[SR-Users] loose_route security

Juha Heinanen jh at tutpro.com
Sun Apr 17 18:24:46 CEST 2011


Iñaki Baz Castillo writes:
 
> I've never seen a PSTN gw properly handling a REFER, neither I think a
> PSTN gw should handle it (but a B2BUA/PBX) between the UA and the PSTN
> gw(s).

inaki,

your suggestion would mean that proxy would need to route every call
between sip ua and pstn gw via a b2bua, because you cannot know in
advance, if refer will be used or not.

-- juha



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