Weidmuller GPRS Alarm Unit - Manual (Page 19)

Description of Functions
3-17
3.2.6 GSM modem
The GPRS module realises a virtual dedicated line. With an M2M
GPRS tariff of a mobile telephone provider, the only costs in addition to
a low fixed monthly charge are the costs for the actual data transfer. No
permanently installed fixed-network telephone connection is required.
Each IE-GPRS-I/O can be accessed online at any time in the same way
as a mobile telephone.
The data transfer is not provided via the exchange of telephone
numbers, but via an Internet-based protocol. The data are collected on
an exchange server and can be requested there at any time, without the
need to establish a direct connection to the IE-GPRS-I/O. The router of
the mobile telephone provider need not be configured.
Thanks to the use of non-public IP addresses of the provider, the
IE-GPRS-I/O is invisible to the Internet.
Additionally, software is supplied for an exchange server, which, for
example, can also be operated after a router.
3.2.7 SIM card
A SIM card is used to set the selected tariff and the possible
communication services for the IE-GPRS-I/O. The availability of the
services fax, e-mail and voice depends on the chosen tariff and on the
enabling of the SIM card used, see SIM card agreement.
Before you insert the SIM card, first turn off the device!
Inserting the SIM card
Use a pointed object to press gently into the hole beneath the SIM card
compartment and open the SIM card compartment. Insert the SIM card
into the card compartment such that the contact faces are visible.
3.2.8 GSM services
For the case that the virtual GPRS line is interrupted, alarms can be
issued additionally via the GSM network using the configurable services
SMS, e-mail, fax and voice messaging.
CAUTION