Managing the CX Video Gateway
Dialogic® Vision™ CX Video Gateway Administration Manual
Specifying video transcoding in a call leg
If you have enabled video transcoding for the CX Video Gateway on the Resources
page in the Configuration menu, transcoding will be used only when incompatible
video codec characteristics are detected by the CX Video Gateway. If needed, you
can force every call to use video transcoding through the routing entry in the
gateway routing table.
To force video transcoding for every call, create or edit the routing entry in the
gateway routing table as follows:
Step
Action
1
Access the Vision™ Console for your video transcoder system or for your CX Video Gateway, as
described in
Accessing the Vision Console
on page 33.
2
Click
Gateway routes
on the Provisioning menu, and the Call routing table page is displayed.
3
Click
New
to define a new routing rule or click
Edit
to edit an existing routing rule.
The Edit Routing Entry page is displayed.
4
Select
Force
for the Video transcoder field.
Complete or edit other fields as needed.
5
Click
Apply
.
The Vision™ Console adds the new rule or applies the change to the routing table.
If a syntax error occurs in the new routing rule, the Vision™ Console displays an error
message. Correct the rule, and click
OK
.
When
Force
is specified for the routing entry, video transcoding is inserted in the
video path regardless of the negotiated video codec on either side. When
Dynamic
is specified for the routing entry, video transcoding only applies to calls with different
video codec characteristics such as a different codec or a different picture frame. For
more information on routing tables, see
Understanding the gateway routing table
on
page 64 and
Routing table expressions
on page 68.
The benefits of always enabling video transcoding in the path are as follows:
•
Enables the gateway to respond to a VFU request without relying on the
remote endpoint.
•
For MPEG-4 codec in particular, ensures that the DCI information will not
change in the middle of the session between a 3G endpoint and an RTP
endpoint.
Video transcoder logging
Video transcoder log files are created in the
/opt/nms/video/log
s directory on the
video transcoder system.
Note:
Video transcoder log files are intended for use by Dialogic Services and
Support.
The default logging level is ERROR. The logging level is configurable on the
Maintenance page, Operations menu of the Vision™ Console. The logging levels are
identical to the Call Server system log levels described in
Logging levels
on page 84.
The following information is provided to help you manage your system requirements
according to the number of video transcoder resources in use in your environment:
•
The maximum size of each log file is 10 MB.
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