A voice class codec is the coding scheme used for outgoing calls. VRC allows the administrator to select a valid voice encoding/decoding scheme from its list.
Use this procedure to delete voice class codecs from a managed region.
You must be in the Design View to delete a voice class codec.
Expand the dial plan tree to view all components.
Locate the region you want to delete a voice class codec from.
Click the Voice Class Codecs tab. The window displays the regions and their associated voice class codecs.
Select the voice class codec you want to delete.
Right-click and choose Delete from the menu.
You are asked to confirm your decision. Click OK.
The voice class codec is deleted from the region.
Click Cancel to cancel the procedure.