[Serusers] Question about REGISTER.

[Marian Dumitru]

Hi Ricardo,

I see your problem. What you can do is to set registrar module to use 
only the most recent registered contact:
	modparam("registrar","append_branches", 0)
	modparam("registrar","desc_time_order", 1)

Other thing you can do is to limit the registration time
	modparam("registrar","max_expires", 300)

to use this, be sure your SIP clients supports expire modification by 
server.

Best regards,
Marian Dumitru

Ricardo Martinez wrote:
> Hello List.
> 	I have a question about how SIP and SER work with the Registered
> Endpoints.  Suppose that i have and endpoint with obtaining IP by DHCP.  In
> the first attemp the REGISTER have the IP : 10.0.0.1.  Suppose that after a
> while the enpoint is disconnected and connected again, so by DHCP it takes
> another IP, for example 10.0.0.5.  So in my location table i see.
> -----
> aor       : '5555832351'
> Contact   : 'sip:5555832351 at 10.0.0.1'
> Expires   : 642
> -----
> aor       : '5555832351'
> Contact   : 'sip:5555832351 at 10.0.0.5'
> Expires   : 3000
> ----
> 
> So when i call to the 555-5832351 SER generates two INVITES (to the 2
> registered endpoints) but only the 10.0.0.5 answer the call.  So far this is
> not a problem, but suppose now that a new endpoint with number 5555832359
> obtain by DHCP  the old IP 10.0.0.1, so it tries to register with the
> SIP-Proxy .  What i see in the location table is now:
> 
> -----
> aor       : '5555832359'
> Contact   : 'sip:5555832359 at 10.0.0.1'
> Expires   : 3000
> -----
> aor       : '5555832351'
> Contact   : 'sip:5555832351 at 10.0.0.1'
> Expires   : 442
> -----
> aor       : '5555832351'
> Contact   : 'sip:5555832351 at 10.0.0.5'
> Expires   : 2800
> ----
> 
> So when i call to the 555-5832351 the INVITE goes to these 3 endpoints.
> Generating too much traffic and erroneus RESPONSE messages in SER and in the
> endpoints.
> My question is : Is posible only permit one IP address per endpoint
> registered in the location table?.  Or make sure that only one endpoint with
> a given IP and URI is registered in the location DB?.
> 
> Thanks in advance
> Best Regards
> 
> Ricardo.-
> 
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