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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 |
Lists revisions and changes made to the document over time.
Defines the document's scope for AT Commands Set for Quectel cellular engines EC25 & EC21.
Explains the structure of AT commands, including prefix, termination, and syntax categories.
Lists supported character sets like GSM, UCS2, and IRA for AT command interface.
Details the recommended procedure for safely turning off the module using AT+QPOWD command.
Command to retrieve the IMEI number of the ME, identical to AT+CGSN.
Resets AT command settings to their factory default values.
Stores current AT command settings to a user-defined profile in non-volatile memory.
Restores AT command settings from the user-defined profile in non-volatile memory.
Controls the functionality level and can be used to reset the UE.
Controls the format of error result codes like ERROR, +CME ERROR, and +CMS ERROR.
Controls the behavior of the UE's DCD (data carrier detection) line.
Determines how the UE responds if the DTR line is changed from low to high level during data mode.
Queries and sets the baud rate of the UART.
Queries the module's activity status (e.g., idle, ringing, in progress).
Queries an extended error and reports the cause of the last failed operation.
Used to query and configure various settings of the UE.
Requests the IMSI to identify the SIM card or active application.
Used to lock, unlock, or interrogate a MT or network facility.
Used to enter a password or query password requirements for SIM/PUK.
Sets a new password for the facility lock function defined by AT+CLCK.
Enables (U)SIM card hot-swap function and detects card insertion.
Queries (U)SIM card insertion status or enables status reporting.
Returns current operators and status, allows automatic or manual network selection.
Returns network registration status and controls unsolicited result code presentation.
Indicates received signal strength (<rssi>) and channel bit error rate (<ber>).
Indicates network information like access technology, operator, and band.
Connects the module to an incoming voice or data call indicated by a RING URC.
Sets up outgoing voice and data calls, and controls supplementary services.
Disconnects circuit switched data calls or voice calls.
Cancels all voice calls in Active, Waiting, and Held states.
Selects bearer service, data rate, and connection element for data calls.
Returns the list of all current calls, including status and details.
Queries, adds, and deletes ECC numbers for emergency calls.
Gets the subscriber's own number(s) from the (U)SIM.
Searches phonebook entries starting with a given text string.
Returns phonebook entries within a specified location number range.
Selects phonebook memory storage for other phonebook commands.
Writes or deletes a phonebook entry in the current memory storage.
Specifies the input and output format of short messages (PDU or text mode).
Deletes short messages from the preferred message storage.
Returns messages with status value from preferred message storage.
Returns SMS message with location value from message storage.
Sends a short message from TE to the network (SMS-SUBMIT).
Stores short messages from TE to memory storage <mem2>.
Sends messages with location value from message storage <mem2> to the network.
Attaches or detaches the MT to or from the Packet Domain service.
Specifies PDP context parameters for a specific context <cid>.
Activates or deactivates the specified PDP context(s).
Establishes communication using packet domain PDP types, entering data state.
Queries EPS network registration status and controls unsolicited result code presentation.
Controls call forwarding supplementary service (registration, erasure, activation, deactivation, status).
Allows control of call waiting supplementary service (activation, deactivation, status).
Controls call hold, multiparty, and explicit call transfer services.
Allows control of Unstructured Supplementary Service Data (USSD).
Selects the volume level of the internal loudspeaker of the MT.
Sends ASCII characters to transmit DTMF tones to a remote subscriber.
Sets the duration of DTMF tones and time interval between tones.
Configures the digital audio interface, including PCM formats.
Sets the uplink gains of the microphone.
Sets RX digital gains to change the downlink volume.
Shuts down the module, deactivates the network, and enters shutdown state.
Sets and queries the real-time clock (RTC) of the module.
Returns battery charge status and battery charge level.
Controls whether the module enters into sleep mode.
Lists related documents used in the manual, such as V.25ter and 3GPP TS standards.
Lists factory default settings for AT commands that can be restored with AT&F.
Lists AT commands whose settings are storable with AT&W.
Lists AT commands whose settings are storable with ATZ.
Provides a summary of CME ERROR codes related to mobile equipment or network errors.
Provides a summary of CMS ERROR codes related to SMS errors.
