Cseq

An example of the header is shown below:

CSeq: 1 INVITE

The header properties are shown in the following table:

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:

Rule:

If the Cseq number is 1, then modify the user in the Contact header to fred.

Message Type: Invite
Condition: header.cseq.num=='1'
Action Subject: header.contact.url.user
Action Type: Modify
Action Value: 'fred'

Result:

Contact: <sip:fred@10.132.10.128:5070>