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The IMG 2020 supports communicating with a gatekeeper for registration and discovery in an H.323 network. The External Gatekeeper object is created to configure the information needed to connect and communicate with a primary External H.323 Gatekeeper. Alternate gatekeepers can then be configured under the primary. Refer to the information below on how to configure this object.

Web GUI Page

Dialogic > External Network Elements > External Gatekeepers > New External Gatekeeper

Maximum Objects

One External Gatekeeper object can be created per External Gatekeepers object.

Related Topics and Dependencies

The External Gatekeeper object is configured under the External Gatekeepers object. Once created, the External Gatekeeper can be added to an H.323 channel group. This is achieved by right clicking on the H.323 Channel Group and selecting a New IP Network Element. Once the IP Network Element is created, the gatekeeper can be selected from the IP Network Element field.

External Gatekeepers

External Gatekeeper

H.323 Profile

Configure H.323 with GateKeeper

Configure H.323 without GateKeeper 

Field Descriptions

Name

The Name field identifies the external gatekeeper being configured. Click in the Name field and enter a name that identifies the Gatekeeper being configured.

Gatekeeper Auto Discovery

The Gatekeeper Auto Discovery field configures whether the IMG 2020 will automatically send a Gateway Request (GRQ) message to discover and register with the gatekeeper being configured or whether the discovery and registration process will need to be achieved manually.

Disable (Default) - The IMG 2020 automatically transmits a Gateway Request (GRQ) and Registration Request (RRQ) message to the gatekeepers being configured.

Enable - Automatic registration is disabled. To register with the External Gatekeeper, the Discover GK, Register with GK, andUnregister with GK buttons in the H.323 Signaling object will need to be used to discover and register.

Gatekeeper IP Address

The Gatekeeper IP Address field specifies the IP Address of the External Gatekeeper that the IMG 2020 will be communicating with. Click in this field and an enter the IP Address. If the IP address of the gatekeeper is not known, leave the Default IP address (224.0.1.41) and the IMG 2020 will broadcast for an available gatekeeper.

Profile

The Profile field has a drop down list of all the H.323 Profiles created under the H323 Profile object. The Profile field configures the various attributes/features that need to be associated with the Gatekeeper being created/configured. Select from the drop down menu the H.323 profile that will be associated with the External Gatekeeper the IMG 2020 will be communicating with.

Time to Live (sec)

The Time To Live field configures the number of seconds that the IMG 2020 should be considered active by the Gatekeeper. After the Time To Live parameter has expired, the H.323 endpoint will need to re-register with the Gatekeeper. The Time to Live parameter is normally controlled by the Gatekeeper but by configuring the Time to Live parameter on the IMG 2020, the IMG 2020 has some control over the parameter. Once configured, the Time To Live parameter is sent from the IMG 2020 (H.323 Endpoint) to the Gatekeeper in the Registration Request (RRQ) message when registering with the Gatekeeper. The Gatekeeper looks at this value and either accepts the received value or rejects it and sends back an overridden Time to Live value in the Registration Confirm (RCF) message. The Time to Live parameter value is entered in seconds and ranges from 0 to 655 seconds. Click in the Seconds field and enter the parameter value in seconds.

Monitoring Fields

Gatekeeper TTL value

Displays the Time To Live value that is returned from the gatekeeper in the Registration Confirm (RCF) message.

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