AudioCodes E-SBC User Manual page 550

CHAPTER 21 SIP Message Manipulation
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The following procedure describes how to configure Message Manipulation rules through the Web
interface. You can also configure it through ini file [MessageManipulations] or CLI (configure
voip > message message-manipulations).
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To configure SIP message manipulation rules:
1. Open the Message Manipulations page (Setup menu > Signaling & Media tab > Message
Manipulation folder > Message Manipulations).
2. Click New; the following dialog box appears:
3. Configure a Message Manipulation rule according to the parameters described in the table
below.
4. Click Apply.
An example of configured message manipulation rules are shown in the figure below:
■ Index 0: Adds the suffix ".com" to the host part of the To header.
■ Index 1: Changes the user part of the From header to the user part of the P-Asserted-ID.
■ Index 2: Changes the user part of the SIP From header to "200".
For a detailed description of the syntax used for configuring Message Manipulation
rules, refer to the Syntax for SIP Message Manipulation Reference Guide.
For the SBC application: Inbound message manipulation is done only after the
Classification, inbound and outbound number manipulation, and routing processes.
Each message can be manipulated twice - on the source leg and on the destination
leg (i.e., source and destination IP Groups).
Unknown SIP parts can only be added or removed.
SIP manipulations do not allow you to remove or add mandatory SIP headers. They
can only be modified and only on requests that initiate new dialogs. Mandatory SIP
headers include To, From, Via, CSeq, Call-Id, and Max-Forwards.
The SIP Group Name (IPGroup_SIPGroupName) parameter overrides inbound
message manipulation rules that manipulate the host name in Request-URI, To,
and/or From SIP headers. If you configure a SIP Group Name for the IP Group (see
Configuring IP Groups) and you want to manipulate the host name in these SIP
headers, you must apply your manipulation rule (Manipulation Set ID) to the IP
Group as an Outbound Message Manipulation Set (IPGroup_OutboundManSet),
when the IP Group is the destination of the call. If you apply the Manipulation Set
as an Inbound Message Manipulation Set (IPGroup_InboundManSet), when the IP
Group is the source of the call, the manipulation rule will be overridden by the SIP
Group Name.
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