NEC Aspire S Manual page 199

Aspire S Hardware Manual
RS-232-C Pin Out Information
Direction of Signal Flow
( output or
DCE
RS-232-C (CTA, CTU
Connector Description or Modem)
8 DCD
3 RXD
2 TXD
20 DTR
6 DSR
4 RTS
5 CTS
7 GND
25-Pin RS-232-C
Connector
13 12 11 10 9 8 7 6 5 4 3 2 1
25 24 23 22 21 20 19 18 17 16 15 14
SMDR Printer
OR
PC
Figure 5-1: CONNECTING AN SMDR DEVICE
Section 5: Data and SMDR
input)
DTE
(PC or
Printer)
One-Pair Cross-Connect
To digital
station circuit
on ESIU PCB
25-Pair
Installation
Cable
RS-232-C
Cable (with CTA)
USB Cable
(with CTU)
RS-232 Null
Modem Cable
Aspire
Cabinet
Ethernet Cable
Section 5: Data and SMDR ◆ 5-5
YEL BLK
BLU-WHT
WHT-BLU
RED GRN
Cross
Connect
Block
625
Modular
Jack
Aspire Keyset
with CTA or
CTU Adaptor
5