[Serusers] Question about REGISTER.
Ricardo Martinez
rmartinez at redvoiss.net
Wed Oct 27 18:53:34 CEST 2004
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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