# 12.8 What is the difference between CGDCONT and QICSGP?

When using a module’s embedded stacks like TCP and UDP protocol, you need to use `AT+QICSGP` to configure the APN. While using PPP, you need to use `AT+CGDCONT` to configure the APN.

## Also of interest

- [Why certification must take a global approach](https://www.quectel.com/blog/global-device-certification/)
- [Digital signage](https://www.quectel.com/industry/digital-signage/)
- [RTK Correction Solution](https://www.quectel.com/gnss-rtk-correction-solution/)