1.

Configure core Avaya SBC.

Use the multi-Session Manager checklist in the previous section.

2.

Configure Avaya SBC in the DMZ network.

For more information about configuring Avaya SBC in DMZ, see the previous section.

If there are no remote workers configured to get the service from DMZ Avaya SBC directly, the Enable heartbeat field in the Server Configuration feature corresponds to Core Avaya SBC 1 and Core Avaya SBC 2.

2a.

Configure server interworking profile.

Clone the avaya-ru server interworking profile and name it avaya-ru-multism. The server interworking profile configuration is same, if using the same EMS to manage Avaya SBC in remote location and Avaya SBC in DMZ.

In Timers tab, set the Trans Expire field to 4 seconds. This is to support FAST RESPONSE TIMEOUT.

In Advanced tab, set Record Routes to None.

2b.

Configure server.

Server configuration corresponding to primary Session Manager and secondary Session Manager point to the corresponding external IP address of the Core Avaya SBC.

Ensure that you enable heartbeat so that Avaya SBC sends heartbeats to Session Manager. The heartbeats are used to detect whether a Session Manager is available.

Do not configure server configuration for Presence server.

2c.

Configure topology hiding profile.

2d.

Configure a reverse proxy for file download.

See Creating a reverse proxy relay service for file or firmware download.

2e.

Configure an Application Relay to support IM for remote workers.

See Relay Services field descriptions.

3.

Configure the remote Avaya SBC.

3a.

Do not configure public IP address in the Network Management feature.

3b.

Configure server interworking profile.

Clone the avaya-ru server interworking profile and name it avaya-ru-multism. The server interworking profile configuration is same, therefore you can use the same profile between the two SBCs.

In Timers tab, configure Trans Expire to 4 seconds. This is to support FAST RESPONSE TIMEOUT towards Session Manager.

In Advanced tab, set Record Routes to None.

3c.

Configure server.

When Avaya SBC is facing the internet directly, the server configuration for primary Session Manager and secondary Session Manager must point to the corresponding WAN IP address of the enterprise network or the external IP address of the SBC in DMZ.

3d.

Configure default topology profile.

3e.

Configure a reverse proxy for file download.

See Creating a reverse proxy relay service for file or firmware download.

3f.

Configure an application relay to support IM for remote workers.

See Configuring application relay for IM.