HUAWEI GTM900 Wireless module AT solutions manual V100R002

About this manual

The AT Command Manual is intended for developers and technicians working with the Huawei GTM900 wireless module. It provides command syntax, usage examples, and response codes for configuring and operating the module.

The document is organized into chapters covering AT command overview, GSM standard commands (Rec.07.07, Rec.07.05), ITU‑T V25ter commands, standard GPRS commands, Huawei‑specific extensions, TCP/IP commands, and cluster protocol commands, with tables of command formats and parameter details. This manual is written in Chinese.

What's inside

• AT Command Overview
• GSM Rec.07.07 Standard AT Commands
• ITU‑T Rec.V25ter AT Commands
• Standard GPRS AT Commands
• GSM Rec.07.05 AT Commands
• Huawei Extension AT Commands
• TCP/IP AT Commands
• Cluster Protocol AT Commands

Specifications

Frequently asked questions

How can I query the module model?

Use the AT+CGMM command to query the module model.

Which command returns the module firmware version?

The AT+CGMR command returns the module version information.

How do I set the audio input (MIC) parameters?

Use the AT%NFI command to configure audio input parameters.