12 Aug
2009
12 Aug
'09
12:45 p.m.
12 aug 2009 kl. 11.41 skrev Alex Balashov:
Olle E. Johansson wrote:
I did not say it was stupid, but it's not related to security...
Anyway, there's some work in the IETF to handle the register for
multiple DID's, since the way it's used now clearly violates what's in
the RFCs and there is an obvious need to register for "SIP trunks".
/O
...and I've seen implementation who refuse to
accept the registered
contact as a request URI...
There's some vague security thinking behind a device who doesn't
accept any r-URI from, but only the registered contact. Is some
cases, the contact indicates a line or something in the device, so
it needs the full contact to be able to provide the user with the
proper interface reaction for the incoming call.
Yep. It's not stupid; the logic is quite clear, and the behaviour
is as intended. It just poses a problem for trunking and/or
multiple DIDs where the device is expected to potentially route a
call differently based on the number used to reach it.