TANDBERG Gatekeeper User Manual page 30

TANDBERG Gatekeeper User Manual
Figure 10: Configuring a pipe
Pipes may be shared between one or more links. This is used to model the situation where a
site communicates with several other sites over the same broadband connection to the Internet.
Each link may have up to two pipes associated with it. This is useful for modeling two sites, each
with their own broadband connection to the Internet backbone. Calls between zones or subzones
consume bandwidth from each zone and any pipes on the link between them.
When a Gatekeeper is neighbored with another Gatekeeper or a Border Controller, the neighbor
is placed in its own zone. This allows you to control the bandwidth used by calls to and from
endpoints controlled by the other Gatekeeper. Sometimes you may place and receive calls
to Gatekeepers you are not neighbored with (See section 7). These Gatekeepers, and any
unregistered endpoints reached by dialing their IP address, are placed in the Default Zone.
If bandwidth control is in use, there are two possible behaviors when a call cannot be placed at
the bandwidth requested. By default the call will be connected at a reduced bandwidth (down-
speeding), assuming that there is some bandwidth still available. Optionally the call may be
rejected if it cannot be placed at the requested bandwidth. This option is controlled through the
web interface of the Gatekeeper by navigating to Gatekeeper Configuration Gatekeeper (Figure
11) or through the following command line instructions:
Figure 11: Configuring down-speeding options
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