42  SIP Message Manipulation Syntax 
This section provides a detailed description on the support and syntax for configuring SIP 
message manipulation rules. For configuring message manipulation rules, see Configuring 
SIP Message Manipulation. 
 
42.1  Actions 
The actions that can be done on SIP message manipulation in the Message Manipulations 
table are listed in the table below. 
Table  42-1: Message Manipulation Actions 
Action  Value 
Add  0 
Remove  1 
Modify  2 
Add Prefix  3 
Add Suffix  4 
Remove Suffix  5 
Remove Prefix  6 
 
The maximum length of the value for a manipulation is 299 characters. 
 
42.2  Header Types 
42.2.1  Accept 
An example of the header is shown below: 
Accept:  application/sdp 
The header properties are shown in the table below: 
Header Level Action  Add  Delete  Modify  List Entries 
Operations Supported  Yes  Yes  No  N/A 
Keyword  Sub Types  Attributes 
N/A  N/A  N/A 
 
Below is a header manipulation example: If the supported header does not contain 
'mm,100rel,timer,replaces', then in all INVITE messages add an Accept header that 
appears as follows: 
Accept: application/x-private 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
invite  header.supported != 
'mm,100rel,timer,replaces' 
header.accept  Add  'application/x-
private'