Power supply, Eia signals supported – Nortel Networks Circuit Card User 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).