You can connect a modem to the Branch Gateway to enable the configuration from a remote location. You can use a serial modem connected to the Branch Gateway for the modem dial backup feature, which provides a redundant connectivity with a remote primary Media Gateway Controller. Modem dial backup provides better survivability than switching to a secondary Media Gateway Controller because more features are preserved.

If S8300 is installed in Branch Gateway, leave a modem connected permanently to enable reporting of alarms to remote locations.

Modem access is not supported if FIPS mode is enabled in the gateway.