Session Agent status determination by Pinging (SIP OPTIONS)
Hi everyone,
I'm posting this here as i've seen different customers in the field trying to understand exactly how do we monitor the availabiliy of a SA via SIP OPTIONS, and how it bounces between the different possible status:
I: In-Service
O: Out-of-Service
Disabled
C: Constraints exceeded
S: Transitioning from “O” to “I”.
This information is extracted from Acme Packet - 520-0013-06 - TECHNOTE-Theory of the Session-agent, available for download in the support portal.
A response to OPTIONS or INFO lets the SD‟s SIP proxy know that the agent's SIP stack is functioning – with the assumption being that it is therefore capable of receiving customer traffic. So, the SD keeps the session-agent IN-Service on getting a response.