AudioCodes Mediant 4000 SBC User Manual page 512

CHAPTER 21 SIP Message Manipulation
■ Deletion of SIP body (e.g., if a message body is not supported at the destination network this
body is removed)
■ Translating one SIP response code to another
■ Topology hiding (generally present in SIP headers such as Via, Record Route, Route and
Service-Route).
■ Configurable identity hiding (information related to identity of subscribers, for example, P-
Asserted-Identity, Referred-By, Identity and Identity-Info)
■ Multiple manipulation rules on the same SIP message
■ Apply conditions per rule - the condition can be on parts of the message or call's parameters
■ Multiple manipulation rules using the same condition. The following figure shows a
configuration example where Rules #1 and #2 ('Row Rule' configured to Use Previous
Condition) use the same condition as configured for Rule #0 ('Row Rule' configured to Use
Current Condition). For more information, see the description of the 'Row Rule' parameter in
this section.
The following figure illustrates an example of a SIP message that is manipulated by the device as
follows:
1. Removes the "Unknown_header: unknown_value" in the incoming message.
2. Changes the P-Asserted-Identity header value to "sip:200@10.33.216.1" in the outgoing
message.
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Mediant 4000 SBC | User's Manual