3Com Router 3012 Installation Manual page 62

62 C A: O
HAPTER PTIONAL
EIA-530 DTE Cable
Pinouts
C S
ABLE PECIFICATIONS
EIA/TIA-449 DCE Cable Pinouts (continued)
Table 38
DB50 Signal
41 NIL/TXC-
- Shielding sheath
Figure 38 illustrates the EIA-530 DTE cable.
Figure 38 EIA-530 DTE Cable Assembly
Table 39 describes EIA-530 DTE cable pinouts.
Table 39 EIA-530 DTE Cable Pinouts
DB50 Signal
7 GND
23 DCE/DTE
50 GND
8 DTR/DSR+
32 DTR/DSR-
13 DSR/DTR+
37 DSR/DTR-
10 RTS/CTS+
34 RTS/CTS-
38 CTS/RTS+
14 CTS/RTS-
36 DCD/DCD+
12 DCD/DCD-
1 LL/LL
20 RXD/TXD+
44 RXD/TXD-
15 TXD/RXD+
39 TXD/RXD-
16 TXCE/RXC+
40 TXCE/RXC-
19 RXC/TXCE+
43 RXC/TXCE-
18 TXC/NIL+
42 TXC/NIL-
- Shielding sheath
Signal Direction Signal
<- ST-
<--> Shielding sheath
Signal Direction Signal
<--> Circuit GND
- Circuit GND
<--> Shield GND
-> DTR+
-> DTR-
<- DSR+
<- DSR-
-> RTS+
-> RTS-
<- CTS+
<- CTS-
<- DCD+
<- DCD-
-> LL
<- RXD+
<- RXD-
-> TXD+
-> TXD-
-> TXCE+
-> TXCE-
<- RXC+
<- RXC-
<- ST+
<- ST-
<--> Shielding sheath
DB37
23
-
DB25
7
7
1
20
23
6
22
4
19
5
13
8
10
18
3
16
2
14
24
11
17
9
15
12
-