SBM powered by Microsoft Lync™ Administrator's Guide 2011-11

A-30
Ready the Data Center for an SBM Deployment
Add the Survivable Branch to the Lync Server Topology
20. If the SBM is using SIP trunking, but you want it to use its own PSTN
interfaces as backup lines, add the SBM as another PSTN gateway. Right-
click PSTN gateways, select New IP/PSTN Gateway, and specify the SBM’s
FQDN, transport protocol (TLS recommended), and port (default, 5081,
for TLS, or 5082, for TCP).
21. Click Lync Server 2010 at the top of the topology builder. On the Actions
pane on the right, click Publish Topology.
22. In the window that is displayed, click Next.
Figure A-26. Lync Server 2010 Topology Builder > Publish Topology Wizard >
Publishing wizard complete Page
23. After the wizard has successfully published the topology, click Finish.
Note If an error occurs, make sure that a Domain or Enterprise Admin has com-
pleted the following tasks:
■ Added the SBM computer object with the same hostname that you are
using for the FQDN
■ Specified the SBM’s SPN with the same FQDN that you are using
(SPN=HOST/<FQDN>)