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Pin
Signal
Direc-
tion
DCE mode signal
RS- 232
V.10
RS- 449
V.11
RS- 530
RS-
530A
V.35
X.21
24
MODE3 In
Open
Open
Open
Open
Open
Open
25
DSR–
In
TR–
DTR–
DTR–
26
GND
—
GND
GND
GND
GND
GND
GND
Table 46: Serial connector cable type coding
Interface type
Connector mode pins
MODE3 (24)
MODE2 (21)
MODE1 (22)
MODE0 (23)
V.35 DTE
GND
Open
GND
GND
V.35 DCE
Open
Open
GND
GND
EIA–530 DTE
GND
GND
Open
GND
EIA–530 DCE
Open
GND
Open
GND
EIA–530A DTE
GND
GND
GND
Open
EIA–530A DCE
Open
GND
GND
Open
RS–449 DTE
GND
Open
GND
Open
RS–449 DCE
Open
Open
GND
Open
RS–232 DTE
GND
Open
Open
GND
RS–232 DCE
Open
Open
Open
GND
X.21 DTE
GND
GND
Open
Open
X.21 DCE
Open
GND
Open
Open
Table 47: HSSI connector pin assignments
Signal name
Positive
pin
Negative
pin
Direction
DTE
signal
name
DCE
signal
name
SG (Signal Ground)
1
26
—
—
—
RT (Receive Timing)
2
27
Input
RT
TT
CA (DCE Available)
3
28
Input
CA
TA
RD (Receive Data)
4
29
Input
RD
SD
LC (Loop–back C)
5
30
Input
LC
LA
ST (Send Timing)
6
31
Input
ST
—
SG (Signal Ground)
7
32
—
—
—
Installation — Hardware Components
August 2013 101
Содержание Secure Router 2330
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