Glossar
| Abbrev | Description |
|---|---|
| AP | Application Processor, one of many CPUs within the smart phone main SoC |
| IMS | Ip Multimedia Service is the technical term for voice calls or videos call using data services, can also support SMS. |
| PDC | Persistent Device Configuration, a QMI service responsible for configuration similar to Android Carrier Configurations. |
| QMI | Qualcomm MSM Interface, a binary protocol which is based on TLV (Type,Length,Value). See libqmi for more infromation. |
| Hexagon | Qualcomm DSP family which is used as baseband for smartphones. |
| SoC | System on a Chip, a single physical chip containing multiple systems, CPUs, modems, core or functionalities. Previous the CPU, the GPU, power management, [..] has been seperate chips, now they are all integrated into a single chip. |
| VoLTE | A marketing term for the IMS using LTE as transport. |
| VoWifi | A marketing term for the IMS using Wifi as transport. Using Wifi with an additional IPSec tunnel to connect to the mobile operator. |
| PDN | Packet Data Network. Within LTE, a data session with a P-GW, selected by an APN (internet or ims or ..). |