ET100A LAN-WAN Bridge
23
d.
X.21
INTERFACE
PIN
ASSIGNMENT
PIN CIRCUIT
FUNCTION
DIRECTION
CCITT
1
FGND
Protective
GND
101
2
T(A)
Xmit
data
A
OUT
103
3
R(A)
Receive
data
A
IN
104
4
C(A)
Request
to
send
A
OUT
105
7
GND
Signal
ground
102
8
I(A)
Data
carrier
detect
A
IN
109
9
S(B)
Receive
clock
B
IN
115
10
I(B)
Data
carrier
detect
B
IN
109
14
T(B)
Xmit
data
B
OUT
103
16
R(B)
Receive
data
B
IN
104
17
S(A)
Receive
clock
A
IN
115
19
C(B)
Request
to
send
B
OUT
105
Table
11:
X.21
INTERFACE
PIN
ASSIGNMENT
SW2
‐
1/2
ON/OFF
Содержание ET100A
Страница 1: ...ET100A ver2 Synchronous WAN Ethernet Bridge 10 100Base TX Ethernet over V 35 X 21 RS 232 530 449 ...
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Страница 10: ...ET100A LAN WAN Bridge Unit Detail 13 11 10 8 6 7 9 5 12 4 2 3 1 Figure 2 ET100A Unit Detail 10 ...
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