Avaya G430 Branch Gateway is a multipurpose branch gateway targeting small and medium branches of 1 to 150 users. G430 Branch Gateway supports two expansion modules to support varying branch office sizes. The branch gateway works in conjunction with IP telephony Communication Manager software running on Avaya S8300E, servers to provide intelligent communications to enterprises of all sizes.

The G430 Branch Gateway combines telephone exchange and data networking features by providing PSTN toll bypass and routing data and VoIP traffic over WAN. The G430 Branch Gateway also features a VoIP engine, an optional WAN router, and Ethernet LAN connectivity. The G430 Branch Gateway provides full support for Avaya IP and digital telephones as well as analog devices such as modems, fax machines, and telephones.