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D14049.05
February 2009
Grey Headline
(continued)
TANDBERG
VIDEO COMMUNICATIONS SERVER
ADMINISTRATOR GUIDE
Introduction
Getting started
Overview and
status
System
configuration
VCS
configuration
Zones and
neighbors
Call
processing
Bandwidth
control
Firewall
traversal
Appendices
Applications
Maintenance
Zones
Zone profile
Determines the configuration of the
Advanced
settings for this zone. The options are:
Default
: the VCS will use the default values for these settings.
Microsoft Office Communications Server 2007
: the VCS will automatically select the configuration
settings required for connections to a Microsoft OCS 2007 server. Refer to the
relevant TANDBERG
VCS Deployment Guide
for full details on how to configure the VCS and Microsoft OCS 2007 to
enable the two systems to work together.
Custom
: enables you to configure each Advanced setting individually.
!
The following
Custom
settings available under the
Advanced
section should not be changed
except on the advice of TANDBERG customer support.
Searches are automatically responded to
Determines what happens when the VCS receives a SIP search that originated as an H.323 search,
destined for a system that was located via this zone. The default is
Off
.
Off
: a SIP OPTION or SIP INFO message will be sent to the system.
On
: searches will be responded to automatically, without being forwarded to the system.
!
This option should normally be left as the default
Off
. However, some systems such as
Microsoft Office Communications Server (OCS) 2007 will not accept SIP OPTION messages,
so for these zones this should be set to
On
. If you do change this to
On
, you must also
configure pattern matches to ensure that only those searches that actually match endpoints in this
zone are responded to. If you do not, the search will not continue to other lower-priority zones, and
the call will be forwarded to this zone even if it cannot support it.
Empty INVITE allowed
Determines whether the VCS will generate a SIP INVITE message with no SDP to send via this zone.
INVITES with no SDP mean that the destination device is asked to initiate the codec selection, and
are used when the call has been interworked locally from H.323. The default is
On
.
On
: SIP INVITEs with no SDP will be generated and sent to systems located via this zone.
Off
: SIP INVITEs will be generated and a pre-configured SDP will be inserted before the INVITEs are
sent to this system.
!
In most cases this option should normally be left as the default
On
. However, some systems
such as Microsoft OCS 2007 will not accept invites with no SDP, so for these zones this
should be set to
Off
.
The settings for the pre-configured SDP are configurable using the
xConfiguration Zones
Zone [1..200] DNS Interworking SI
P
commands. They should only be changed on
the advice of TANDBERG customer support.
SIP poison mode
On
: SIP requests sent to systems located via this zone will be 'poisoned' such that if they are
received by this VCS again they will be rejected.
Off
: SIP requests sent out via this zone that are received by this VCS again will not be rejected; they
will be processed as normal.
SIP SDP attribute line limit mode
Determines whether requests containing SDP sent out to this zone will have the length of
a=fmtp
lines restricted.
On
: the length will be truncated to the maximum length specified by the
SIP SDP attribute line limit
length
setting.
Off
: the length will not be truncated.
!
The
SIP SDP attribute line limit
option should normally be left as the default of
Off
. However,
some systems such as Microsoft OCS 2007 cannot handle attribute lines longer than 130
characters, so it must be set to On for connections to these systems.
SIP SDP attribute line limit length
If
SIP SDP attribute line limit mode
is set to
On
, sets the maximum line length of
a=fmtp
SDP lines.
Configuring DNS zones (cont.)
