D 14049.01
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TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Bandwidth Control
Introduction Getting
Started
System
Overview
System
Configuration
H.323 & SIP
Configuration
Registration
Control
Zones and
Neighbors
Call
Processing
Firewall
Traversal
Bandwidth
Control Maintenance Appe ndices
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
Bandwidth
Control
Pipes are used to restrict the ban dwidth of a link. When a pipe is ap plied to a link, it will restrict
the bandwidth of calls made bet ween the two nodes of the link - t he restrictions will apply to c alls
in either direction.
Normally a single pipe would be ap plied to a single link. However, one or mor e pipes may be
applied to one or more links, depen ding on how you wish to model your net work.
One Pipe, One Link
Applying a single pipe to a singl e link is useful when you wish to apply sp ecific limits to calls
between a subzone and another sp ecific subzone or zone.
One Pipe, Two or More Links
Each pipe may be applied to multip le links. This is used to model the situ ation where one site
communicates with several oth er sites over the same broadban d connection to the Interne t. A
pipe should be configured to rep resent the broadband con nection, and then applied to all t he
links. This will allow you to configure th e bandwidth options for calls i n and out of that site.
Two Pipes, One Link
Each link may have up to two pipes asso ciated with it. This is used to mod el the situation where
the two nodes of a link are not direc tly connected, for example t wo sites that each have their own
broadband connection to th e Internet. Each connect ion should have its own pipe, meani ng that a
link between the two nodes sh ould be subject to the bandwi dth restrictions of both pip es.
Automatically Created Links
Whenever a new subzone or zone is creat ed, links are automatically crea ted as follows:

New zone/subzone type Default links are created to...

Subzone Default Subzone and Travers al Subzone
Neighbor zone Default Subzone and Traversal Subzo ne
DNS Zone Default Subzone and Traversal Subzo ne
ENUM Zone Default Subzone and Traversal Subzo ne
Traversal Client Zone Traversal Subzone
Traversal Server Zone Traversal Subzone
Default LinksApplying Pipes to Links
Bandwidth Control
!
Calls will fail if links are not configur ed correctly.
Pre-Configured Links
The VCS is shipped with the Defa ult Subzone, Traversal Subzone and Def ault Zone already
created, and with links pre- configured between t he three. You may delete or amend these d efault
links if you need to model restric tions of your network.
If any of these links have been deleted, t hey may all be automatically rest ored via:
xCommand DefaultLinksAdd
To restore these links via the web inter face, you must do so manually. See Crea ting Links for
instructions on how to do this.
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About Default Links
If a subzone has no links configured, t hen endpoints within the subzo ne will only be able to call
other endpoints within the sa me subzone. For this reason, the VCS co mes shipped with a set
of pre-configured li nks and will also automatically cre ate new links each time you create a ne w
subzone.
You can edit any of these default links in the s ame way you would edit manually co nfigured
links. See Editing Links for more inf ormation.