You must configure an inbound signaling rule so that Avaya SBC can handle OPTIONS request from Session Manager.
Procedure
Log in to the EMS web interface with administrator credentials.
From the Device menu, click the SBC name to administer.
In the navigation pane, click Domain Policies > Application Rules
The application pane displays the existing signaling rule sets, and the content pane displays the parameters comprising the selected Signaling Rule set.
Select the signaling rule where you want to add In Request parameters.
Click the Requests tab.
Click Add In Request Control.
In the Method Name field, click OPTIONS.
In the In Dialog Action field, click Allow.
In the Out of Dialog Action field, click Block with....
In the fields below Out of Dialog Action, type 200 and OK.
Click Finish.
Next Steps
In the endpoint policy group created for Session Manager, add this signaling group.
