This figure shows a pair of geo-redundant Services Gatekeeper sites, Site 1 and Site 2, performing data synchronization and health monitoring with each other.

Above are two applications. Application A is shown connecting to Site 1 with a solid line and to Site 2 with a dotted line. Application B is shown connecting to Site 2 and Site 1 with solid lines.

Both geo-redundant sites are shown connecting with Wireline/Wireless/SIP Networks.