TANDBERG MCU 4500, MSE 8510 manual the H.323 gatekeeper status will indicate

The MCU also displays brief status information about its registrations with the configured gatekeeper.

To display a complete list of all IDs that the MCU is attempting to register with the configured H.323 gatekeeper,

click the link in the Number of active registrations row of the gatekeeper status table; this takes you to the Active registrations page.

Displays the IP address of the gatekeeper	This information might be useful if the gatekeeper
currently being used by the MCU.	has been specified with a host name rather than
	with an IP address.
	If the MCU has been unable to reach the
	configured gatekeeper and has instead registered
	with an alternate gatekeeper, the status displayed
	here will be "registered with alternate gatekeeper
	<IP address>".
Displays the local IP address and port number that	This information might be useful if the MCU has
the MCU has registered with the gatekeeper.	more than one IP address, for instance if both
	Ethernet interfaces are in use.
Displays the number of 'alternate' gatekeepers	Where the configured gatekeeper has told the
configured on the H.323 gatekeeper. This figure	MCU about any configured 'alternate'
comes from the gatekeeper itself; if there are any	gatekeepers and if the MCU loses contact with
'alternate' gatekeepers configured, the gatekeeper	the configured gatekeeper, the MCU will attempt
tells the MCU their IP addresses.	to register with each of the 'alternates' in turn. If
	none of the 'alternate' gatekeepers responds, the
	MCU will report that the registration has failed.
	If the MCU successfully registers with an
	'alternate' gatekeeper:
	the H.323 gatekeeper status will indicate
	that registration is with an 'alternate'
	the list of 'alternates' received from the
	new gatekeeper will replace the
	previous list
	the MCU will only revert back to the
	original gatekeeper if the 'alternate' fails
	and only if the original gatekeeper is
	configured as an 'alternate' on the
	current gatekeeper's list of 'alternates'
	Note that if the MCU registers with an 'alternate'
	that does not itself supply a list of 'alternates', the
	MCU will retain the original list and if it loses
	contact with the current gatekeeper, each one
	will be attempted from the top again as before.
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