Polycom RMX 1500 Administrator's Manual page 1069

Chapter H-Setting the RMX for Integration Into Microsoft Environment
Defining the Microsoft SIP Server in the IP Network Service
To enable the registration of the conferencing entities the SIP Server Type
must be set to Microsoft and the Office Communication Server or Lync
Server properties in the IP Network Service - SIP Servers dialog box.
For more details, see "Configuring the RMX IP Network Service" on
page H-83.
Enabling Registration in the Conference Profile
Registration of conferencing entities such as ongoing conferences, Meeting
Rooms, Entry Queues, SIP Factories and Gateway Sessions with SIP servers is
done per conferencing entity. This allows better control on the number of
entities that register with each SIP server.
Selective registration is enabled by assigning a conference Profile in which
registration is enabled to the conferencing entities that require
registration. Assigning a conference Profile in which registration is
disabled (registration check box is cleared) to conferencing entities will
prevent them from registering. By default, Registration is disabled in the
Conference Profile, and must be enabled in Profiles assigned to
conferencing entities that require registration.
H-101