SBM powered by Microsoft Lync Administrator's Guide 2010-11

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Ready the Data Center for an SBM Deployment
Add the Survivable Branch to the Lync Server Topology
5. Assign branch Lync users to the SBM’s pool (these users might be existing
users or new ones).
The SBM will be the primary Registrar for Lync users at the branch site.
If you are using special accounts for the Health Monitoring pool, remem-
ber to add those accounts to the pool as well.
6. It is recommended that you configure Media Bypass for the SBM’s site.
This feature enables Lync users to send their VoIP traffic directly to the
SBM’s Media Gateway (PSTN gateway). The SBM’s Mediation Server still
handles signaling traffic to establish the calls, but it does not have to
process all of the media traffic—potentially eliminating some lag and
dropped packets and increasing the SBM’s potential call load.
You can enable Media Bypass globally or for certain traffic only as
determined by site and region configuration. With the latter option, Media
Bypass automatically applies to calls assigned the same bypass ID as the
PSTN gateway. All subnets associated with a site inherit the site’s bypass
ID. Therefore, to ensure that all branch PSTN calls that are routed through
the SBM use Media Bypass, associate all subnets in the branch LAN,
including the one on which the SBM resides, with the same site.
Planning your regions and sites involves complexities that are beyond the
scope of this guide. Refer to Microsoft planning and deployment guides.
7. Set up a Health Monitoring pool.
The SBM Setup Wizard includes a test that verifies that branch Lync users
can successfully place calls through the PSTN. To generate the test calls,
the SBM draws on the user accounts within its Health Monitoring pool.
You must create a pool for which the identify is the SBM’s FQDN. The pool
also contains the SIP usernames (sip:<sip name>) for two valid Lync users
within the SBM’s pool. Typically, you should specify user accounts specif-
ically created for the test, but you can use any accounts assigned to the
SBM pool.
Note You must use the Lync Server Management Shell to create the Health Moni-
toring pool. The cmdlet is New-CsHealthMonitoringConfiguration.