Northern Telecom DMS-100 Series Installation And Maintenance Manual page 47

0
0
0 Rackmount DUs
0 ment (DTE) and a two-wire non-loaded loop.
0 on the loop using time compression multiplexing (TCM).
0 technology provides a data channel that is
0 data at a rate of 64 kbps with an 8 kbps signaling channel.
0 The RS-232C
0 one of three modes:
0 * synchronous
0 * asynchronous
0 * asynchronous autobaud
0 Transmission speeds are selectable up to 19.2 kbps.
0 chronous autobaud mode, the DU adapts to the speed of the DTE and
0 supports the following speeds:
0 * 50 bps
0 * 75 bps
0 * 110 bps
0 * 134.5 bps
0 * 150 bps
0 * 300 bps
0 * 600 bps
0 * 1200 bps
0 * 1800 bps
0 * 2000 bps
0 * 2400 bps
0 * 3600 bps
0 * 4800 bps
0 * 7200 bps
0 * 9600 bps
0 * 19200 bps
0 In the asynchronous autobaud mode, the
0 data with odd, even or no parity.
0 The V.35 rackmount
0 kbps, 56 kbps, or 64 kbps.
0 Transmission speeds are selected by setting DIP switches
0 circuit card.
0 Both the RS-232C and V.35 DUs transmit in full-duplex mode (half-
0 duplex mode is supported).
0 Rackmount DUs
0 shelf. The shelf accommodates up to 16 DUs and a
0 The data terminal
0 shelf. For a detailed description of the shelf and power
0 see Shelf and Power Supply Description on page 3-41.
0 connector on the rear of the DU plugs into the pins on the shelf
0 backplane. Typically, the rackmount DUs are located in the
0 tral office, in a computer room or wherever a high concentration
0
provide an interface between data terminal equip-
rackmount DUs can transmit data up to 19.2 kbps in
DUs can
are circuit packs that are housed in an equipment
equipment
Data is
capable
data unit
transmit data synchronously at 48
(DTE) connects to the rear of the
297-2121-226
VINTAGE 05.01
transmitted
The TCM
of handling
In the asyn-
can transmit
on the
power supply.
supply
A backplane
cen-
3-27