Nortel Networks Circuit Card - Manual (Page 504)

Page 504 of 906 NT7D16 Data Access card
553-3001-211 Standard 3.00 August 2005
Power supply
Be sure that all power requirements are met before installing the DAC.
Operation may be affected by improper power and environmental conditions.
EIA signals supported
The DAC supports a subset of the standard signals. Only 8 leads can be
brought through the backplane connector for each port, totaling 48 leads for
each card slot. Table 165 lists the EIA signals supported on this card.
Table 165
EIA signals supported (RS-232-C)
EIA
DB-25
Pin Signal
abbreviation
Description
DCE
mode DTE
mode
BA 2 TD Transmitted Data In Out
BB 3 RD Received Data Out In
CB 5 CTS Clear To Send Out In
CC 6 DSR Data Set Ready Out In
AB 7 GND Signal Ground — —
CF 8 DCD Carrier Detect Out In
CD 20 DTR Data Terminal Ready In Out
CE 22 RI Ring Indicator Out In
Note: RS-422 leads supported are: Tx (transmit) and Rx (receive).