History-Info

An example of the header is shown below:

History-Info: <sip:UserA@ims.example.com;index=1>
History-Info: <sip:UserA@audc.example.com;index=2>

The header properties are shown in the following table:

Header Level Action

Add

Delete

Modify

List Entries

Operations Supported

Yes

Yes

Yes

20

Keyword

Sub Types

Attributes

HistoryInfo

String

Read/Write

Below are header manipulation examples:

Example 1

Rule:

Add a new History-Info header to the message:

■ Message Type: Any
■ Action Subject: header.History-Info
■ Action Type: Add
■ Action Value: '<sip:UserA@audc.mydomain.com;index=3>'

Result:

 
History-Info:sip:UserA@ims.example.com;index=1
History-Info:sip:UserA@audc.example.com;index=2
History-Info: <sip:UserA@audc.mydomain.com;index=3>

Example 2

Rule:

Delete an unwanted History-Info header from the message:

■ Message Type: Any
■ Action Subject: header.History-Info.1
■ Action Type: Remove

Result:

 
History-Info: <sip:UserA@ims.example.com;index=1>

Example 3

Rule:

Delete all History-Info from the message:

■ Message Type: Any
■ Action Subject: header.History-Info
■ Action Type: Remove

Result:

 
All history-info headers are removed.