Version 5.8 465 October 2009
SIP User's Manual 9. IP Telephony Capabilities
9.2.3.4 IP-to-IP Inbound and Outbound Manipulation
The device now supports SIP URI user part (source and destination) manipulations,
whereby a manipulation rule in the table is located according to the source IP group, and
source and destination host and user prefixes. Since outbound manipulations are
performed after routing, the outbound manipulation rule matching can also be done by
destination IP Group. The manipulation rules apply to INVITE, OPTIONS, and SUBSCRIBE
messages (not REGISTER messages).
Host name (source and destination) manipulations are simply host name substitutions with
the names defined for the source and destination IP Groups respectively (if any, in the IP
Group table).
Manipulated destination user and host are performed to the following SIP headers: Request
URI, To, and Remote party ID (if exists). Manipulated source user and host are performed
to the following SIP headers: From, P-Asserted (if exists), P-Preferred (if exists), and
Remote party ID (if exists).
Figure 9-7: SIP URI Manipulation in IP-to-IP Routing
Below is an example of an SBC call flow and consequent SIP URI manipulations:
Figure 9-8: SIP INVITE (Manipulations) from LAN to WAN
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