Polycom ReadiConvene Deployment Manual page 26

Microsoft—Polycom Environment Setting
2-14
6
In the H323 dialog box, specify the gatekeeper parameters:
This step can be skipped if your environment does not include a gatekeeper.
a
In the Use Gatekeeper section, select Specify to manually define
the IP address of the preferred gatekeeper.
b Enter the IP address of the gatekeeper.
c
In the Service Mode box, select Board Hunting.
d
In the Prefix box, enter the same prefix that has been defined for
the Network Service in the gatekeeper. This number is used as
part of the dial-in string given to H.323 participants connecting
to conferences.
e
Click Next.