Specifications

i50 Manual (5.10)
Page 65
© 2015 Datalink Systems, Inc.
www.datalinksystemsinc.com
18.0 Troubleshooting
18.1 GPRS Modem
Follow the procedure below to detect problems with the internal GPRS modem:
1) Use the iSeries Programmer to connect to the i50 and enter programming mode. Click on the
Device Ports toolbar button, then select GPRS to open the GPRS modem serial port.
2) Type ATE1<ENTER>. If the modem is powered up, you should receive an OK response.
3) Type the following commands, in order, using <ENTER> to execute each one:
AT+CPIN? Queries SIM state. Check for a +CPIN: READY response.
AT+CFUN=0 De-registers the modem, if online.
AT+CGDCONT=1,”IP”,”APN” Sets modem APN (Access Point Name). Replace APN with
the APN defined by the network operator.
AT$AREG=2 Enables auto-registration.
AT&W Saves modem settings.
AT$RESET Resets modem.
AT+CREG? Checks GSM registration. If working OK, response should
be +CREG: 0,1 (home network) or +CREG: 0,5
(roaming).
AT%CGREG? Checks GPRS registration. Should return %CGREG: 0,1
(home) or %CGREG: 0,5 (roaming).
AT$NETIP? Checks GPRS activation. If modem is online, response will
show the modem’s IP address. If response shows all
zeroes, a GPRS connection problem exists.
AT$CGEER Show error messages. A “service not subscribed” error
indicates an invalid APN or SIM not activated.
AT&F Reset modem to factory defaults.
AT&W Save settings.