HUAWEI ME909u-521 LTE LGA Module

 

Application Guide

SMS Application Scenarios

5.4 Reading Short Messages

5.4.1 Reference Process

Command

Description

 

 

 

 

AT+CMGL=0

List all received unread messages.

 

 

 

 

+CMGL: 2,0,,48

 

 

0891683108608805F9040D916831

The format of short messages can refer to

 

09732097F2000001432619001001

the AT+CMGL command.

 

F506215744FD3D1A0E930C8429

 

 

6D9EC370BFDE86C2F23228FFA

 

 

EFF00

 

 

+CMGL: 4,0,,64

 

 

0891683108608805F9040D916831

 

 

09732097F2000001403261310500

 

 

32506215744FD3D1A0E930C8429

 

 

6D9EC370BFDBE83C2B0380F6A

 

 

97416FF7B80C6AVFE5E510

 

 

OK

 

 

 

 

 

AT+CMGR=4

Read the message stored in the message

 

 

storage location 4.

 

 

 

 

 

 

+CMGR: 1,,64

 

 

0891683108608805F9040D916831

The format of short messages can refer to

 

09732097F2000001403261310500

the AT+CMGR command.

 

32506215744FD3D1A0E930C8429

 

 

6D9EC370BFDBE83C2B0380F6A

 

 

97416FF7B80C6AVFE5E510

 

 

OK

 

 

 

 

 

There are two methods to read short messages:

Method 1: Use the AT+CMGL command to list the messages that are in specified state and stored in the preferred message storage. The following table describes the message states. If the message sate is received unread messages, the REC UNREAD state will be changed to REC READ after the AT+CMGL command is executed.

Message State

PDU Mode

 

 

Received unread messages

0

 

 

Received read messages

1

 

 

Stored unsent messages

2

 

 

Stored sent messages

3

 

 

Issue 01 (2013-07-05)

Huawei Proprietary and Confidential

32

Copyright © Huawei Technologies Co., Ltd.

 

 

Page 32
Image 32
Huawei ME909u-521 manual Reading Short Messages, AT+CMGL=0, EFF00, AT+CMGR=4, Message State PDU Mode

ME909u-521 specifications

The Huawei ME909u-521 is a cutting-edge module designed to meet the increasing demand for mobile broadband connectivity in various industrial and commercial applications. This compact and robust device is primarily used for M2M (Machine-to-Machine) communication and IoT (Internet of Things) solutions. It supports a wide range of features and technologies that make it a versatile choice for businesses looking to enhance their operational efficiency through cellular connectivity.

One of the key features of the ME909u-521 is its support for multiple frequency bands. It is compatible with 4G LTE networks, ensuring high-speed data transmission and reduced latency. This capability allows for seamless communication in various environments, making it an ideal solution for applications such as smart cities, telematics, transportation, and remote monitoring.

In addition to LTE capabilities, the ME909u-521 also supports 3G and 2G networks, providing fallback options in areas where 4G coverage may be limited. This multi-network support guarantees reliable connectivity, which is crucial for mission-critical applications. The module is designed to maintain stable connections even in challenging conditions, such as in-motion environments or areas with fluctuating signal strengths.

The Huawei ME909u-521 features a compact form factor, making it easy to integrate into a wide range of devices and applications. Its small size reduces the overall footprint, which is particularly advantageous for space-constrained installations. Furthermore, the device is equipped with advanced power management features that help optimize energy consumption, extending the lifespan of connected devices.

For enhanced security, the ME909u-521 integrates robust encryption protocols to protect data transmission over mobile networks. Security is a top priority for M2M and IoT applications, and this module ensures secure communication by adhering to global standards and best practices.

Another notable characteristic is its extensive support for various interfaces, including UART and USB, facilitating seamless integration with different hardware systems. This flexibility allows developers to quickly implement and scale their solutions based on specific project requirements.

Overall, the Huawei ME909u-521 is a powerful connectivity module that combines high-speed communication, versatility, and reliability. With its state-of-the-art technologies, it is well-suited for a wide array of applications, making it a valuable asset for businesses looking to advance their digital transformation initiatives. Whether utilized in smart grids, remote monitoring, or intelligent transportation systems, the ME909u-521 stands out as a leading solution in the M2M and IoT landscape.