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• Degradation in signal strength can be the result of a disturbance from another
source, for example an electronic device in the immediate vicinity. More
information about possible communication disturbances can be found in section
8.3.5, page 59.
• When an application is completed, you can verify signal strength by issuing the
AT command AT+CSQ or AT*E2EMM. See the AT Commands Manual for further
details.
Before installing the wireless modem, use an ordinary mobile telephone
to check a possible location for it. In determining the location for the
radio device and antenna, you should consider signal strength as well
as cable length.
7.4.1.3 Connection of Components to Wireless modem
• The integrator is responsible for the final integrated system. Incorrectly
designed or installed, external components may cause radiation limits to be
exceeded. For instance, improperly made connections or improperly installed
antennas can disturb the network and lead to malfunctions in the wireless
modem or equipment.
7.4.1.4 Network and Subscription
• Before the integrator’s application is used, the user must ensure that their
chosen network provides the necessary telecommunication services. Integrators
should contact their service provider to obtain the necessary information.
• Integrators intending to use SMS in the application should ensure this is included
in their (voice) subscription.
• Similarly, integrators intending to use GPRS for data services should also ensure
that this service is available on their network and in their account plan.
• Users should consider the choice of the supplementary services described in
section 2.3.2Short Message Service, page 14.
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