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Using HyperTerminalTo configure a modem serial emulation software is often required, one of themost frequently used applications is HyperTerminal in Windows, thisexample shows Windows XP. The following is a guide as to how touse HyperTerminal to communi-cate with a modem:

1. Connect the modem using amodem cable to the serialport on the computer,in this example, Com 1. Astraight through 9-pos. cable isused as the computer is DTEand the modem DCE(see page 26).

2. Start HyperTerminal, the application is normally located underAccessories/Communications.

3. State a name for the connection, e.g. Com 1 9600 8N1(for Com 19.6 kbit/s 8-data bits, parity none (N) and 1 stop bit)

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4. From the drop down list select the communications port that isconnected to the modem.

… In this example we choose COM1.… When COM1 is selected the fields for country, area code and

telephone number are deactivated (dimmed).… Click on OK.

5. Define the properties for the communication port, i.e. thecommunication rate, number of data bits, parity, number ofstop bits and flow control. In this example select:

… Bit per seconds to 9600… Data bits 8… Parity None (N)… Stop bit 1

The settings for flow control set how handshaking is carried outbetween the modem and PC.

… Xon/Xoff, is software controlled.… Hardware, means signalling with RTS/CTS.… None, means that handshaking is switched off.

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6. Once these settings have been madeHyperTerminal is configured. Further settingscan be made from the File menu, Properties.Here you can select, among others to emu-late different terminals, i.e. VT100. Using theASCII-settings button it is possible to set theconditions for character, line feed and localecho.

Com 1 9600 8N1 - Hyper Terminal

File Edit Wiew Call Transfer Help

New Connection

Open...

Save

Save As...

Page Setup...

Print...

Exit Alt+F4

Properties

7. HyperTerminal is now ready for use, as the telecom modem usesAT-commands for configuration you can check whether contact withthe modem has been established by typing:

… AT followed by … The modem should then respond with OK.

OK is the result code from the modem that indicates that the command hasbeen executed; the command also automatically sets the speed, number ofbits, parity and stop bit on the modem.

As connection has now been established between HyperTerminal and themodem, you can now configure the modem. You should also remember to takeinto consideration the properties that the modem shall communicate with in the finalapplication.

TDtoolOne configuration option for our modems is the TDtool utility, this is an applicationthat automatically reads which modem is connected and then facilitates its configura-tion.

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The application reads theconfiguration parametersfor the connected modem.This applies to the currentsettings as well as possibleconfiguration options.These can be found underthe Configuration andAdvanced tabs.

TDtool can be down-loaded from our website.

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In the examples we have connectedTDtool to two alternative modems,the screen shots show how the appli-cation adapts according to whichmodem is connected.

Option 1) A TD-33Option 2) A TD-34, a modem

that, among other features, can sendSMS messages.

Under the Advanced tab for TD-33,you can enter the telephone numberfor call-back and the password touse.

Under the Advanced tab for TD-34there are other configurationoptions, here you have the optionto make the necessary SMS settings,etc.

TDtool is an excellent supplement to utilities such as HyperTerminal as it simplifies theconfiguration of telecom modems. When all the settings have been made these areeither downloaded to the modem or saved in a text file.

Option 1 TD-33

Option 2 TD-34

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