Polycom 3725-76302-001LI manual By alias dial rule see The Default Dial Plan

DMA Operations Guide Call Server Settings

Table 10-1Fields on the Call Server Settings page (continued)

	Field	Description
	Allow calls to inactive	If this option is selected, the Call Server considers
	endpoints	inactive as well as active endpoints when attempting to
		resolve an address using the Dial registered endpoints
		by alias dial rule (see “The Default Dial Plan and
		Suggestions for Modifications” on page 246).
		Turning this option off can prevent the aliases of
		registrations that are no longer active from masking the
		aliases of endpoints registered to other call servers.
		This is useful in situations where an endpoint might
		have an active registration with one Call Server and an
		inactive registration with another (such as a mobile
		device that moves from a Call Server handling
		registrations through an SBC to a different Call Server
		in the network).
	Terminate calls based	If this option is selected, the Call Server terminates a
	upon failed responses	call if it sends an IRQ (Information Request) to the
	to IRQs	endpoint and receives either no response or an IRR
		(Information Request Response) containing an
		invalidCall field. This is the correct behavior according
		to the H.323 ITU Specification, and it prevents a call
		license from being used unnecessarily for a call that’s
		no longer active.
		Some endpoints (VVX prior to v.4.0.1, Sony PCS1,
		XG80, and G70, and possibly others) don’t properly
		handle IRQ/IRR messaging, causing active calls to be
		disconnected if this option is selected. To avoid this
		problem with such endpoints, leave this option off.
	Gatekeeper call mode	Direct call mode — The gatekeeper processes only
		H.225.0 RAS call control messages. The endpoints
		exchange other call signaling and media control
		messages directly, bypassing the gatekeeper.
		Routed call mode — The gatekeeper proxies all H.323
		signaling messages.
	Available bandwidth	Sets the maximum percentage of the available
	limit (percent)	bandwidth that can be allocated to a single call.
		If the requested bandwidth exceeds this value, the
		gatekeeper “downspeeds” (reduces the bit rate of) the
		call, but only to the user’s downspeed minimum.
		If there is insufficient bandwidth to comply with both this
		setting and the downspeed minimum, the call is
		rejected.
	Location request hop	The initial hop count the gatekeeper uses when it sends
	count	LRQs to neighbored gatekeepers.
	Location request	The number of seconds to wait for a response from a
	timeout (seconds)	neighbored gatekeeper.
240		Polycom, Inc.