AudioCodes Mediant 3000, User Manual

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Version 6.6 251 Mediant 3000
User's Manual 17. SIP Definitions
The figure below illustrates a SIP message manipulation example:
Figure 17-3: SIP Header Manipulation Example
Notes:
•
For a detailed description of the syntax for configuring SIP message
manipulation rules, refer to
SIP Message Manipulations Quick Reference
Guide .
•
For the IP-to-IP application, the outgoing message is re-created and
thus, SIP headers that are not relevant to the outgoing SIP session (e.g.,
Referred-By) are not included in the outgoing message. Therefore, if
required, manipulations on such headers should be handled in inbound
manipulation.
•
The values entered in the table are not case-sensitive.
•
For the SBC application, SIP message manipulation is done only after
the Classification, inbound/outbound number manipulations, 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 Message Manipulations table can also be configured using the table
ini file parameter, MessageManipulations.