SMS messaging with a mobile phone attached to the PC
If you plan to send/receive less then
15 000 SMS messages per day a good option is to attach a GSM phone or GSM modem
to your PC. The GSM phone must be equipped with a SIM card that
has good tariff for SMS messages. The GSM phone can be attached
with a data cable, with and InfraRed port (IR) or with a BlueTooth (BT)
connection. With this setup you can use a computer program such as Ozeki
Message Server to send/receive SMS messages. The computer program in this
case uses the attached device to communicate with the GSM network.
If a
message is sent by the application running on the computer it is first sent to
the attached GSM phone, and as a second step the GSM phone transmits the messages to the SMSC of
the GSM service provider through a wireless link (Figure 1.). When a message is received, the GSM phone stores the
message in its memory or on the SIM card and sends a notification to the PC.
When the program running on the PC receives this notification, it reads
the appropriate memory cell and deletes the message from the phone to make
room for the next incoming message (Figure 1.).
Figure 1 - GSM modem connection to send and receive a large number of SMS messages.
Sending an SMS message using a cell phone
takes about 5-6 seconds. Receiving takes about the same time. Good software, such as Ozeki Message Server allows you to
attach more then one devices to your PC and to use them simultaneously to increase capacity.
The best option to connect a phone to the
PC is to use a standard RS232 serial cable. USB cables, InfraRed and BlueTooth
connections are not that reliable. You can read more about the connection
methods on the following pages
Next page:
RS232 Data Cable
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