SIP OPTIONS

I'm having an issue testing FreeSBC in front of an Asterisk server. The issue I'm having is that SIP OPTIONS sent from Asterisk always receive 200 OK.

I have the Forwarding Mode set to Contact Remapping at the moment and the registrations are successfully sent from the SBC to the Asterisk server.

In the Asterisk PJSIP settings, if I set qualify_frequency to 10 seconds and my ATA is registered directly to the Asterisk server, Asterisk will say that the endpoint is unreachable within 10 seconds of me unplugging its ethernet cable. I can also send a SIP OPTIONS using 'pjsip qualify endpoint'.

But if I have the ATA registration forwarded from FreeSBC, the OPTIONS from Asterisk will receive 200 OK even if the ATA is down. We have to wait until the registration expires completely.

Is there a way for OPTIONS to get relayed to the endpoint when going through FreeSBC?

Thanks

In the SIP Registration Domain Settings, you need to set minimum value for Minimum Contact Expiration