CEP CT63 Podręcznik użytkownika - Strona 11

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2.3 SIM card reader

The CT63 Terminal is fitted with a SIM card reader designed for 1.8V and for 3V SIM cards. It is the flip-
up type which is lockable in the horizontal position and is accessed through a removable panel.

2.4 RS232 Serial Port

The modem supports a standard RS232 serial interface via its 9 pin Sub-D connector, shown below. In
line with serial communication terminology the CT63 Terminal should be considered as the data circuit-
terminating equipment (DCE) and the external application or computer as the data terminating
equipment (DTE). The maximum baud rate to communicate with the CT63Terminal is 230400 kbit/ s.
PIN
1
2
3
4
5
6
7
8
9

2.5 Serial Data

The modem supports the standard data character format of
Programmable baud rate (300bps to 230,400bps).
Auto-configuration mode with auto-baud (1,200bps to 230,400bps).
Multiplex ability according to GSM 07.10 Multiplexer Protocol.

2.6 Serial Data Signals

Serial Data from Modem (RD)
RD is an output signal that the modem uses to send data to the application.
Serial Data To Modem (TD)
TD is an input signal, used by the application to send data to the modem.
Signal
Direction
DCD
Output
RD
Output
TD
Input
DTR
Input
GND
-
DSR
Output
RTS
Input
CTS
Output
RI
Output
Table 3: Electrical characteristics of the serial port signals
Limits
> + 4V
<- 4 V
> + 4V
<- 4 V
> + 2,4V
< 0.8 V
> + 4V
< 0.8 V
0 V
> + 4V
< - 4 V
> + 2,4V
< 0.8 V
> + 4V
< - 4 V
> + 4V
< - 4 V
11
Description
Data carrier detect
Received data
Transmitted data
Data terminal ready
Ground connection
Data set ready
Request to send
Clear to send
Ring indicator