LTE Standard Module Series Contents About the Document ................................................................................................................................... 3 Contents ....................................................................................................................................................... 4 Table Index ................................................................................................................................................... 5 1 Introduction .......................................................................................................................................... 6 1.1.
Audio Channels ......................................................................................................................... 6 2 Description of Audio AT Commands ................................................................................................. 7 2.1. AT Commands Introduction ....................................................................................................... 7 2.1.1. Definitions ........................................................................................................................ 7 2.1.2. AT Command Syntax ....................................................................................................... 7 2.2.
Declaration of AT Command Examples ..................................................................................... 8 2.3. AT Command Description .......................................................................................................... 8 2.3.1. AT+CLVL Loudspeaker Volume Level Selection .......................................................... 8 2.3.2. AT+QAUDLOOP Control Audio Loop Test .................................................................... 9 2.3.3. AT+QAUDRD Record Audio File .................................................................................. 9 2.3.4.
AT+QPSND Play Audio File to Far-End or Near-End ................................................. 11 2.3.5. AT+QAUDPLAY Play Local Audio File ........................................................................ 13 2.3.6. AT+QAUDMOD Set Audio Mode ................................................................................ 14 2.3.7. AT+QIIC Read/Write Codec via IIC............................................................................. 15 2.3.8. AT+QTTS Play Text ..................................................................................................... 16 2.3.9. AT+QWTTS Play/Send Text to Far-end ......................................................................
18 2.3.10. AT+QTTSETUP Set Parameters for TTS ................................................................... 19 2.3.11. AT+QAUDPASW Select Audio PA Type...................................................................... 21 2.3.12. AT+QAUDSW Select Codec ....................................................................................... 21 2.3.13. AT+QICMIC Set Uplink Gains of MIC ......................................................................... 22 2.3.14. AT+QICSIDET Set Side Tone Gain in Current Mode .................................................
23 3 Error Codes ........................................................................................................................................ 24 4 Appendix Reference .......................................................................................................................... 25 EC200U&EG915U_Series_Audio_Application_Note 4 / 25