Avaya Media Gateway G250, Administration Manual

Page: 129 / 840

Issue 5 June 2008 129
Chapter 4: Configuring Standard Local
Survivability (SLS)
Standard Local Survivability (SLS) provides a local G250/G350 with a limited subset of MGC
functionality when there is no IP-routed WAN link available to an MGC, or no MGC is available.
!
Important:
Important:
SLS is supported only on G350 gateways which have sufficient memory to host
this application. The hardware version number for the Configuration Symbol (C/S)
must be 2.0 or higher to indicate proper memory support for this application. To
check the hardware version, enter
show system
and check the HW vintage
field. C/S 2.0 translates into HW vintage = 2.
SLS therefore works on gateways with HW Vintage 2 or higher.
SLS is not a replacement for ELS or LSP survivability, which offer full call-feature functionality
and full translations in the survivable mode. Instead, SLS is a cost-effective survivability
alternative offering limited call processing in survivable mode. Although the G250/G350 can
host an S8300 Server in ICC or LSP mode, SLS offers both local survivability and call control.
In contrast to the server-based survivability features, SLS operates entirely from the media
gateway and requires a data set comprised of Avaya Communication Manager translations
(survivable ARS analysis and configuration data). This data set is compiled and distributed to a
group of devices using the Provisioning and Installation Manager (PIM). In the absence of the
PIM, the data set can be configured manually from individual media gateways using CLI
commands. For instructions on configuring SLS, see
Configuring SLS on page 88.
Media module compatibility with SLS
SLS works on the G250/G350 and its media modules only if they satisfy the minimum hardware
vintage and firmware version requirements listed in
Table 17 .
Table 17: G250/G350 media module firmware version required to support SLS
Media module Minimum firmware version required
MM312 Vintage 8
MM710 Vintage 16
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