[SR-Users] loose_route security

[Iñaki Baz Castillo]

2011/4/17 Juha Heinanen <jh at tutpro.com>:
> 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.

Yes. But IMHO this is typicall in any PBX environment in which users
have short extensions (200, 201...) and the PSTN gws are not aware of
them.

-- 
Iñaki Baz Castillo
<ibc at aliax.net>