Quectel EC25 User Manual

LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 188 / 231
12 Audio Commands
12.1. AT+CLVL Loudspeaker Volume Level Selection
The command is used to select the volume of the internal loudspeaker of the MT.
Parameter
This parameter will not be saved.
AT+CLVL Loudspeaker Volume Level Selection
Test Command
AT+CLVL=?
Response
+CLVL: (list of supported <level>s)
OK
Read Command
AT+CLVL?
Response
+CLVL: <level>
OK
Write Command
AT+CLVL=<level>
Response
OK
If there is any error related to ME functionality:
+CME ERROR: <err>
Maximum Response Time
300ms
Reference
3GPP TS 27.007
<level> Integer type value (0-3-5) with manufacturer specific range (Smallest value represents
the lowest sound level)
NOTE

Quectel EC25 Specifications

General

Category	LTE Module
LTE TDD	B38/B40/B41
WCDMA	B1/B5/B8
GSM	850/900/1800/1900 MHz
Data rates	LTE Cat 4: 150 Mbps DL/50 Mbps UL
GNSS	GPS/GLONASS/BeiDou/Galileo/QZSS
Operating Temperature	-40°C to +85°C
Form Factor	LCC
Storage Temperature	-45°C to +90°C
SIM Interface	1.8V/3.0V
Antenna Interface	Main, Diversity, GNSS
LTE FDD	B1/B3/B5/B7/B8/B20
Interfaces	USB 2.0, UART, PCM, GPIO
Operating Voltage	3.3V - 4.3V
Protocols	TCP/IP, UDP, FTP, HTTP, HTTPS
Certifications	CE, FCC, PTCRB, GCF, RCM, IC