Specifies the handling for Early media status. Available only when the Incoming Message Type is Progress or Alert. The available options for this filter are as follows: - Any - this setting will match an incoming message regardless of whether early media has or has not been negotiated
- Negotiated - this setting will match an incoming message only if early media has already been negotiated
- Not Negotiated - this setting will match an incoming message only if early media has not yet been negotiated
For example, Sonus SBC 1000/2000 can receive 183 Session Progress with SDP and a following 180 Ringing with SDP. Since the early media audio path has already been negotiated with the 183 Session Progress message, Sonus SBC 1000/2000 can strip the SDP from the 180 Ringing. This can be done to either a SIP or an ISDN call leg. In order to do this, you would set the value of the Early Media Status to Negotiated. As a result, the message translation rule will only match calls if the early media path has already been negotiated.You could also create a message translation rule that will match only if early media path has not been negotiated. | ) icon.