If you are working on telephone solutions, please check
out the Ozeki VoIP SIP SDK.|
It can be used to create VoIP client and server software.
Send SMS using a GSM modem - Connection problems
Download Hyper Terminal
In this page I give some information about what to do
if your modem is not recognized by the software.
In some situations Ozeki NG SMS Gateway will not detect your GSM phone. In this
case you can test whether you phone responds using Hyper Terminal. Hyper
Terminal is built into windows. It is a good tool to test modem connectivity.
To start hyperterminal, select
When Hyperterminal starts, you must provide a name for the connection. Type
any name you like to get to the "Connect To" form (Figure 1).
Figure 1 - Hyper Terminal, connect to form
In the "Connect To" configuration form you can select the
COM port your device is
attached to. If you use a USB cable, a PCMCIA modem, a BlueTooth connection or
an Infrared port, you need to install a driver supplied by the manufacturer of
the device. The driver will register a virtual serial port. In hyper terminal
select the virtual port created by the driver of your device.
When the port is selected click Ok, to get to the Port configuration form. On
this form specify the port settings. The most common port speeds for GSM phones
and modems are 9600, 19200, 57600 and 115200. The Data bits should be set to 8.
The Parity to none the Stop bits to 1 and the flow control should be hardware.
After all configurations are made the terminal window will open. You can use
this window to test the communication. The communication can be tested by
typing AT into the terminal window. If your GSM phone or modem is working the
AT will appear and an OK response will be returned. If your GSM phone or modem
is not working then you will not see the AT command after typing it in
Figure 2 - AT command and OK response
If the test is successful, which means you have seen the OK response from your
GSM phone or modem please close HyperTerminal and the "Autodetect" option
in Ozeki NG will work.
If the test is not successful, one of the following problems need to be resolved:
- Some other software uses your device. Sometime 3rd party phone manager
applications, or SMS solutions block the device. Try to shut down or remove
these applications from your system.
- Your device is not a GSM modem. Please check the manual of your device, to see
if it has a built in modem and can be operated with AT commands. Ozeki NG uses
AT commands to control your device.
- The driver supplied with your device is not working. Try to find another
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