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General| Type | GSM/GPRS |
|---|---|
| Data Transfer | GPRS Class 10 |
| Interfaces | RS232 |
| Frequency Bands | GSM 900, GSM 1800, GSM 1900 |
| Operating Voltage | 3.3V - 4.8V |
Defines the scope of the AT Command Set for the MC55 Cellular Engine.
Explains document conventions, including quick reference tables and notation for parameters.
Details the structure, syntax, and rules for using AT commands, including parameters and concatenation.
Explains the supported character sets (GSM alphabet and UCS2) and their implications for text handling.
Discusses flow control essential for preventing data loss or errors during data transfer.
Explains URCs as messages issued by the ME without request, indicating events like incoming calls.
Details features for implementing CPHS Phase 2 prerequisites, mapping features to AT commands.
Explains CME/CMS ERROR codes indicating issues with mobile equipment or network functionality.
Resets all current parameters to manufacturer-defined defaults, terminating any ongoing calls.
Displays the current parameter settings, varying based on PIN authentication and multiplex mode.
Stores current parameters to a user-defined profile in non-volatile memory for later restoration.
Controls ME functionality, including resetting, sleep modes, and returning to full functionality.
Controls "+CIEV" URC presentation related to AT^SIND and AT+CIND, and "^SLCC" URCs.
Controls the presentation of Indicator Event Reports for various functions like battery, signal quality, etc.
Provides greater flexibility for event indicator control, offering extra indicators and status display.
Returns an extended error report detailing the reason for the last call release or setup failure.
Determines the TA's flow control settings, supporting software and hardware handshake.
Defines TA's response to DTR changes during data mode.
Enables partitioning of a serial interface into three virtual channels for multiple sessions.
Controls network authentication by managing SIM PIN entry and password storage.
Used to lock, unlock, or interrogate network or ME facilities like SIM PIN or phone lock.
Retrieves product information text, including version and variant of software release.
Returns the manufacturer identification text.
Retrieves the International Mobile Equipment Identity (IMEI) of the GSM mobile equipment.
Provides information on circuit switched call status via URCs or by listing current calls.
Establishes outgoing voice, data, or fax calls, and controls Supplementary Services.
Terminates any active circuit switched call, PDP context, or PPP connection.
Queries network registration status and allows automatic or manual operator selection.
Verifies GPRS network registration status and provides URCs for status changes.
Indicates received signal strength and channel bit error rate.
Resets or queries the Accumulated Call Meter (ACM) value, used for Advice of Charge.
Manages call forwarding supplementary service: registration, erasure, activation, deactivation, and status.
Enables or disables presentation of CLI for incoming mobile terminated calls.
Creates and edits Internet connection profiles, defining parameters like connection type and APN.
Sets parameters for Internet service profiles, defining service type and connection details.
Starts an Internet session based on a service profile, controlling session based on URC or polling mode.
Activates or deactivates specified PDP contexts for GPRS service.
Attaches the MT to or detaches the MT from the GPRS service.
Specifies parameters for a PDP context identified by a context identifier.
Summarizes parameters for fax-specific AT commands, including modulation schemes and file transfer modes.
Sets the ME to a specific operation mode (data or fax) and reports capabilities.
Defines parameters for SMS commands, covering format, address, and user data.
Specifies the input and output format for short messages (PDU or Text mode).
Reads SMS messages from the preferred storage based on location.
Provides access to SIM Elementary Files, with restricted commands for security.
Controls SIM connection presentation and queries the status of the SIM card.
Activates the AT command interface for the SIM Application Toolkit, essential after power on.
Requests parameters of a Proactive Command for SIM Application Toolkit.
Reads one or more entries from the selected phonebook storage.
Creates, edits, or deletes phonebook entries at a specified location.
Scrolls through phonebook records alphabetically, displaying entries in triplets.
Illustrates the signal path adjustment using various audio parameters and models.
Controls the loudspeaker volume level, usable in specific audio modes.
Mutes the microphone input, usable in all audio modes during a voice call.
Sets and queries the real-time clock of the MC55 module.
Enables presentation of undervoltage URCs and queries battery status.
Monitors the supply or battery voltage of the module.
Lists LED patterns indicating ME operating status when AT^SSYNC parameter <mode>=1.
Repeats the previous command line without needing terminating characters.
Determines the character recognized by the TA to terminate an incoming command line.
Determines the character generated by the TA for result code and information text.
Determines the character recognized by TA to delete the immediately preceding character.
Describes access restrictions to SIM data after SIM PIN authentication is performed.
Lists AT commands and their availability based on SIM PIN status.
Details AT command availability based on the ME's operating mode and charge state.
Lists configuration commands and their stored parameters for user profiles on ASC0/MUX Channel 1.
