G450 can support up to 450 users when deployed as a branch gateway in a mid-to-large branch office of a large enterprise or a call center and can serve up to 2400 users when deployed as a campus gateway. Both configurations require Communication Manager IP telephony software running on one or more Avaya supported Servers. The Avaya S8300E Server provides a capacity of 450 users.
Telephone services on G450 are controlled by an Avaya supported Servers operating either as an External Call Controller (ECC) or as an Internal Call Controller (ICC). The G450 supports the Avaya S8300E Server as an ICC or as an ECC when S8300E is installed in another Branch Gateway. The G450 also supports the Avaya duplex servers as ECCs.
In addition to an ECC, an ICC can be installed as a Survivable Remote Server (Local Survivable Processor) designed to take over call control when the ECC fails or WAN link between the branch office and main location breaks. The Survivable Remote Server provides full featured telephone service survivability for the branch office. G450 Branch Gateway also features Standard Local Survivability (SLS) which provides basic telephone services when the connection with the primary ECC is lost.
G450 is a scalable device with a basic configuration consisting of one power supply unit (PSU), 256 MB RAM, and a single DSP childboard supporting either 20, 80, or 160 VoIP channels. This configuration can be enhanced by adding a redundant PSU, up to two RAM modules of 1 GB each, and up to four additional DSP childboards, increasing the number of VoIP channels to 320 channels. The G450 main board has four slots for VoIP engines. You can install up to two MP160 (Media Processor 160). An MP160 provides 160 channels for voice transport. For more information about installing MP160, see Configuring V.150.1 on the Avaya G450 Branch Gateway.
G450 Branch Gatewayis a modular device, adaptable to support different combinations of endpoint devices. While fixed front panel ports support the connection of external LAN switches, network data ports, Ethernet WAN lines and external routers, eight slots are provided for plugging in optional media modules. Pluggable media modules provide interfaces for different types of telephones, trunks, and WAN links. A combination is selected to suit the needs of the branch. A range of telephony modules provides full support for legacy equipment such as analog and digital telephones. A range of WAN modules provide support for Universal Serial Port and E1/T1 WAN links. IP phones are supported through an external LAN switch.
The G450 chassis features field replaceable RAM, DSPs, PSUs, fan tray, and main board module for enhanced reliability.
For more information about features of the G450 Branch Gateway, see Overview for the Avaya G450 Branch Gateway, 03-602058.
