Paradyne HotWire 7974 User Manual page 151

7970-A2-GB20-00
Table C-7. RS-449 Cable Interface
Signal
Shield
Signal Ground
Receive Ground
Send Common
Send Data
Receive Data
Request to Send
Clear to Send
Receiver Ready
Data Mode
Terminal Ready
Terminal Timing
Send Timing
Receive Timing
Local Loopback
Remote Loopback
Test Mode
August 1999
Cables and Pin Assignments
Circuit ITU-T
Mnemonic Number
— —
SG 102A
RC 102B
SC —
SD 103
RD 104
RS 105
CS 106
RR 109
DM 107
TR 108/1, /2
TT 113
ST 114
RT 115
LL 141
RL 140
TM 142
Direction Pin
— 1
— 19
— 20
— 37
To DSU/CSU 4 (A)
22 (B)
From DSU/CSU 6 (A)
24 (B)
To DSU/CSU 7 (A)
25 (B)
From DSU/CSU 9 (A)
27 (B)
From DSU/CSU 13 (A)
31 (B)
From DSU/CSU 11 (A)
29 (B)
To DSU/CSU 12 (A)
30 (B)
To DSU/CSU 17 (A)
35 (B)
From DSU/CSU 5 (A)
23 (B)
From DSU/CSU 8 (A)
26 (B)
To DSU/CSU 10
To DSU/CSU 14
From DSU/CSU 18
C-11