Asynchronous cable connections, Table f-2 – NETGEAR XM128 ISDN User Manual
Page 144
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Reference Guide for the Model XM128 ISDN Digital Modem
F-2
Serial Port Interface
Asynchronous Cable Connections
provides information about the asynchronous flow control cable connection.
22
125
CE
Ring indicator (RI).
‹
24
113
DA
Transmit clock signal (source: DTE).
?
25
142
Test indicator.
‹
Table F-2.
Asynchronous flow control cable connection
Modem
(DCE) DB25
Signal
To PC
(DTE) DB 9
To DCE
(Null) DB25
To
MAC Mini 8
To NeXT
68,040 Mini 8
2
TXD
3
3
3
3
3
RXD
2
2
5
5
4
RTS
7
5
1
6
5
CTS
8
4
2
8
6
DSR
6
20
7
Ground
5
7
4,8
4
8
CD (DCD)
1
20
2
20
DTR
4
6,8
1
1
22
RI
9
Table F-1.
Serial port interface (continued)
Pin number
ITU-TSS
signal name
EIA
signal name
Signal/pin description
Signal direction
DTE -DCE
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