In Normal mode, when SRG-capable phones are redirected by the UCX SRG to the main office server, calls received by the remote office UCX (configured for SRG) from PSTN trunks for extensions associated with these phones must be forwarded to the main office system. To automatically configure forwarding of PSTN calls, an outbound route from the UCX SRG to the main office system must be defined and the prefix used by this route must be configured as the Main Office Route Prefix.
To configure the prefix used by the outbound route to the MO perform the following steps: