Chapter 3: Operation
98-148232-E To control data connections (PDP contexts) 37
Terminal watchdog
The Terminal watchdog monitors the terminal to ensure that it remains operational. It
continuously monitors valid system time (UTC) and CS attach (the BGAN circuit-switched
connection) status. Additionally, at regular intervals set by the user, the Terminal watchdog can
wake up the terminal from power save, start a data connection and verify a positive response
to a ping request, and send a position SMS or a loopback SMS to verify SMS connection.
For configuration with the web interface, see Terminal watchdog on page 82.
For configuration with SMS command, see ADVWATCHDOG: Get or set Terminal watchdog
parameters on page 28 and SMS remote commands on page 127.
Manual activation of data connections
You can manually activate a data connection in the following ways:
• Remote: Send an SMS to the EXPLORER 540. See ACTIVATE: Activate a data connection
with an SMS (BGAN only) on page 26.
• Local (EXPLORER 540 LAN interface):
• Access the web interface locally and click the tile for the data connection on the
dashboard, see To start and stop data connections on page 51, or
• Send an AT command to the terminal. See To configure the connected equipment for
PPPoE on page 38 (the example), To access the terminal using AT commands on
page 24 and Context management AT commands on page 139.
Cellular connection: If you are using the optional cellular connection with the
EXPLORER 540 Modem, the data connection is started automatically when the cellular
connection is established. For details, see Optional: To set up cellular network for data on
page 93.
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