AudioCodes Mediant 4000 SBC, User Manual

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CHAPTER 26 SBC Manipulations
Mediant 4000 SBC | User's Manual
26 SBC Manipulations
This section describes the configuration of the manipulation rules for the SBC application.
For additional manipulation features, see the following:
● Configuring SIP Message Policy Rules
● Configuring SIP Message Manipulation
The device supports SIP URI user part (source and destination) manipulations for inbound and
outbound routing. These manipulations can be applied to a source IP group, source and destination
host and user prefixes, and/or user-defined SIP request (e.g., INVITE, OPTIONS, SUBSCRIBE,
and/or REGISTER). Since outbound manipulations are performed after routing, the outbound
manipulation rule matching can also be done by destination IP Group. Manipulated destination user
and host are performed on the following SIP headers: Request-URI, To, and Remote-Party-ID (if
exists). Manipulated source user and host are performed on the following SIP headers: From, P-
Asserted (if exists), P-Preferred (if exists), and Remote-Party-ID (if exists).
You can also restrict source user identity in outgoing SIP dialogs in the Outbound Manipulation
table (using the column PrivacyRestrictionMode). The device identifies an incoming user as
restricted if one of the following exists:
■ From header user is 'anonymous'.
■ P-Asserted-Identity and Privacy headers contain the value 'id'.
All restriction logic is done after the user number has been manipulated.
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 Groups
table).
Below is an example of a call flow and consequent SIP URI manipulations:
■ Incoming INVITE from LAN:
INVITE sip:1000@10.2.2.3;user=phone;x=y;z=a SIP/2.0
Via: SIP/2.0/UDP 10.2.2.6;branch=z9hGLLLLLan
From:<sip:7000@10.2.2.6;user=phone;x=y;z=a>;tag=OlLAN;paramer1=abe
To: <sip:1000@10.2.2.3;user=phone>
Call-ID: USELLLAN@10.2.2.3
CSeq: 1 INVITE
Contact: <sip:7000@10.2.2.3>
Supported: em,100rel,timer,replaces
Allow: REGISTER,OPTIONS,INVITE,ACK,CANCEL,BYE,NOTIFY,PRACK
User-Agent: Sip Message Generator V1.0.0.5
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