D 14049.01
07.2007
38
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
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Introduction
Getting
Started
System
Overview
System
Configuration
H.323 & SIP
Configuration
Registration
Control
Zones and
Neighbors
Call
Processing
Firewall
Traversal
Bandwidth
Control
Maintenance
Appendices
TANDBERG VIDEO COMMUNICATION SERVER
ADMINISTRATOR GUIDE
H.323 & SIP
Configuration
About Interworking
The VCS is able to act as a gateway between
SIP and H.323, translating calls from one
protocol to the other. This is known as
“interworking”.
By default, the VCS will act as a SIP-H.323
gateway but only if at least one of the
endpoints is locally registered.
You can add an additional option key that will
allow the VCS to act as SIP-H.323 gateway
regardless of whether the endpoints are
locally registered. Contact your TANDBERG
representative for further information.
In either case, you also always have the option
to disable interworking.
An interworking call is a traversal call, and will
therefore consume one traversal licence for
the duration of the call.
Interworking
Overview
Configuring Interworking
Interworking is enabled via:
VCS Configuration > Protocols > Interworking.
You will be taken to the Interworking page.
xConfiguration Interworking Mode
•
•
H.323 <-> SIP interworking mode
Determines whether or not the VCS will act as a gateway between SIP and H.323 calls.
Off: the VCS will not act as a SIP-H.323 gateway.
RegisteredOnly: the VCS will act as a SIP-H.323 gateway but only if at least one of the endpoints is
locally registered.
On: the VCS will act as SIP-H.323 gateway regardless of whether the endpoints are locally
registered. You must have the appropriate option key enabled to use this feature.
!
A call between two H.323 endpoints
each registered to a different VCS may
be routed in such a way that it is
interworked from H.323 to SIP and back to
H.323. (For example, if the two VCSs are only
able to connect via SIP.) In this case, the two
H.323 endpoints involved must support H.263
video. If they do not (for example, if H.263
has been disabled) the call will still be
established but it will be audio only.
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