Configure the APN on cellular modules

note

See General cellular IoT modules for Telit, Sierra Wireless, Cinterion, Gemalto, Thales, SIMCom, or Sequans.

Quectel cellular IoT modules

Applies to all Quectel modules: BG95, BG96, EG25, EG91, EG95, EC21, EC25, M65, M66, M95, MC60, BG77, BG600L

With Quectel modules, you can set the APN with the 3GPP standard command AT+CGDCONT:

AT+CGDCONT=1,"IP","em",,

Quectel also utilizes a vendor-specific command AT+QICSGP:

AT+QICSGP=1,1,"em","","",1

According to Quectel, use the command AT+QICSGP when the internal TCP/UDP stack is needed. It also allows you to configure which bearer (CSD or GPRS) is used.

To manage roaming, Quectel also introduced the AT+QCFG command. The suggested setting is:

AT+QCFG="roamservice",2,1 # roaming enabled

Check your Quectel module AT command guide for more information.

u-blox cellular IoT modules

u-blox supports the standard 3GPP command to set APNs via AT+CGDCONT:

AT+CGDCONT=1,"IP","em",,

u-blox also supports a vendor-specific command to configure the APN for the initial EPS bearer:

AT+UCGDFLT=1,"IP","em"

For roaming configuration, u-blox modules utilize a vendor-specific AT+UDCONF command. This command enables automatic search if the device can't attach to a specific network.

AT+UDCONF=20,2

Check your u-blox module AT command guide for more information.

General cellular IoT modules

Applies to the following cellular module vendors: Fibocom, Telit, Sierra Wireless, SIMCom, Cinterion, Gemalto, Thales, Sequans

The commands for configuring the APN settings are 3GPP standardized, and all major cellular module manufacturers support the commands.

You must use the AT+CGDCONT command to set the APN:

AT+CGDCONT=1,"IP","em",,

Check your AT command guide for further information, or read 3GPP Technical Specification 27.007.