Siemens M101 - Manual (Page 22)

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