A–12
DEC WANrouter 90 Owner’s Manual
A.2.1.5
BC22X-02 BT Kilostream Adapter Cable (U.K. Only)
Use the BC22X-02 BT Kilostream adapter cable to connect the DEC WANrouter 90,
50-pin, D-connector to British Telecom’s Kilostream service (through the
BC22Z-xx extension cable and the 64k bit/s, X.21 interface). The BC22X-02 is
7-wire cable with a 50-pin, female, D-connector on one end and a 15-pin, male,
D-connector on the other end. Figure A–7 shows the wiring diagram.
Figure A–7: Wiring Diagram for BC22X-02 BT Kilostream Adapter Cable
LKG-5983-92I
50-Pin D-Connector
15-Pin D-Connector
TXD A
TXD B
RTS A
RTS B
RXD A
RXD B
LOCL LPBK
TEST IND
RI
RXCLK A
RXCLK B
TXCLK A
TXCLK B
DSR A
DSR B
DCD A
DCD B
CTS A
CTS B
DTE GND
DTR A
DTR B
DSRS
TXDA
TXDB
RXD A
RXD B
TXCLK A
TXCLK B
DTE GND
1
2
3
4
6
7
9
10
11
12
13
15
17
18
19
20
21
34
35
37
38
39
40
44
45
46
50
2
9
4
11
6
13
8
120-ohm
.5w
resistors
