WorldCast Equinox - Release 3.1 - user manual
– 07/2011
Page 29
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4.5.3. X.21 DTE Interface
15
pin female connector
contact view
This is a SELV connection
and must only be connect-
ed to other SELV ports
.
The X.21 data interface (DTE)
Pin
Signal
Description
1
N/C
No Connection
2
Tx +
Transmit data input +ve (from Equinox)
3
C +
Control input +ve (from Equinox)
4
Rx +
Receive data ve (to Equinox)
5
I +
X.21 indicate ve (to Equinox)
6
Clk +
Signal timing output -ve (to Equinox)
7
N/C
No Connection
8
GND
Ground (common)
9
Tx -
Transmit data input -ve (from Equinox)
10
C -
Control input -ve (from Equinox)
11
Rx -
Receive data output -ve (to Equinox)
12
I -
X.21 indicate output -ve (to Equinox)
13
Clk -
Signal timing output -ve (to Equinox)
14
N/C
No Connection
15
N/C
No Connection
This data interface, which is supplied on a 15
pin D-type female
connector, allows the connection of X.21 compatible network de-
vices to the WorldCast Equinox.
Table 3.1 X.21 Port Pin Assignments
Note:
If the WorldCast Equinox is connecting to equipment with V.35 interface then you can pur-
chase a converter cable to connect the X.21 to the V.35 interface.
