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6.
Confirm your registration on the cellular network with the AT+CSS? command. A reply of +CSS?
2,Z,99999 indicates the modem is not registered on the network. It may take up to 15 seconds
after power-up to register on the network. Once registered, a typical response is +CSS?:
1,A,4152 where 1 is the band class, 1=800 MHz, 2=1900 MHz, A-F is the band (Z indicates the
modem is not registered on the network), 4152 is the SID, i.e. the cell tower ID, (99999
indicates the modem is not registered on the network).
7.
Verify the phone number currently in the modem with the AT$KWDIR? command. It should be
10 digits (i.e. 0000005555) prior to activation.
8.
Perform the activation instructions specific to your carrier as indicated in Section 6 - Carrier
Specific Information (i.e., for Verizon, OTASP can be initiated with an AT command of
AT+CDV*22899). Wait 2 minutes.
9.
After the unit has been activated, confirm programming success by verifying the assigned
number with the AT$KWDIR? command. It should now display your assigned number.
10.
You can also confirm the assigned PRL number with the AT+GMR command. Power cycle the
modem. If your account supports voice, modem activation can be confirmed by performing a
voice call to your cell phone with the AT+CDV<Cell Phone Number> command (without spaces
or angle brackets). Your cell phone should ring and display the phone number of the modem.
Figure 4.2: 819-1XRT HyperTerminal Modem Activation
Configuration and test of a Circuit Switch Data (CSD) call, and Packet Data Call (TCP/IP) are
discussed in the next section.