Siemens MC39i Cellular Engine AT Command Set

About this manual

The AT Command Set manual provides the complete reference for using AT commands with the Siemens MC39i Cellular Engine. It defines the scope, conventions, and command syntax, and includes safety and legal notices for developers and integrators.

The document is organized into sections covering standard V.25ter commands, fax commands, GSM‑based commands, GPRS commands, SIM Application Toolkit commands, and Siemens‑specific extensions. Appendices list error codes, result codes, and character tables, while tables summarize command parameters and settings.

What's inside

• Introduction
• AT command syntax
• Standard V.25ter AT Commands
• AT Commands for FAX
• AT Commands originating from GSM 07.07
• GPRS AT Commands
• SIM Application Toolkit AT Commands
• Siemens defined AT commands for enhanced functions
• Appendix – Error and Result Codes

Specifications

Frequently asked questions

What is the version of this AT command set document?

The document is version 01.02.

Which command activates a PDP context for GPRS?

Use the AT+CGACT command to activate or deactivate a PDP context.

How can I request the manufacturer identification of the device?

Send the AT+GMI command to request manufacturer identification.

Which command returns the device's serial number (IMEI)?

The AT+GSN command returns the TA serial number identification (IMEI).