Telebit WorldBlazer User Manual page 53

Table 8-1. RS-232 Connector Pin Assignments
Pin
EIA CCITT
Description
From To
Circuit Signal Modem Modem
1
AA
101 Protective Ground
X X
2
BA 103 Transmitted Data (TO)
X
3
BB 104 Received Data (RD)
X
4 CA 105 Request to Send (RTS)
X
5
CB 106 Clear to Send (CTS)
X
6
CC
107 Data Set Ready (DSR) X
7 AB 102 Signal Ground
X X
8
CF 109 Data Carrier Detected (DCD)
X
9
- - Reserved for Test
10
-
-
Reserved for Test
11 - - Unassigned
12 CI
122 DCE Signal Rate Select
X
13 SCB 121 Unassigned
14 SB A118 Unassigned
15 DB 114 DCE Transmit Signal Element
X
Timing
16 SBB 119 Unassigned
17 DO 115 Receiver Signal Element Timing
X
18 LL 141 Local Analog Loopback
X
19 SCA
120 Unassigned
X
20
CD 108.2 Data Terminal Ready (DTR)
X
21 RLlCG 140 Remote Digital Loopback
X
8-2 Interface Description 90257-01