60 CHAPTER A: OPTIONAL CABLE SPECIFICATIONS
EIA/TIA-449 DTE Cable
Pinouts
Figure 36 illustrates the EIA/TIA-449 DTE cable.
Figure 36 EIA/TIA-449 DTE Cable Assembly
Table 37 describes EIA/TIA-449 DTE cable pinouts.
14 CTS/RTS- <- Control- 10
20 RXD/TXD+ <- Transmit+ 2
44 RXD/TXD- <- Transmit- 9
15 TXD/RXD+ -> Receiver+ 4
39 TXD/RXD- -> Receiver- 11
16 RXC/TXCE+ -> Timing+ 6
40 RXC/TXCE- -> Timing- 13
- Shielding sheath <--> Shielding sheath -
Table 36 X.21 DCE Cable Pinouts (continued)
DB50 Signal Signal Direction Signal DB15
Tabl e 37 EIA/TIA-449 DTE Cable Pinouts
DB50 Signal Signal Direction Signal DB37
7 GND <--> Circuit GND 19
23 DTE/DCE - Circuit GND 19
50 GND <--> Sield GND 1
8 DTR/DSR+ -> TR+ 12
32 DTR/DSR- -> TR- 30
13 DSR/DTR+ <- DM+ 11
37 DSR/DTR- <- DM- 29
10 RTS/CTS+ -> RS+ 7
34 RTS/CTS- -> RS- 25
38 CTS/RTS+ <- CS+ 9
14 CTS/RTS- <- CS- 27
36 DCD/DCD+ <- RR+ 13
12 DCD/DCD- <- RR- 31
1 LL/LL -> LL 10
20 RXD/TXD+ <- RD+ 6
44 RXD/TXD- <- RD- 24
15 TXD/RXD+ -> SD+ 4
39 TXD/RXD- -> SD- 22
16 TXCE/RXC+ -> TT+ 17
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