Appendix H - Integration Into Microsoft Environments
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7Click the SIP Advanced tab.
8In the ICE Environment field, select MS (for Microsoft ICE implementation) to enable the ICE
integration.
9In the Server User Name field, enter the Collaboration Server User name as defined in the Active
Directory. For example, enter rmx111.
This field is disabled if the ICE Environment field is set to None.
10 Multiple Lync Registrations can be configured on the Collaboration Server. For more information see
Multiple Lync Registrations on the Collaboration Server.
11 Optional if the Fixed Ports options was selected previously.
Click the Ports tab to modify the number of UDP Ports allocated to the calls to accommodate the
number of ports required for ICE dialing.
12 In the UDP Port Range, modify the number of UDP ports by enter the first and last port numbers in
the range. When ICE environment is enabled, the number of ports defined in the range should be
2048.
13 Click OK.
The Collaboration Server will register with the OCS/Lync Server enabling automatic retrieval of the
STUN server and Relay server parameters for ICE dialing.
These parameters can be viewed in the Signaling Monitor - ICE Servers dialog box.
Monitoring the Connection to the STUN and Relay Servers in the ICE Environment
1In the Collaboration Server Web browser, in the Collaboration Server Management pane, click
Signaling Monitor.
2In the Signaling Monitor pane, click the IP Network Service entry.
3Click the ICE Servers tab.