Maintenance Manual

Managing the built-in Gatekeeper
Displaying the built-in Gatekeeper Registration List 122
Displaying the built-in Gatekeeper Registration List
The MCU contains a built-in gatekeeper with which devices can register multiple IDs. IDs can be numbers, H.323 IDs
(e.g. Fredsendpoint) or prefixes.
Up to 25 devices can be registered without a feature key.
Note: The MCU can register with its own built-in gatekeeper. The MCU then counts as one registered device. See
Configuring H.323 gatekeeper settings.
Configuring the built-in Gatekeeper
To start the gatekeeper:
1. Go to Network > Services and select H.323 gatekeeper to open a port for the gatekeeper. (On the MCU, ports
are not open by default for security reasons.)
2. Go to Gatekeeper, select Enabled in the Status field and click Apply changes. If you attempt to enable the
built-in gatekeeper without opening the port, an error message is displayed.
Configuring Neighboring Gatekeepers
You can optionally configure the built-in gatekeeper with up to two neighboring gatekeepers. This means that if the
built-in gatekeeper receives a request (known as an Admission Request or ARQ) to resolve an ID to an IP address and
that ID is not currently registered with it then it will forward that request to its neighbor gatekeeper(s), as a Location
Request (LRQ). The built-in gatekeeper will then use the information received from the neighbor(s) to reply to the
original request.
You can also configure the behavior of the built-in gatekeeper on receipt of LRQs from another gatekeeper. It can:
■ send LRQs regarding unknown IDs to its neighbor(s)
■ reply to LRQs from other gatekeepers
■ accept LCFs (Locations Confirms) from non-neighboring gatekeepers
Refer to this table for assistance when configuring the built-in gatekeeper:
Field Field Description Usage Tips
Status Enables or disables the built-in gatekeeper. To use the built-in gatekeeper, you must
enable it here.
Cisco Systems, Inc. www.cisco.com
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