15 Nov
2007
15 Nov
'07
1:22 p.m.
El Thursday 15 November 2007 13:18:29 Klaus Darilion escribió:
Ok, understood. Thanks a lot.
--
Iñaki Baz Castillo
ibc(a)in.ilimit.es
Sorry Klaus, I
don't understnad what you mean with "screening of REFER
and 3XX to the proxy", could you explain it please?
For example, if the system is a POTS replacement (no PBX feature, just
VoIP-VoIP and VoIP-PSTN with phone calls) then I would:
1. if method==REFER
sl_reply("403","");
2. activate a failure route and if response code = 3xx then
sl_send_reply("500",)
If the system also offers PBX features (call transfer ...) then you can
not just block it - but you can screen it - e.g. for REFER requests
check if the URI in the Refer-To header does not contain premium rate
phone numbers, or that REFERs are not sent to the gateway ...