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Cisco CallManager Administration Guide, Release 3.1(2)
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Index
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Preface
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Introduction
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Server Configuration
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Cisco CallManager Configuration
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Cisco CallManager Group Configuration
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Date/Time Group Configuration
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Device Defaults Configuration
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Region Configuration
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Device Pool Configuration
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Enterprise Parameters Configuration
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Location Configuration
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Auto-Registration Configuration
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Partition Configuration
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Calling Search Space Configuration
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Route Filter Configuration
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Route Group Configuration
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Route List Configuration
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Route Pattern Configuration
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Translation Pattern Configuration
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External Route Plan Wizard
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Special Characters and Settings
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Route Plan Report
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Cisco Messaging Interface Configuration
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Cisco TFTP Configuration
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Cisco WebAttendant Configuration
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Conference Bridge Configuration
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Media Termination Point Configuration
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Music On Hold Configuration
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Media Resource Group Configuration
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Media Resource Group List Configuration
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Service Parameters Configuration
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Transcoder Configuration
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Starting and Stopping Services
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Call Park Configuration
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Call Pickup and Group Call Pickup Configuration
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Cisco IP Phone Services Configuration
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Device Configuration
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CTI Route Point Configuration
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Cisco Voice Mail Configuration
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Device Profile Configuration
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Gatekeeper Configuration
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Gateway Configuration
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Cisco IP Phone Configuration
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Phone Button Template Configuration
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Adding a New User
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Searching the Global Directory
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Plugin Configuration
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Cisco TAPI Service Provider Installation and Configuration
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Cisco JTAPI Installation and Configuration
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Personal Directory
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Feedback
Table Of Contents
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 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:
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G711-G711 MTP: 24 (no DSP is involved)
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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.
Transcoders are accessible by all Cisco CallManagers within a cluster through the Media Resource Manager (MRM). The MRM determines the number of transcoders needed for a call and allocates the appropriate number of connections.
The MRM makes use of Cisco CallManager media resource groups and media resource group lists. The media resource group list allows transcoders to communicate with other devices in the assigned media resource group, which in turn, provides management of resources within a cluster.
A transcoder control process is created for each transcoder device 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:
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Configuring a Transcoder
This section describes how to configure a transcoder.
Procedure
Step 1
Step 2
Step 3
The window refreshes showing 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
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Updating a Transcoder
This section describes how to update a transcoder.
Procedure
Step 1
Step 2
The window refreshes displaying the transcoder you selected.
Step 3
Step 4
A message displays stating that the transcoder must be reset before the changes will take effect.
Step 5
Related Topics
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Copying a Transcoder
This section describes how to copy a transcoder.
Procedure
Step 1
Step 2
The window refreshes displaying the transcoder you selected.
Step 3
The window refreshes again and displays the transcoder with a Copy of... name in the Current Transcoder field.
Step 4
Step 5
The screen refreshes and the new transcoder appears in the transcoder list on the left side of the window.
Related Topics
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Resetting a Transcoder
This section describes how to reset a Transcoder.
Step 1
Step 2
The window refreshes displaying the transcoder you selected.
Step 3
The Reset dialog box displays.
Step 4
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Deleting a Transcoder
This section describes how to delete a transcoder.
Procedure
Step 1
Step 2
The window refreshes, displaying the transcoder you selected.
Step 3
A message displays stating that you are about to permanently delete this transcoder and that you cannot undo this action.
Step 4
After the window refreshes, the transcoder you deleted should no longer appear in the transcoder list.
Related Topics
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Transcoder Configuration Settings
Table 31-1 describes the transcoder configuration settings.
Related Topics