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Confirm that the SIM’s PIN has been authenticated by the network using the
AT+CPIN?
command.
The reply should read “+CPIN: READY”. See Section 6 for SIM related information if “READY” does
not display.
Verify good signal strength with the
AT+CSQ
command. A typical reply is +CSQ 25, 99. The first
number is signal strength and ranges from 0 to 31 (the higher the number, the stronger the signal).
Define the Packet Data Protocol (PDP) Context
Next, the Access Point Name (APN) must be defined using the PDP Context command
AT+CGDCONT=1,“IP”,<apn>
command. The <apn> is the access point name for a specific
cellular provider (for example AT+CGDCONT=1,”IP”,internet). The
At+CGDCONT?
command can be
issued to verify the PDP Context information.
The PDP context information can be set to non-volatile by issuing the
AT^SCFG=GPRS/Persistentcontexts=1
command. GPRS PDP context will not be reset by an
AT&F command. Refer to Figure 5.3.
Figure 5.3 Set PDP Contexts, APN
Exit HyperTerminal before attempting to connect using a Dial-Up-Networking connection.
Содержание LandCell SMC-GPRS Series
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