List the two primary functions of a gatekeeper in an H.323 network.

Gatekeepers provide call routing with a centralized dial plan and CAC.

What is a gatekeeper zone?

A gatekeeper zone is used to logically group H.323 devices that an individual gatekeeper controls.

What is a technology prefix?

A technology prefix is an optional H.323 feature that the gatekeeper uses to group gateways by type or class or to define a pool of gateways.

Where is bandwidth management initially done?

Bandwidth management is initially done when processing an ARQ. You can modify it later during the call with a BRQ.

What is another name for a directory gatekeeper?

Another name for a directory gatekeeper is a hierarchical gatekeeper.

What is GUP, and what is it used for?

GUP is the Gatekeeper Update Protocol. It uses RAS messages to provide updates to alternate gatekeepers when using gatekeeper clustering.