the right thing.  This may only work for redirects to 
>> locations on the same Asterisk server.  This is NOT the case with 
>> registrations, only call setup.
> 
> Well, this happens when I try to make outgoing call through Voipbuster 
> SIP provider. I register fine, but sometimes when I try to call someone 
> I receive that message (probably they redirect me to some server with 
> lower usage) and I can't establish phone call.
> 
> But, as far as I have understand you, this should work. Right?

Yes.  My only experience with 302s are when I enable call forwarding on 
a Polycom or Cisco phone.  The phone sends Asterisk a 302 and Asterisk 
then uses chan_local to process the call thru the dialplan as though the 
call was dialed locally.  I vaguely recall Olle adding the 302 support 
several years ago and mentioning that there were security implications 
with supporting 302s to destinations outside of Asterisk.  <goes to 
look>  Look at this in sip.conf.sample:

;promiscredir = no              ; If yes, allows 302 or REDIR to 
non-local SIP address
                                 ; Note that promiscredir when redirects 
are made to the
                                 ; local system will cause loops since 
SIP is incapable
                                 ; of performing a "hairpin" call.