IBM 5155 Manual To Operations page 341

Communications Adapter Cable
Communications
Adapter
Connector Pin #
NC
2
3
4
5
6
7
8
NC
NC
11
NC
NC
NC
15
NC
17
18
NC
20
NC
22
23
NC
25
Name
Modem
Connector
Pin #
Outer Cable Shield
Transmitted Data
Received Data
Request to Send
Clear to Send
1
2
3
4
5
Data Set Ready
Signal Ground
(Inner Lead Shields)
Received Line Signal Detector
6
7
8
NC
NC
Select Standby
Transmitter Signal Element
Timing
11
NC
NC
NC
15
NC
Receiver Signal Element Timing 17
Test
18
NC
Data Terminal Ready 20
NC
Ring Indicator
22
Data Signal Rate Selector
23
NC
T est Indicate
25
January 1984
Communications Cable 7