Polycom 1500 Administrator's Manual page 1106

RealPresence Collaboration Server (RMX) 1500/1800/2000/4000 Administrator's Guide
7 Click the SIP Advanced tab.
8 In the ICE Environment field, select MS (for Microsoft ICE implementation) to enable the ICE
integration.
9 In 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.
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