42
Echo 2 Mbps Multiplexer
SALES: 0118 965 5100
Appendix I - X.21/V.11 Network Crossover Cable
15 Way Multiplexer DCE
to DCE or Network DCE
ONWARD LINKING Crossover Cable
MUX 15 Way Male
Connector
UNC 4/40 Screws
V.11 15 Way Male
Connector
M3 Screws
2
Type at Network
Connector
(Normal Use)
1 1
SHIELD
-
8
8
G
Common Return
4 2
T(A)
Generator
11 9
T(B)
Generator
2 4
R(A)
Load
9 11
R(B)
Load
5
3
C(A)
Generator
12
10
C(B)
Generator
3 5
I(A)
Load
10 12
I(B)
Load
7 6
S(A)
Load
14 13
S(B)
Load
Notes:
1
V11 Clocks X(A), X(B) from the Nx64 port are
generators
, and should not be connected.
The channel port should be configured to use external clock for both external transmit and
external receive clocks.
2
V11 Male for connection to NTU must have M3 Screws. Mux end has 4/40 screws unless
National Regulations permit the use of UNC 4/40. Each cable end must be clearly
identifiable.
3
Dashed lines show wires to be twisted pairs.
4
Cable type: Belden 9508, 8 twisted pair overall screen (or equivalent). Maximum length
100 Metres.
5
Connector shell and termination as specified in EMC section, Appendix C, on page 34 of
this manual.
