Hi,
i just added a few lines to the SDP-Filter of the SBC in order to
clear "s=" and "o=" lines.
The "o=" lines is replaced with "-" as a user (per RFC2327: "or it is
"-" if the originating host does not support the concept of user
ids."), the sessionId and Version is replaced with new values.
The "s="-lines is replaced with an empty string.
Some CPE's place the originating number in those lines of the SDP
(e.g. Zyxel-Devices), some Gateways add information here about the
gateway (e.g. Cisco or the Sipgate-Gateways).... regulations in
germany require that we anonymize messages; if the number stays in the
SDP all the anonymizing of the SIP-signalling is useless....
Thanks for a great SEMS!
So long,
Carsten
--
Carsten Bock
CEO (Geschäftsführer)
ng-voice GmbH i. Gr.
Schomburgstr. 80
D-22767 Hamburg / Germany
http://www.ng-voice.com
mailto:[email protected]
Mobile +49 179 2021244
Office +49 40 34927219
Fax +49 40 34927220
Hier finden Sie unsere handelsrechtlichen Pflichtangaben:
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diff --git a/apps/sbc/SDPFilter.cpp b/apps/sbc/SDPFilter.cpp
index 7370b66..d4359a6 100644
--- a/apps/sbc/SDPFilter.cpp
+++ b/apps/sbc/SDPFilter.cpp
@@ -114,5 +114,12 @@ int normalizeSDP(AmSdp& sdp) {
// (only media level - RFC3108 4.)
fix_incomplete_silencesupp(*m_it);
}
+ // Clear s-Line in SDP:
+ sdp.sessionName.clear();
+ // New o-Line in SDP:
+ sdp.origin.sessId = get_random();
+ sdp.origin.sessV = get_random();
+ sdp.origin.user = "-";
+
return 0;
}
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