The connection type for this system connection. fullDuplex (0) Bi-directional connection from Source port to Destination port and vice-versa. broadcastConnection (1) One directional connection from Source to Dest ports. broadcastMaster (2) Input connection from Source port to backplane only. listenSrc (3) Output connection from backplane to Destination port. Must be configured to 'listen' to an active Source port. listenDest (4) Output connection from backplane to Destination port. Must be configured to 'listen' to an active Dest port. vcmp (8) Voice Compression - Applicable to DNX-1u supporting Transcoder hardware. Provides cross-connect capability between uncompressed source and compressed destination. subChannel (9) Applicable to DNX-1u supporting Transcoder hardware. Connection allowing the user to map source's compressed bit group to the destination's bit group. subRate (10) Sub-rate level switching connection that must use ConnectionSpeed of 32k and must specify if high nibble or low nibble timeslot bits are used for both Src and Dest.