Survivable Branch Appliance
AudioCodes Enhanced Media Gateway
14
Document #: LTRT-18206
Support for Analog Devices:
In the Lync Server 2010 environment, the Enhanced Media
Gateway provides support for analog devices such as analog phones and fax machines. The
figure below illustrates the high-level architecture of such an environment:
Figure
1-2: High-Level Architecture of Enhanced Media Gateway with Analog Devices
Survivable Branch Appliance (SBA):
In Office Communications Server 2007/R2 (OCS
2007), given the centralized deployment model, Unified Communication (UC) enabled users
in a remote site are dependent on the servers in the data center for their communication and
collaboration needs, and hence are vulnerable to losing communication capabilities when the
WAN is unavailable. Given the always-available expectation for voice, it is imperative that
the UC solution continues to provide the ability for branch users to make and receive calls
when the WAN from the branch to the primary data center is unavailable.
To provide basic voice services to branch users during a WAN outage, a branch office
survivability solution – the Survivable Branch Appliance (SBA) application - is hosted by
AudioCodes Media Gateway at the branch office. The SBA provides call survivability when
IP network connectivity fails, by maintaining call connectivity between Microsoft’s Office
Communicator (OC) clients themselves at the branch office, and between OC clients and the
PSTN. This solution includes an
AudioCodes
SBA Media Gateway
for PSTN termination.