Table 2. Signals And Pinouts: Eia-423/232, -530 Protocols And Eia-449/42 And V.35 Adapters - Canoga Perkins 2370 User Manual

The V.35 interface signals follow the EIA-423 and EIA-232 protocols with minor changes, including
these three end-to-end control leads:
•
RTS to DCD
•
DTR to RI
DSR indicates that the modem is ready to receive data. TM is On only when loopback is active on
either or both modems.

Table 2. Signals and Pinouts: EIA-423/232, -530 Protocols and EIA-449/42 and V.35 Adapters

Signal Name
Frame Ground
Transmit Data
Receive Data
Request to Send
Clear to Send
Data Set Ready
Signal Ground
Data Carrier Detect
Secondary RC
Secondary DCD
Secondary TT
Secondary DCD
Secondary CTS
Secondary TD
Transmit Clock
Secondary RD
Receive Clock
Local Loopback
Secondary RTS
Data Terminal Ready
Remote Loopback
Ring Indicator
Data Signal Rate Selector In
Terminal Timing
Test Mode
3-2
Path EIA- DB-25
423/232 Pin
Signal
FG 1
In TD 2
Out RD 3
In RTS 4
Out CTS 5
Out DSR 6
SG 7
Out DCD 8
Out
Out
In
Out SDCD 12
Out SCTS 13
In STD 14
Out SCT 15
Out SRD 16
Out SCR 17
In LL 18
In SRTS 19
In DTR 20
In RL 21
Out RI 22
DSRS 23
In SCTE 24
Out TMA 25
Model 2370 Model User Manual
EIA-530 DB-25 EIA-
Signal Pin 449/422
Signal
FG 1 SHLD
TDA 2 SD
RDA 3 RD
RTSA 4 RS
CTSA 5 CS
DSRA/B 6/22 DM
SG 7 SG
DCDA 8 RR
RXCB 9 RT
DCDB 10 RR
SCTEB 11 TT
TXCB 12 ST
CTSB 13 CS
TDB 14 SD
TXCA 15 ST
RDB 16 RD
RXCA 17 RT
LLA 18 LL
RTSB 19 RS
DTRA/B 23/20 TR
RLA 21 RL
DM
TR
SCTEA 24 TT
TMA 25 TM
DC-37 CCITT V.35
Pin Circuit Pin
1 101 A
4 103 P
6 104 R
7 105 C
9 106 D
11 107 E
19 102 B
13 109 F
26 115 V
31
35 113 U
23 114 Y
27
22 103 S
5 114 AA
24 104 T
8 115 X
10 141 L
25
12 108 H
14 140 N
29 125 J
30
17 113 W
18 142 NN