001-0003-829 Revision 1
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Operational States
The modem has three operational states:
•
Command State
•
Online State
•
Online Command State
When first powered on, the modem is in the Command State where it is able to accept AT
commands. When instructed to dial out or to answer a data call, the phone is in the Online State.
Activating your Modem
1.
Connect the modem to an active COM port on a PC with an RS-232, 9 pin straight through cable.
2.
Insert a SIM card with an activated account, gold contact side up. Refer to Figure 2.1, Section 2,
for card orientation.
3.
Attach the antenna and power connector.
4.
Connect with a Hyper-Terminal session set to 115,200, 8 Bits, No Parity, 1 Stop Bit, and
Hardware Flow Control enabled. Refer to Figure 3.1.
Figure 3.1: 819-GPRS HyperTerminal Port Settings
5.
Confirm contact with the modem with the ATI command. This prints the cell module product
information. If you get an Error or no communication, verify the modem is connected to the
proper COM port and powered on. Refer to Figure 3.2.
