Polycom V2IU 4350 user manual This is an advanced configuration option and should

Configuring the V2IU 4350

If LAN/Subscriber-Side Gatekeeper mode is selected, you must configure the following parameters:

Item	Description
LAN/Subscriber-side GK	Enter the IP address of the gatekeeper.
address
Allow public IP in LCF	Select the checkbox if the gatekeeper has been deployed
	with multiple outbound proxies and must decide which
	proxy to use based on the IP address returned in the LCF.
	This is an advanced configuration option and should
	usually not be selected.

If Embedded Gatekeeper is selected, you must configure the following parameters:

Item	Description
Time-to-Live(s)	Enter a time in seconds. This setting controls how
	long an endpoint’s registration should be valid. At
	the end of this period the endpoint sends another
	registration request.
Prevent calls from	Blocks unregistered LAN-side endpoints from
unregistered endpoints:	making calls through the device.

In the LRQ Size area, you can limit the number of source aliases in a forwarded LRQ message to a maximum of two to allow interoperability with gatekeepers that cannot handle more than two source aliases.

In the Default Alias area, you can specify a default alias to be added to incom- ing calls without a destination message in the Q.931 Setup message. This alias allows the embedded gatekeeper or a LAN/Subscriber-side gatekeeper to route the call to a default endpoint. Enter a default alias and select one of the following types:

•E.164

•H.323

In the Stale Time area, you can arrange to delete clients that have not sent any registration requests for the specified interval. This area includes the following configurable parameters:

Item	Description
Delete stale clients	Select this checkbox to enable the stale timer feature.
Stale time (m)	Specify the length of the interval in minutes.

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