•
Issue the command:
AT+CSS?
to verify that the modem is registered onto a cell tower
Confirm and that you are registered on the cellular network.
AT+CSS?
A reply of
+CSS? 2,Z,99999
indicates that you are not registered. It may take up to 15 seconds or so
after power-up to register on the network. Once registered a typical response will be
+CSS?:
1,A,4152
where 1 is the band class, 1=800 MHz, 2=1900 MHz, A-F is the band
(Z indicates not registered on network), 4152 is the SID, i.e. the cell tower ID, (99999
indicates not registered on network).
•
•
Attempt to relocate the modem and/or antenna to receive a stronger signal.
•
Make certain that the modem has been provisioned by the cellular network. To provision
the modem please see the
Appendix
for activation instructions for your carrier.
NOTE: Running diagnostics from Modem Properties may not work if the computer attempts to
communicate with the modem at an improper baud rate.
6.2 Altering The Modem’s Cellular Parameters
If you have subscribed to a cellular provider using the serial number printed on the case of the
modem, but still cannot provision the unit, you may need to program the
Mobile Identification
Number
(MIN),
Mobile Country Code
(MCC) and/or the
Mobile Network Code
(MNC). Only
change the MCC and MNC if you are sure that you need to. The next five sub-sections explain
how to change these parameters.
6.3 Entering Offline Digital Mode
In order to change the MIN, MCC or the MNC, you must first change the operational mode to
Offline Digital by typing:
AT$KWMODE=1
After changing this or any other parameter, you may query the modem, by typing a "
?
" in place
of the "
=
". For example, to confirm that you are in the Offline Digital operational mode, you
would type:
AT$KWMODE?
6.4 Unlocking The Service Programming Code (SPC)
As a safety precaution, to keep unauthorized users from gaining access to the device, the modem
carries a Service Programming Code (SPC). The default SPC is 000000. Without entering this
code, you cannot alter the modem's configuration. To unlock the modem and allow write access,
enter the SPC with this command:
AT$KWSPC=000000
6.5 Entering The Mobile Identification Number (MIN)
You may now enter the MIN/DIR given to you by your CDMA provider by typing:
AT$KWDIR=
<number provided by CDMA provider>
6.6 Entering The Mobile Country Code (MCC)
It is only necessary to enter the Mobile Country Code (MCC) and Mobile Network Code (MNC)
if the modem is not already programmed for operation in your area. If required, these codes are
available from your CDMA provider. To change the MCC type:
AT$KWMCC=
<3 digit MCC>
6.7 Entering The Mobile Network Code (MNC)
To alter the MNC, type:
AT$KWMNC=
<2 digit MNC>
After configuring your modem, you must issue the command:
AT$KWMODE=2
This resets the modem and writes your configuration changes to non-volatile memory. Your
modem is now programmed for operation in the area. These configuration changes will remain
