Paradyne COMSPHERE 3800PLUS User Manual page 184

COMSPHERE 3800Plus Modems
EIA-232-D Pin Assignments
Table E-1 lists the EIA-232-D pin assignments for the
modem.
RS-232 Pin Name
1 —
2 TXD
3 RXD
4 RTS
5 CTS
6 DSR
7 SG
8 LSD
9 +10V
10 –10V
11 —
12 CT112
13 —
14 —
15 TXC
16 —
17 RXC
18 CT141
20 DTR
21 CT140
22 RI
23 CT111
24 XTXC
25 TEST
E-2
Table E-1
EIA-232-D Pin Assignments
EIA
ITU-T
Circuit Source
AA 101
BA 103
BB 104
CA 105
CB 106
CC 107
AB 102
CF 109
— —
— —
— —
CI 112
— —
— —
DB 114
— —
DD 115
LL 141
CD 108
RL 140
CE 125
CH 111
DA 113
TM 142
October 1998
Signal
Circuit Function
— Shield
DTE Transmit Data
DCE Receive Data
DTE Request-to-Send
DCE Clear-to-Send
DCE Data Set Ready
— Signal Ground
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
DCE Data Signal Rate Select
— Reserved for future function
— Reserved for future function
DCE Transmit Clock
— Reserved for future function
DCE Receive Clock
DTE Local Loopback
DTE Data Terminal Ready
DTE Remote Loopback
DCE Ring Indicator
DTE Data Rate Selector
DTE External Clock
DCE Test Mode
3980-A2-GB30-40