SIP OOD OPTION PING vs In-dialogue OPTIONs

[Andrey Vorobev]

Hello.

Could somebody clarify to me difference between "voice-class sip options-keepalive" and "voice-class sip options-ping"

voice-class sip ?
    options-keepalive         send out-of-dialogue OPTIONS PING to configured proxy/session-target
    options-ping                  send in-dialogue OPTIONs to ping other endpoint

Which options should I use to monitor CUCM?

What is pros and conf of each method?
Is it safe to use both options simultaneously?

[Jonathan Schulenberg · Accepted solution]

A call is known as a dialog in SIP. In-dialog would mean that the ping is done for a given Call-ID. You want "voice-class sip options-keepalive" so the keep alive messages are sent on their own, even if there isn't an active call.

On a related note, you should look at voice class sip-keepalive-profile.