Siemens m101 User Manual
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
RTS 7
DSR 6
5 GND
4 DTR
3 TxD
2 RxD
1 DCD
4 DTR
3 TxD
2 RxD
1 DCD
25-pin plug based on CCITT
13
12
11
10
10
9
8
8
7
6
6
5
4
3
3
2
1
1
25
24
23
24
23
22
21
20
20
19
18
17
16
15
14
18
17
16
15
14
109 DCD
102 GND
107 DSR
102 GND
107 DSR
106 CTS
105 RTS
104 RxD
103 TxD
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