Configuring Allowed Video Coder Groups
The Allowed Video Coders Groups table lets you configure up to five Allowed Video Coders Groups for SBC calls. Each Allowed Video Coders Group can be configured with up to 10 user-defined (string) video coders. An Allowed Video Coders Group defines a list of video coders that can be used when forwarding video streams to a specific SIP entity.
Allowed Video Coders Groups are assigned to SIP entities, using IP Profiles (see Configuring IP Profiles). The video coders appear in the SDP media type "video" ('m=video' line). Coders that are not listed in the Allowed Video Coders Group are removed from the SDP offer that is sent to the SIP entity. Only coders that are common between the coders in the SDP offer and the coders listed in the Allowed Video Coders Group are used. Thus, Allowed Video Coders Groups enable you to enforce the use of only specified coders. For more information, see Restricting Audio Coders.
The order of appearance of the coders listed in the Allowed Video Coders Group determines the priority (preference) of the coders in the SDP offer. The device arranges the SDP offer's coder list according to their order in the Allowed Video Coders Group. The priority is in descending order, whereby the first coder in the list is given the highest priority and the last coder, the lowest priority. For more information, see Prioritizing Coder List in SDP Offer.
The following procedure describes how to configure Allowed Video Coders Groups through the Web interface. You can also configure it through ini file [AllowedVideoCodersGroups] and [AllowedVideoCoders] or CLI (configure voip > coders-and-profiles allowed-video-coders-groups; configure voip > coders-and-profiles allowed-video-coders < group index/coder index>).
| ➢ | To configure an Allowed Video Coders Group: |
| 1. | Open the Allowed Video Coders Groups table (Setup menu > Signaling & Media tab > Coders & Profiles folder > Allowed Video Coders Groups). |
| 2. | Click New; the following dialog box appears: |
| 3. | Configure a name for the Allowed Video Coders Group according to the parameters described in the table below. |
| 4. | Click Apply. |
| 5. | Select the new row that you configured, and then click the Allowed Video Coders link located below the table; the Allowed Video Coders table opens. |
| 6. | Click New; the following dialog box appears: |
| 7. | Configure coders for the Allowed Video Coders Group according to the parameters described in the table below. |
| 8. | Click Apply. |
Allowed Video Coders Groups and Allowed Video Coders Tables Parameter Descriptions
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Parameter |
Description |
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Allowed Video Coders Groups Table |
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'Index' allowed-video-coders-groups <index> [Index] |
Defines an index number for the new table row. Note: Each row must be configured with a unique index. |
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'Name' coders-group-name [Name] |
Defines a descriptive name, which is used when associating the row in other tables. The valid value is a string of up to 40 characters. Note:
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Allowed Video Coders Table |
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'Index' allowed-video-coders <group index > coder index> [AllowedVideoCodersIndex] |
Defines an index number for the new table row. Note: Each row must be configured with a unique index. |
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'User Define Coder' user-define-coder [UserDefineCoder] |
Defines a user-defined coder. The valid value is a string of up to 24 characters (case-insensitive). For example, "HD.123" (without quotation marks). Note: Each coder can be configured only once per Allowed Video Coders Group. |
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