In-Situ TROLL Link Telemetry System Operators Manual - Manual (Page 10)

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7. Click the check mark. Click Yes when asked to proceed.
8. Click No when prompted to save the changes as the new default settings.
You will need to change the Win-Situ communication settings to
match these settings the next time you connect your instrument.
Determining Your Service Provider
TROLL Link 100 systems require a wireless service plan provider. Users must obtain
their own cellular GSM/GPRS service plan, either from a third party or from In-Situ. In-
Situ supports third-party service plans provided by AT&T
®
and T-Mobile
®
.
In-Situ Inc. uses AT&T as the service provider for the TROLL Link 100 and 101 in the
U.S.A. and Rogers™ Communications in Canada.
Determining SMS Usage
Short Message Service (SMS) is a service that permits devices within a network to
send and receive short messages (also known as text messages, or SMSs). Typically,
you purchase a certain number of SMS messages from your service provider.
Messages sent or received beyond the purchased amount are charged at a different
rate (overages).
To purchase the appropriate service plan, you need to know how many SMS messages
you will send each month. This is based on your desired data and sample rates from
your In-Situ instruments.
l
One SMS message holds up to five measured values from a single instrument
(i.e., instrument parameters, battery life, etc.).
l
Instruments that require more than five values to be transmitted at one time require
additional messages.
l
Up to 16 messages (80 values) can be transmitted at one time.
Use the following chart to determine what type of plan you need to avoid unexpected
overage charges. The chart describes sending a single SMS (5 measured values or
less) when sampling a single instrument. Sampling additional instruments increases
the number of messages.