HUAWEI ME909u-521 LTE LGA Module

 

 

 

 

Application Guide

 

 

Phonebook Application Scenarios

 

 

 

 

 

 

 

 

 

 

 

 

Scenario

 

 

Possible Error

 

 

Solution

 

 

 

 

 

 

 

 

 

 

 

Information

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

commands.

 

+CME ERROR: SIM

 

 

Enter the correct PIN.

 

 

 

 

 

 

 

 

 

 

 

 

PIN required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

+CME ERROR: SIM

 

 

Enter the correct PUK.

 

 

 

 

 

PUK required

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error information is

 

 

 

 

 

 

 

 

returned when writing an

 

+CME ERROR: dial

 

 

Check that the phone

 

 

entry into the

 

string too long

 

 

number is not too long.

 

 

phonebook.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error information is

 

 

 

 

Check that the location index

 

 

returned in response to

 

+CME ERROR: invalid

 

 

 

 

 

 

 

and phone number type are

 

 

one of the previous

 

index

 

 

 

 

 

 

 

valid.

 

 

commands.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Error information is

 

 

 

 

The phone number to be

 

 

 

 

 

 

written into the phonebook

 

 

returned when writing an

 

+CME ERROR: invalid

 

 

 

 

 

 

 

contains invalid characters.

 

 

entry into the

 

characters in dial string

 

 

 

 

 

 

 

Delete the invalid characters

 

 

phonebook.

 

 

 

 

 

 

 

 

 

 

and try again.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

AT+CPBW=,"123456789

 

+CME ERROR:

 

 

The storage is full. Delete

 

01234567890123",128,"

 

 

 

 

 

 

 

memory full

 

 

some entries and try again.

 

 

80534E4E3A"

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6.4 Searching for Phonebook Entries

6.4.1 Reference Process

Command

Description

 

 

AT+CPBF=<findtext>

Search the current storage for

 

phonebook entries that contain

 

the <findtext> field.

 

 

+CBPF: <index1>,<number>,<type>,<text>

 

+CBPF: <index2>,<number>,<type>,<text>

 

...

 

OK

 

 

 

AT+CPBF=?

Return the maximum phone

 

number length and maximum

 

name length supported by the

 

current phonebook storage.

 

 

+CPBF: <nlength>,<tlength>

Issue 01 (2013-07-05)

Huawei Proprietary and Confidential

42

Copyright © Huawei Technologies Co., Ltd.

 

 

Page 42
Image 42
Huawei ME909u-521 manual Searching for Phonebook Entries, AT+CPBF=findtext, At+Cpbf=?, +CPBF nlength,tlength

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.