Huawei GTM900 V100R003 Version Update Manual

About this manual

The document provides a detailed description of the GTM900 V100R003 firmware release, including version numbers, supported TCP/IP features, and AT command enhancements. It outlines the changes compared with previous releases and specifies the new capabilities added to the device.

Key updates include added DTMF, RING, and CTONE AT commands, expanded UDP and DNS handling, and various bug fixes such as improved SIM/PUK handling and corrected data overflow issues. The release notes also mention hardware‑related improvements to reduce ESD risk and enhance signal integrity. This manual is written in Chinese.

What's inside

• Version Updates
• New AT Commands
• TCP/IP Enhancements
• Bug Fixes
• SIM/PUK Handling
• UDP and DNS Improvements

Frequently asked questions

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 does the V100R003 update improve SIM activation handling?

It adds prompts for PIN/PUK entry and improves activation error handling.

What bug was fixed regarding data overflow in the new version?

A bug causing data overflow during direct data transmission was corrected.