Siemens TC35 User Manual page 26

Signal PIN I/O Description
name
DCD 1 O The functions
correspond to those
of a serial interface
RXD 2 O
on the basis of a
V.24 protocol.
TXD 3 I
DTR 4 I
GND 5
DSR 6 O
RTS 7 I
CTS 8 O
RI 9 O
24
Interface description
Purpose of the connectors/connections
Parameters
active high >5V
low <–5V
logical 1=low <–5V
logical 0=high >+5V
active high >2.4V
low <1.8V
active high >2.4V
low <1.8V
0 V
active high >5V
low <–5V
active high >2.4V
low <1.8V
active high >5V
low <–5V
active high >5V
low <–5V
Use and operation
In order to control the Terminal and transfer
data, the customer application (e.g. host
computer) is connected via the RS232 cable.