Unchannelized E1

The line supports a 2.048 Mbps bit stream with 1 or 2 time slots (Time slots 0 and optionally 16) used for framing and alarm and control signaling. Slot 16 may or may not be available depending on the Service Provider. In the unchannelized case, 30 or 31 of the 32 DS0s are used as a single serial bit stream of 1.920 Mbps or 1.984 Mbps respectively.