Cisco CallManager Administration Guide, Release 3.3(2)
Transcoder Configuration
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Transcoder Configuration

Table Of Contents

Transcoder Configuration

Configuring a Transcoder

Updating a Transcoder

Copying a Transcoder

Resetting a Transcoder

Deleting a Transcoder

Transcoder Configuration Settings


Transcoder Configuration


The Media Resource Manager (MRM) has responsibility for resource registration and resource reservation of transcoders within a Cisco CallManager cluster. Cisco CallManager simultaneously supports registration of both the Media Termination Point (MTP) and Transcoder and concurrent MTP and transcoder functionality within a single call.

The maximum transcoding sessions per port is 24. The following list gives the supported transcoding capacity and sessions per port:

G711-G711 MTP: 24 (no DSP is involved)

G729-G729 MTP: 24 (no DSP is involved)

G711-G723 transcoding: 24

G711-G729 transcoding: 24

G711-GSM Full Rate (FR) transcoding: 24

G711-GSM Enhanced Full Rate (EFR) transcoding: 24

The Cisco CallManager invokes a transcoder on behalf of endpoint devices when the two devices are using different codecs and would normally not be able to communicate. When inserted into a call, the transcoder converts the data streams between the two disparate codecs to enable communications between them.

All Cisco CallManagers within a cluster can access transcoders through the Media Resource Manager (MRM), which manages the resources.

The MRM makes use of Cisco CallManager media resource groups and media resource group lists. The media resource group provides load balancing among resources. The media resource group list limits and orders access to media resources.

A transcoder control process gets created for each transcoder device that is defined in the database. Each transcoder registers with the MRM when it initializes. The MRM keeps track of the transcoder resources and advertises their availability throughout the cluster.

Use the following topics to configure transcoders:

Configuring a Transcoder

Updating a Transcoder

Copying a Transcoder

Resetting a Transcoder

Deleting a Transcoder

Transcoder Configuration Settings

Configuring a Transcoder

This section describes how to configure a transcoder.

Procedure


Step 1 Choose Service > Media Resource > Transcoder.

Step 2 Enter the appropriate settings as described in Table 29-1.

Step 3 Click Insert.

The window refreshes and shows specific information, including the status, for the transcoder you just configured. The transcoder should now appear in the list on the left side of the window.


Related Topics

Transcoder Configuration

Media Termination Point Configuration

Conference Bridge Configuration

Updating a Transcoder

Copying a Transcoder

Resetting a Transcoder

Deleting a Transcoder

Transcoder Configuration Settings

Updating a Transcoder

This section describes how to update a transcoder.

Procedure


Step 1 Choose Service > Media Resource > Transcoder.

Step 2 From the Transcoders list on the left side of the window, click the transcoder that you want to update.

The window refreshes and displays the transcoder that you selected.

Step 3 Update the appropriate settings as described in Table 29-1.

Step 4 Click Update.

A message displays that states that the transcoder must be reset before the changes will take effect.

Step 5 Click OK.

Step 6 Click the Reset button and then click OK to continue.


Related Topics

Transcoder Configuration

Media Termination Point Configuration

Conference Bridge Configuration

Configuring a Transcoder

Copying a Transcoder

Resetting a Transcoder

Deleting a Transcoder

Transcoder Configuration Settings

Copying a Transcoder

This section describes how to copy a transcoder.

Procedure


Step 1 Choose Service > Media Resource > Transcoder.

Step 2 From the Transcoders list, choose the transcoder that you want to copy.

The window refreshes and displays the transcoder that you selected.

Step 3 Click Copy.

The window refreshes again and displays the transcoder with a Copy of... name in the Current Transcoder field.

Step 4 Update the appropriate settings as described in Table 29-1.

Step 5 Click Insert.

The screen refreshes, and the new transcoder appears in the transcoder list on the left side of the window.


Related Topics

Transcoder Configuration

Media Termination Point Configuration

Conference Bridge Configuration

Configuring a Transcoder

Updating a Transcoder

Resetting a Transcoder

Deleting a Transcoder

Transcoder Configuration Settings

Resetting a Transcoder

This section describes how to reset a Transcoder.


Step 1 Choose Service > Media Resource > Transcoder.

Step 2 From the Transcoders list, choose the transcoder that you want to reset.

The window refreshes displaying the transcoder that you selected.

Step 3 Click Reset.

The Reset dialog box displays.

Step 4 Click OK.


Related Topics

Transcoder Configuration

Media Termination Point Configuration

Conference Bridge Configuration

Configuring a Transcoder

Updating a Transcoder

Copying a Transcoder

Deleting a Transcoder

Transcoder Configuration Settings

Deleting a Transcoder

This section describes how to delete a transcoder.


Note You cannot delete a transcoder that is assigned to a media resource group. To do so, you must first remove the transcoder from the media resource group(s) to which it is assigned.


Procedure


Step 1 Choose Service > Media Resource > Transcoder.

Step 2 From the Transcoders list, choose the transcoder that you want to delete.

The window refreshes and displays the transcoder that you selected.

Step 3 Click Delete.

A message displays that states that you are about to permanently delete this transcoder and that you cannot undo this action.

Step 4 If you want to continue, click OK or to cancel the deletion, click Cancel.

After the window refreshes, the transcoder that you deleted should no longer appear in the transcoder list.


Related Topics

Transcoder Configuration

Media Termination Point Configuration

Conference Bridge Configuration

Configuring a Transcoder

Updating a Transcoder

Copying a Transcoder

Transcoder Configuration Settings

Transcoders, Cisco CallManager System Guide

Transcoder Configuration Settings

Table 29-1 describes the transcoder configuration settings.

Table 29-1 Transcoder Configuration Settings

Field
Description

Transcoder Type

Choose the appropriate transcoder type: Cisco Media Termination Point Hardware or Cisco IOS Media Termination Point.

MAC Address

For Cisco media termination point hardware, enter a MAC address (must be 12 characters).

Device Name

For IOS transcoders, use the MAC address in the format xxxxxxxxxxxxMTP, where xxxxxxxxxxxx represents the MAC address of the IOS gateway.

Description

Enter a description (up to 50 characters), or leave blank to generate automatically from the MAC address or device name that you provide.

Device Pool

Choose a device pool. For more detailed information on the chosen device pool, click View Details.

Special Load Information

Enter any special load information into the Special Load Information field or leave blank to use default.


Related Topics

Configuring a Transcoder

Updating a Transcoder

Copying a Transcoder