Quectel EC25 User Manual

LTE Module Series
EC25&EC21 AT Commands Manual
EC25&EC21_AT_Commands_Manual 38 / 231
RING
AT+CLCC
+CLCC: 1,1,4,0,0,“15695519173”,161
OK
AT+CPAS
+CPAS: 3 //The module is ringing
OK
AT+CLCC
+CLCC: 1,0,0,0,0,“10010”,129
OK
AT+CPAS
+CPAS: 4 //Call in progress
OK
4.2. AT+CEER Extended Error Report
The command is used to query an extended error and report the cause of the last failed operation, such
as:
 the failure to release a call
 the failure to set up a call (both mobile originated or terminated)
 the failure to modify a call by using supplementary services
 the failure to activate, register, query, deactivate or deregister a supplementary service
 the failure to attach GPRS or the failure to activate a PDP context
 the failure to detach GPRS or the failure to deactivate a PDP context
The release cause <text> is a text to describe the cause information given by the network.
AT+CEER Extended Error Report
Test command
AT+CEER=?
Response
OK
Execution command
AT+CEER
Response
+CEER: <text>
OK
ERROR
If error is related to ME functionality:

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