For all messages, modify the Session-Expires header to 300 as follows: 
Session-Expires: 300 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
   
header.Session-
Expires.time 
Modify  '300' 
 
  For all messages, add a parameter called "longtimer" to the header as follows: 
Session-Expires: 480;longtimer=5 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
   
header.Session-
Expires.param.longtimer 
Add  '5' 
 
  For all messages, set the refresher to 1 (UAC) as follows: 
Session-Expires: 300;refresher=uac;longtimer=5 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
   
header.session-
expires.refresher 
Modify  '1' 
 
 
42.2.32  Subject 
An example of the header is shown below: 
Subject: A tornado is heading our way! 
The header properties are shown in the table below: 
Header Level Action  Add  Delete  Modify  List Entries 
Operations Supported  Yes  Yes  Yes  N/A 
 
Keyword  Sub Types  Attributes 
Subject  String  Read/Write 
 
Below is a header manipulation example that adds a Subject header to all messages as 
follows: 
Subject: A tornado is heading our way! 
Message Type  Condition  Action Subject 
Action 
Type 
Action Value 
 
 
header.Subject  Add  'A tornado is heading our 
way!'