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DB25S Connector with V.35 Interface
DESCRIPTION
The DB25 connector also ties the MT56DSU-S to a DTE with a V.35 interface. When a V.35 interface device
is connected to a MT56DSU-S, the internal shunt has to be moved to the V.35 position. The V.35 interface for
the DB25 connector has the following pinout configuration.
PIN IDENTIFICATION
Pin
Description
1
Chassis Ground
7
Signal Ground
4
Request To Send
5
Clear To Send
6
Data Set Ready
8
Carrier Detect
20
Data Terminal Ready
2
Transmit Data (A)
12
Transmit Data (B)
3
Receive Data (A)
22
Receive Data (B)
15
Transmit Clock (A)
21
Transmit Clock (B)
17
Receive Clock (A)
18
Receive Clock (B)
13
12
11
10
9
8
7
25
24
23
22
21 20
19
Figure B-3. Connector
6
5
4
3
2
1
18
17
16
15
14
Appendix
33
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