Specifications

Media gateways and integrated gateways
110 Hardware Description and Reference for Avaya Communication Manager
G150 WAN Expansion Module
This expansion card provides a single WAN connection (X.21 or V.35) by a standard 37-way
D-Type socket. For details of the relevant cable specifications and pin-outs, see the "Getting
Started with the G150 Media Gateway" document. Line speeds up to and including 2Mbps are
supported on the interface. The carrier providing the line dictates the actual operating speed,
i.e. in some territories the maximum speed might be 1.544Mbps.
G150 BRI Module
The G150 Media Gateway supports the standard a Basic Rate ISDN (BRI) trunk module, which
provides 4 European Basic Rate ISDN 4-wire S/T-Bus interfaces (8 trunks).
Details of the supported supplementary services on BRI interfaces are given in the 'Public and
Private Voice Networks' section.
Note:
Note: This module is not available in all territories. Check for availability.
G150 PRI Module
The G150 Media Gateway also supports the PRI module. This module provides a single T1
primary rate trunk interface for supporting voice services and fractional leased lines. This
interface supports up to 256kbps bandwidth on IP and Frame Relay services.
Note:
Note: This module is not available in all territories and does not support E1. Check for
availability.
Survivability
If, for any reason, communication stops between a G150 Media Gateway and the media server
running Communication Manager, the G150 Media Gateway automatically assumes control of
call processing for local extensions and trunks. The G150 Media Gateway enables a built-in
H.323 gatekeeper, which allows collocated branch office IP telephones to register with the G150
Media Gateway. Once the IP telephones are registered, the G150 Media Gateway assumes
control of all lamps, displays, and buttons on the IP telephones. Only IP-to-IP shuffled calls are
preserved during the transition of control to the G150 Media Gateway. Any other calls end.
Note:
Note: The IP address of the G150 survivable gatekeeper is the last entry in the
alternate gatekeeper list for any IP telephone that was originally registered with
Communication Manager.