[Asterisk-Users] SIP Gerenal settings conufsion

[Pizco Dominguez]

"The truth is out there"

You just need a good shovel...

PD
On Sun, May 15, 2005 at 04:53:58PM -0400, Jeffrey Starin wrote:
> Jonathan!  You don't know how much that simple explanation has helped me 
> understand Asterisk.  Well done.  Well said.  And to the point clearly.
> 
> I would hope this could find it's way onto the Asterisk Wiki and be the 
> *first* thing someone reads when looking at the documentation about sip.
> 
> Thanks a million!
> 
> J.
> 
> Johnathan Corgan wrote:
> 
> >Jeffrey Starin wrote:
> >
> >>I have a little confusion about the general settings (other than the 
> >>register values) in the SIP
> >>General area. 
> >
> >
> >[snip]
> >
> >>However, I'm confused as to the purpose of the
> >>"general" settings -- to what or which connection do they apply?  Since
> >>the context suggested for the general settings is something like
> >>"nothing" to avoid unwanted sip calls, I'm confused as to the purposse
> >>of values in the general section since all parameters for 
> >>communications with VOIP providers is contained in the contexts such 
> >>as I specified above, i.e., [FWD] or for example [BROADVOICE].  Can 
> >>someone shed some light on that for me?
> >
> >
> >Well, your confusion is understandable, given the way sip.conf works. 
> >   Parameters which affect incoming calls are not separated from those 
> >that affect outgoing calls, so it's easy to get mixed up (well, for 
> >me, anyway.)
> >
> >In the [general] section the parameters become the defaults used 
> >unless overridden in a specific peer section.  Also, if an incoming or 
> >outgoing SIP call doesn't match a specific peer section, these 
> >parameters get used.
> >
> >So, for example, if you don't want any incoming SIP calls that aren't 
> >from a known provider, you can set the default context to something 
> >innocuous as you describe above and the call will get rejected as a 
> >non-existent context.  This is what you described in our original mail.
> >
> >But also in this [general] section are settings for *outbound* calls 
> >using SIP that aren't using a specific peer section.  This can be done 
> >with the Dial command, using a dial string such as 
> >IP/xxxxx at provider.com where provider.com is not listed in sip.conf.  
> >This might happen, say, in the case of using the ENUM lookup 
> >capability, where the outbound SIP address of a phone number is 
> >determined dynamically at call time rather than pre-configured in 
> >extensions.conf/sip.conf.
> >
> >Personally, I'd like to see this changed so there are two 'general' 
> >sections--one for default parameters to use unless overridden when 
> >there *is* a peer section below, and a different one to describe 
> >parameters to use when the remote peer is not previously known.  I 
> >know there are ways to accomplish this with the existing sip.conf 
> >structure but it seems very counter-intuitive.
> >
> >-Johnathan
> >
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> 
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-- 
Pizco Dominguez
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