Westermo GS-01 User Manual download pdf (Page 4)

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Functional description

The GS-01 modem provides RS-232/V.24 up to 9 600 bit/s connections over GSM net-

works. It can be used instead of serial cable to link PLC’s, data loggers, security and sur-

veillance system or for data acquisition.

It is possibility to have an external signal (DTR) to trigger the modem to call a pre-set

number. This makes it ideal for alarm monitoring and remote diagnostics from unmanned

stations.

It is also possible to send/receive SMS-messages up to 160 characters as well as fax

functions. It can communicate with other GSM-modems but also traditional analogue

modem such as TD-32 or ISDN-adapters like ID-90.

All configuration is made by AT-commands similar to standard analogue PSTN modems.

The GS-01 uses the standardised GSM network on 900 MHz. This makes it possible for

world wide use (not U.S.A.).

The housing is profiled aluminium and has been designed to be easy to use and simple to

install.

Note! To get the modem to work is it necessary to get a subscription (SIM-card) from

some network provider. To get all functions in the GS-01 to work properly it is

necessary to have the right subscription and that the network provider can support

right services. It is necessary to have a subscription that can handle both receive

and transmit data.

The test function of received signal strength makes it easy to see if it is possible

to get a functional communication link. This can be done without any SIM-card

inserted.

The GS-01 also support voice communication (some external equipment is necessary)

ISDN PSTN

GS-01GS-01

ID-90 TD-32

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Westermo GS-01 User Manual Page 4