The Loop-V4300 Mini DACS E1/T1 converter provides both DS0 and n x 64 Kbps cross-connect between any T1 and E1 ports and E1 to T1 format conversion functions. An E1 to T1 conversion includes a line format, A-law to mu-law conversion, and signaling bits association. The Loop-V4300 also supports a DTE port operating from 56 Kbps to 1984 Kbps. This unit is suitable for applications involving 2 or 4 ports. The Loop-V4300 also supports in-band management: management data and user data is carried in a DS0 time slot, traversing national networks.