19.2.1.2. Notes concerning Direct Media Connections DMC 
- The Direct Media Connection will be switched in the two-party call state, that means in the basic call and the simple consultation call. A DMC will also be switched if the call is set up via a feature like call forwarding or picking up a group call or if a secondary line answers a keyset call. A DMC is also switched for conference calls.
- If the involved parties aren‘t in a two party connection the IP/TDM conversion and the switching via the TDM switching network (MTS) is executed.
- If a Direct Media Connection is established the connection path via the MTS switching network for multiple IP/TDM conversion (Master Connection) has to stay switched in parallel to the direct IP connection so that immediately after termination of the two party call state the MTS with its capabilities for tones and conferencing is available for any feature control by call processing.
- DMCs are established also for Fax/Modem connections.