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Chapter 3 – Related MultiVOIP Setup Parameters 
62 
Multi-Tech Systems, Inc. Avaya Communication Manager Guide  
 
Network Parameter Definitions (cont’d) 
Field Name 
Values 
Description 
Configuration 
Parameters (Cont’d) 
 
Call IRQ 
Interval 
 
The interval, in seconds, between IRQ messages sent by the Gatekeeper 
to query the status of calls. IRQ messages are sent to all online 
endpoints registered as dynamic and having ongoing calls in order to 
verify that the calls are still ongoing. The number you set determines 
the delay between two IRQ messages to the same endpoint regarding 
the same call. Choosing the desired delay should take into account the 
following factors: 
IRQ messages add to the traffic already present over the network, and 
the shorter the delay, the more IRQ messages are sent. However, the 
longer the delay, the longer it takes for the Gatekeeper to detect calls 
that are stale. 
The delay parameter relates to the interval between two IRQ messages 
per one call, so the actual number of the IRQ messages the Gatekeeper 
creates during this interval should be multiplied by the number of 
ongoing calls registered dynamically. 
To disable the IRQ polling, set this value to zero. 
The effective IRQ interval cannot fall below three times the RAS 
timeout. 
IRQ messages will not be sent at a rate exceeding 20 per second.  
Default 
Distance 
 
The “distance” (number device-to-device hops that a call must traverse 
between endpoints) allowed for endpoints which are only dynamically 
registered, such as an endpoint with no predefined values. This 
distance is compared to the distances of the neighbor gatekeepers and 
to the multicast distance in order to determine if an LRQ can be sent on 
behalf of the requesting endpoint.  
NOTE: The neighboring gatekeeper feature is not supported in the current 
software version.
 
Out-of-Zone 
Distance 
 
The “distance” (number device-to-device hops that a call must traverse 
between endpoints) allowed for an out-of-zone endpoint that is making 
a call through the Gatekeeper. This distance is compared to the 
distances of the neighbor gatekeepers and to the multicast distance in 
order to see if an LRQ can be sent on behalf of the requesting endpoint. 
NOTE: The neighboring gatekeeper feature is not supported in the current 
software version.
 
Multicast 
Distance 
 
The “distance” (number device-to-device hops that a call must traverse 
between endpoints)  associated with sending an LRQ by multicast. 
NOTE: The neighboring gatekeeper feature is not supported in the current 
software version.
 
GK-ID 
 
The name of the Gatekeeper. The terminals identify the Gatekeeper by 
this name during the discovery process. The Gatekeeper responds only 
to Discovery requests that either contain a matching Gatekeeper 
identifier or have no Gatekeeper identifier. 
Update 
(button) 
-- 
Click to update information in the “Status Information” fields of the 
Network Parameters screen.