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Huawei GTM900 Wireless Module Product Description Manual
This manual introduces the Huawei GTM900 wireless module, covering its product positioning, physical dimensions, key features, and typical applications. It includes a logical block diagram and outlines the module’s role in GSM/GPRS networks.
The document details each interface (UART, SIM card, RTC backup, Audio, LPG), electrical characteristics, power‑on/off procedures, mechanical installation instructions, and a list of abbreviations used throughout the guide. This manual is written in Chinese.
Huawei GTM900 specifications
| Product version | V100R002 |
|---|---|
| BOM code | 31190393 |
| Document version | T1-031993-20051101-C-1.20 |
Source: HUAWEI GTM900 Wireless module AT solutions manual V100R002
All Huawei GTM900 documents by type
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Instruction set, parameters and examples for configuring or programming the device.
Questions answered in these manuals
Which new AT command for DTMF was added in the V100R003 update?
The AT96DTMF command was added to support DTMF tones.
What AT command was introduced for RING tone control?
The AT96RING command was added for RING tone functionality.
How should the GTM900 module be installed?
Install the GTM900 by securing it with metal screws and ensure that all three screws are grounded.
From: Huawei GTM900 Wireless Module Product Description Manual
How can I query the module model?
Use the AT+CGMM command to query the module model.
From: HUAWEI GTM900 Wireless module AT solutions manual V100R002
Which command returns the module firmware version?
The AT+CGMR command returns the module version information.
From: HUAWEI GTM900 Wireless module AT solutions manual V100R002
How can I query the module’s manufacturer name?
Use the AT+CGMI command.