Polycom 1500/1800/2000/4000 manual Dial-in Calls, Yes

Gateway Calls

When the flag is set to NO (default), if the Gatekeeper is not functioning, the Collaboration Server dials to the endpoint using the endpoint’s IP address configured in the IP Address field of the New Participant/Participant Properties - General dialog box.

If no IP address is defined in the Participant Properties, the call will fail.

The method by which calls are dialed out to the endpoint is dependant on the flag value and the availability of the Gatekeeper as summarized in the following table:

Determination of Method for Dialing an Endpoint by Flag and Gatekeeper Availability

	Gatekeeper
Flag Value	Available	Results
NO	NO	Dial out to endpoint IP Address bypassing the Gatekeeper.
NO	YES	Dial out to endpoint Alias Name using the Gatekeeper.
YES	NO	No dial out to endpoint.
YES	YES	Dial out to endpoint Alias Name using the Gatekeeper.

Dial-in Calls

For Dial-in calls, direct IP dialing is enabled or disabled by the GK_MANDATORY_FOR_CALLS_IN and system flag.

Polycom®, Inc. 629