User`s manual

Mediant 1000
H.323 User's Manual 72 Document #: LTRT-83401
Table 5-4: Gatekeeper Parameters (continues on pages 70 to 73)
Parameter Description
RAI High Threshold
[RAIHighThreshold]
High Threshold (in percentage) that defines the gateway‘s busy endpoints.
The range is 0 to 100.
The default value is 90%.
When the percentage of the gateway‘s busy endpoints exceeds the value
configured in High Threshold, the gateway sends RAI message with
‘almostOutOfResources = TRUE’ and an SNMP ‘acBoardCallResourcesAlarm’
Alarm Trap with a ‘major’ Alarm Status.
Note: The gateway’s available Resources are calculated by dividing the number of
busy endpoints by the total number of available gateway endpoints.
RAI Low Threshold
[RAILowThreshold]
Low Threshold (in percentage) that defines the gateway‘s busy endpoints.
The range is 0 to 100.
The default value is 90%.
When the percentage of the gateway’s busy endpoints falls below the value
defined in Low Threshold, the gateway sends RAI message with
‘almostOutOfResources = FALSE’ and an SNMP ‘acBoardCallResourcesAlarm’
Alarm Trap with a ‘cleared’ Alarm Status.
RAI Loop Time
[RAILoopTime]
Time interval (in seconds) that the gateway checks for resource availability.
The default is 10 seconds.
Enable Pre-Grant ARQ
[EnablePregrantARQ]
Disable [0] = Disabled (default).
Enable [1] = Enables the H.323 pre-granted ARQ mechanism.
If enabled, when an endpoint registers with a Gatekeeper, the Gatekeeper can
pre-grant admission requests to that endpoint, enabling it to establish calls without
applying to the Gatekeeper for permission, thereby reducing call setup time.
Gateway Registration Type
[GWRegistrType]
Gateway registration encoding type. This defines the encoding type of the phone
numbers that is used when the gateway registers these numbers with a
Gatekeeper. You can select:
E.164 [0] (default)
H323-ID [1]
E.164 and H323-ID [2]
NPI/TON from Table [3]
NPI/TON and H323-ID [4]
For detailed information on the available methods the Mediant 1000 gateway
registers with a Gatekeeper, refer to Section
8.4 on page 263.
For detailed information on the Registration Prefixes Table, refer to Section
5.5.6
on page 112.
Register as Terminal
[IsTerminal]
No [0] = Gateway registers and acts as a standard gateway (default).
Yes [1] = Gateway registers as an H.323 terminal with multiple aliases (up to 24).
In all gateway messages, the terminal type value is set to terminal.
Enable Gatekeeper Auto
Discovery
[EnableGKAutoDiscovery]
Enables / disables the automatic Gatekeeper discovery mechanism.
Disable [0] = Disabled (default).
Enable [1] = Enabled.
Note: When Automatic Discovery is enabled, the redundant Gatekeeper
mechanism is disabled.
Gatekeeper Auto Discovery
IP Address
[GKAutoDiscoveryIP]
The IP address to which a Gatekeeper Request (GRQ) is sent. Normally, this is a
Multicast address used to distribute the request to a large number of known
Gatekeepers.
When not configured or configured to 0, the well-known Discovery Multicast
Address (224.0.1.41) is used.
Timers
Registration Time [sec]
[RegistrationTime]
Time in seconds between registrations to the Gatekeeper.
The default value is 180. The valid range is 10 to 2000000.
Note: This setting must match the configuration settings on your Gatekeeper.