Quectel EC25 User Manual

LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 35 / 231
1. If a fixed baud rate is set, make sure that both TE (DTE, usually external processor) and TA (DCE,
Quectel module) are configured to the same rate.
2. The value of AT+IPR cannot be restored with AT&F and ATZ; but it is still storable with AT&W.
3. In multiplex mode, the baud rate cannot be changed by the Write Command AT+IPR=<rate>; and
the setting is invalid and cannot be stored even if AT&W is executed after the Write Command.
4. A selected baud rate takes effect after the Write Commands are executed and acknowledged by OK.
Example
AT+IPR=115200 //Set fixed baud rate to 115200bps
OK
AT&W //Store current setting, that is, the serial communication
speed is 115200bps after restarting module
OK
AT+IPR?
+IPR: 115200
OK
AT+IPR=115200;&W //Set fixed baud rate to 115200bps and store current setting
OK
3.6. AT+QRIR Restore RI Behavior to Inactive
If the RI (ring indicator) behavior is "always", it can be restored to inactive by the Execution Command.
The RI behavior is controlled by AT+QCFG. Please refer to AT+QCFG="urc/ri/ring",
AT+QCFG="urc/ri/smsincoming" and AT+QCFG="urc/ri/other" for more details.
115200
230400
460800
921600
2900000
3000000
AT+QRIR Restore RI Behavior to Inactive
Test Command
AT+QRIR=?
Response
OK
Execution Command
AT+QRIR
Response
OK
NOTES

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