22
appendix.fm5
16.4.99
Gigaset V.24 Adapter dt/eng:A30853-X400-B104-3-74D1
The V.24 interface
Name
Based on CCITT
Meaning
Std. Pin Assign.
25-pin
9-pin
DCD
109 = Data Carrier Detect
Data carrier signal
8
1
CTS
106 = Clear To Send
Clear to send signal
5
8
DSR
107 = Data Send Ready
Data send ready
6
6
DTR
108 = Data Terminal Ready
Data terminal ready
20
4
GND
102 = Signal Ground
Signal ground
7
5
RTS
105 = Request To Send
Request to send
4
7
RxD
104 = Receive Data
Receive data
3
2
TxD
103 = Transmit Data
Transmit data
2
3
RI
125 = Ring Indicator
Incoming call
22
9
9-pole SubD socket
RI 9
CTS 8
RTS 7
DSR 6
5 GND
4 DTR
3 TxD
2 RxD
1 DCD
25-pin plug based on CCITT
13
12
11
10
9
8
7
6
5
4
3
2
1
25
24
23
22
21
20
19
18
17
16
15
14
109 DCD
102 GND
107 DSR
106 CTS
105 RTS
104 RxD
103 TxD
108 DTR
125 RI
GND
Transmitter
PC with 9-pole
SubD socket
RxD
RTS (7)
CTS (8)
TxD
RxD (2)
RTS
CTS
GND (5)
TxD (3)
Receiving PC with
25-pole socket
RTS (4)
CTS (5)
RxD (3)
GND (7)
TxD (2)
Pin no.
Signals to:
Socket 1
*
*
male
Socket 2
**
** female
1
DCD
receive
DCD
transmit
2
RxD
TxD
3
TxD
RxD
4
DTR
DSR
5
GND
GND
6
DSR
DTR
7
RTS
CTS
8
CTS
RTS
9
RI
receive
RI
transmit