Specifications

Section 5: Data and SMDR
Aspire S Hardware Manual Section 5: Data and SMDR ◆ 5-5
5
Figure 5-1: CONNECTING AN SMDR DEVICE
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
DCE
(CTA, CTU
or Modem)
Direction of Signal Flow
( output or input)
DTE
(PC or
Printer)
Description
RS-232-C Pin Out Information
RS-232-C
Connector
DCD
RXD
TXD
DTR
DSR
RTS
CTS
GND
8
3
2
20
6
4
5
7
RS-232-C
Cable (with CTA)
OR
PC
SMDR Printer
625
Modular
Jack
BLKYEL
RED
GRN
BLU-WHT
WHT-BLU
One-Pair Cross-Connect
To digital
station circuit
on ESIU PCB
25-Pair
Installation
Cable
Cross
Connect
Block
Aspire Keyset
with CTA or
CTU Adaptor
0893100 - 126
USB Cable
(with CTU)
Aspire
Cabinet
Ethernet Cable
RS-232 Null
Modem Cable