A media class is a collection of Codecs. Using the media classes function controls the negotiation of the codecs for the call.
View Media Classes
Select the Telephony > Media Classes subdirectory for the VX node and view contents at the Media Classes screen.
Add Media Classes
Insert a new line in the Media Classes screen, then double-click the line to present the Edit Media Class dialog box.
Modify Media Classes
Double-click on table line in the Media Classes screen, to present the Edit Media Class dialog box.
Identifier for media class
Enter an optional text description
Mid-call DTMF Digits
Specifies whether to send digits as inband audio or RFC 2833
RFC2833 End Indications
Configures the number of RFC-2833 end packets for all DTMF digits sent from VX to external users
RTP Payload Redundancy
When enabled, redundant payload is used to improve audio quality. When disabled, redundancy is not negotiated.