Perform all the steps needed for trunk configurations, including configuration of a SIP trunk with Avaya.
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 Services > SIP Servers.
The system displays the Server Configuration screen.
In the General tab, ensure that you see the servers created in earlier steps.
Click the Advanced tab, and ensure that the Interworking Profile field displays the correct profile selected for the Avaya server.
Optional If the correct Interworking Profile name for Avaya is not selected in the Advanced tab screen, click the Edit button to display the Advanced Edit pop-up screen, and select the profile name for the Avaya Interworking Profile.
Click Finish to save and exit.
In the left navigation pane, click Configuration Profiles > Server Interworking.
In the Interworking Profiles list, click an Interworking profile.
You can clone the default avaya-ru profile, or create a new interworking profile.
Click the Advanced tab.
Click the Edit button at the bottom of the screen.
The system displays the Advanced Edit window.
In the Extensions field, select None.
Click Finish to save and exit.
In the Server Interworking screen, click the General tab.
In the lower-center section of the screen, click the Edit button.
In the Hold Support field, click RFC2543.
Click Next, and then click Finish to save and exit.