[OpenSIPS-Users] Basic doubt of sip routing

Toyima Dias toyimads at gmail.com
Fri Feb 11 13:42:30 CET 2011


Thanks Adrian...
So...how does ALice now that bob is in the biloxi.com domain? per the rfc
3263 section 4 (client usage) the ua must use DNS to determine where to send
a call...but i have a softphone righ now, and i'm trying to make a call like
this:

234560 at proxy2.com (inserted by me), not just puting the number....maybe i'm
saying something crazy, but i'm confuse!


2011/2/11 Adrian Georgescu <ag at ag-projects.com>

> The SIP proxy lookups up the domain part, what appears after the @ sign
> before any parameters separated by ; if is an IP address like in your
> example you do not perform a DNS lookup you just send the packet there.
>
> In the request URI you must put the address of the remote end, not your own
> address. In your example user A calls user 264512380973<sip%3A264512380973 at 172.30.140.57> on
> the same Proxy and not a remote one.
>
> See the illustrated examples from:
>
> http://www.tech-invite.com/Ti-sip-ex3261.html
>
>  Adrian
>
>  On Feb 11, 2011, at 1:17 PM, Toyima Dias wrote:
>
>  Adrian, i'm checking the rfc...but even i have a question...when UA sends
> an INVITE to it's proxy to a phone for example (obviously not registered on
> the proxy), the proxy will check the RURI of this invite and it will se the
> following:
>
> user A sends the invite to its proxy : INVITE
> sip:264512380973 at 172.30.140.57 <sip%3A264512380973 at 172.30.140.57>;transport=UDP
> SIP/2.0 (172.30.140.57 is the IP of proxy A)
>
> Where does the DNS takes part? the domain is it's ip address...i'm quite
> confuse, any help would b e appreciated
>
> Thanks
>
>
> 2011/2/11 Toyima Dias <toyimads at gmail.com>
>
>> Thanks Adrian...reading the RFC3263!
>>
>> Thanks!
>>
>>
>> 2011/2/11 Adrian Georgescu <ag at ag-projects.com>
>>
>>  The proxy is using DNS to lookup the destination server.
>>>
>>> Google for RFC 3263
>>>
>>> Adrian
>>>
>>>
>>>   On Feb 11, 2011, at 10:19 AM, Toyima Dias wrote:
>>>
>>>   Hello community,
>>>
>>> I have a doubt, how does a SIP Proxy (OpenSIPS) would handle a call for a
>>> domain that he doesn't now? i mean...user A is registered in proxy AA, if A
>>> wants to call to another user in another domain (not registered in the Proxy
>>> AA) how does this proxy should handle the call? how does he now where to
>>> send this call?
>>>
>>> Any clarification would be appreciated :)
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>>>
>>>
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>>
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