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, GSM-14J Modem Kit
SIM Card Drawer
To open the SIM card drawer:
Turn off the power, then press the yellow
button with the point of a pen or similar
object.
Mounting
Screw the modem to a flat surface using the
two holes shown to the right.
Modem RS232 port pin-out
D-type 9 pin female connector:
Pin
Description
1
DCD (Data Carrier Detect)
2
RxD (Receive Data)
3
TxD (Transmit Data)
4
DTR (Data Terminal Ready)
5
GND (Signal Ground)
6
DSR (Data Set Ready)
7
RTS ( Request to Send)
8
CTS (Clear To Send)
9
RING (Ring Indicator)
LED: Status Indication
The blue LED indicates the modem's status according to the following table.
Modem is:
Switched on
Switched off, or no power
Not connected to network, not searching for
network, not finding SIM card, finds no PIN
entered.
2
Direction
O
O
I
I
-
O
I
O
O
LED Status
Flashes every 3 seconds
OFF
Flashes every 0.5 seconds
Siemens TC65 GSM modem
Unitronics
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