Notes On Tc35It Modem Programming - Siemens tc35it Installation & Programming Manual

TC35iT Installation & Programming Manual
Start Windows HyperTerminal on the PC. To begin communications, configure the appropriate
Comm Port and use the settings 9600 baud rate, no handshake, no parity, 1 stop bit. If you are
unfamiliar with HyperTerminal please see Appendix 1.
Follow these instructions for the programming sequence:
1. Type at and press return. OK should come back.
(NOTE – if the TC35iT has already been programmed by Skye, you may not see the OK come
back. In this case type ate1 and press return. Then type atq0 and press return. Now try typing at
again and press return. OK should come back.)
2. Type at&f and press return. OK should come back.
3. Type at+cbst=71,0,1 and press return.
4. Type at&w0 and press return.
5. Type at&v and press return. The modems settings are displayed.
6. Check to see that the changes you have entered are all there. There will also be other settings
which you have not changed.
To check the TC35iT is correctly set up, make a call from it through the PC (if an airtime contract
barring outward calls is in place, this may not be possible). To do this type atdt then the
telephone number, then press return. You will see the message CONNECT 9600 on the screen if
successful. Try to ring a telephone nearby so that you can hear it ring and answer it! To hang up,
type +++ath and press enter.
IMPORTANT - it is important to switch off the power to the TC35iT before disconnecting any other
cables, to prevent damage. When power has been removed the red LED 'Modem Active' light will
go off.
Disconnect the 'TC35iT programmer' cable from the PC and TC35iT. Connect this TC35iT to the PC as
required. Replace the datalogger site TC35iT in the GSM Housing Unit as described in 3.2.1.

3.3 Notes on TC35iT modem programming

The above settings have been tested on UK networks only.
There is only one difference between the datalogger modem programme in Chapters 3.1 and 3.2,
that is instruction 13. The command at+cbst defines the type of modem connection as follows:
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