Below is a header manipulation example that changes the user part in the Contact header 
in all INVITE messages to "john" as follows: 
Contact: <sip:john@10.132.10.128:5070>: 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
invite  -  header.contact.url.user  Modify  'john' 
 
 
42.2.6  Cseq 
An example of the header is shown below: 
CSeq: 1 INVITE 
The header properties are shown in the table below: 
Header Level Action  Add  Delete  Modify  List Entries 
Operations Supported  No  No  No  N/A 
 
Keyword  Sub Types  Attributes 
Num  Integer  Read Only 
Type  String  Read Only 
 
Below is a header manipulation example that if the Cseq number is 1, the user in the 
Contact header is changed to "john" as follows: 
Contact: <sip:fred@10.132.10.128:5070> 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
invite  header.cseq.num=='1'  header.contact.url.user  Modify  'john' 
 
 
42.2.7  Diversion 
An example of the header is shown below: 
Diversion: <sip:654@IPG2Host;user=phone>;reason=user-
busy;screen=no;privacy=off;counter=1 
The header properties are shown in the table below: 
Header Level Action  Add  Delete  Modify  List Entries 
Operations Supported  Yes  Yes  Yes  3 
 
Keyword  Sub Types  Attributes 
Name  String  Read/Write 
Param  Param  Read/Write 
Privacy  Enum Privacy (see 'Privacy' on page 
446) 
Read/Write 
Reason  Enum Reason (see 'Reason 
(Diversion)' on page 446) 
Read/Write