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Part No. 057-129 DSE871x mono remote display ISSUE 2.1 21/09/2010 ADM
29
Modem Setup Sequence
1)
If the Modem and DSE87xx series communicate successfully:
2)
In case of communication failure between the modem and DSE87xx series module, the modem is automatically
reset and initialisation is attempted once more:
3)
In the case of a module that is unable to communicate with the modem, the display will continuously cycle
between ‘Modem Reset’ and ‘Modem Initialising’ as the module resets the modem and attempts to
communicate with it again, this will continue until correct communication is established with the modem.
In this instance, you should check connections and verify the modem operation.
Example 2 – Module connected to a modem.
Example 3 – Modem status of a GSM modem
Many GSM modems are fitted with a status LED to show operator cell status and ringing indicator. These can be a
useful troubleshooting tool.
In the case of GSM connection problems, try calling the DATA number of the SIMCARD with an ordinary telephone.
There should be two rings, followed by the modem answering the call and then ‘squealing’. If this does not happen,
you should check all modem connections and double check with the SIM provider that it is a DATA SIM and can
operate as a data modem. DATA is NOT the same as FAX or GPRS and is often called Circuit Switched Data
(CSD) by the SIM provider.
NOTE:
NOTE:
NOTE:
NOTE: In the case of GSM modems, it is important that a DATA ENABLED SIM is used. This is often
In the case of GSM modems, it is important that a DATA ENABLED SIM is used. This is often
In the case of GSM modems, it is important that a DATA ENABLED SIM is used. This is often
In the case of GSM modems, it is important that a DATA ENABLED SIM is used. This is often
a different number than the ‘voice number’
a different number than the ‘voice number’
a different number than the ‘voice number’
a different number than the ‘voice number’ and is often called Circuit Switched Data (CSD) by the SIM
and is often called Circuit Switched Data (CSD) by the SIM
and is often called Circuit Switched Data (CSD) by the SIM
and is often called Circuit Switched Data (CSD) by the SIM
provider
provider
provider
provider....
If the GSM modem is not purchased from DSE, ensure that it has been correctly set to operate at 9600 baud. You
may need to install a terminal program on your PC and consult your modem supplier to do this. GSM modems
purchased from DSE are already configured to work with the DSE87xx series module.
Currently connected GSM
operator and signal strength.
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