Eia-232-D Pin Assignments - Paradyne Comsphere 3920Plus Installation And Operation Manual

COMSPHERE 392xPlus Modems

EIA-232-D Pin Assignments

Table C-1 lists the EIA-232-D pin assignments for the modem.
EIA
Pin Name
Circuit
1 — AA
2 TXD BA
3 RXD BB
4 RTS CA
5 CTS CB
6 DSR CC
7 SG AB
8 LSD CF
9 +12V —
10 –12V —
11 — —
12 CT112 CI
13 — —
14 — —
15 TXC DB
16 — —
17 RXC DD
18 CT141 LL
20 DTR CD
21 CT140 RL
22 RI CE
23 CT111 CH
24 XTXC DA
25 TEST TM
C-2
Table C-1
EIA-232-D Pin Assignments
Signal
CCITT
Source
101 — Shield
103 DTE Transmit Data
104 DCE Receive Data
105 DTE Request-to-Send
106 DCE Clear-to-Send
107 DCE Data Set Ready
102 — Signal Ground
109 DCE Line Signal Detect
— — Reserved for test purposes (may be used to drive one
RS-232 load)
— — Reserved for test purposes (may be used to drive one
RS-232 load)
— — Unassigned
112 DCE Data Signal Rate Select
— — Reserved for future function
— — Reserved for future function
114 DCE Transmit Clock
— — Reserved for future function
115 DCE Receive Clock
141 DTE Local Loopback
108 DTE Data Terminal Ready
140 DTE Remote Loopback
125 DCE Ring Indicator
111 DTE Data Rate Selector
113 DTE External Clock
142 DCE Test Mode
April 1995
Circuit Function
3920-A2-GN31-10