This application note describes how to design a Dual SIM solution without using the SIM detection pin of the module.

This Application Note describes the audio design guidelines to optimize the implementation of hardware, gains and algorithms tuning of the AirPrime SL808xT, SL808xBT, and SL808xBTA embedded module.

This application note reviews each objective with its associated requirements and then details design rules for successful Sierra Wireless mobile devices integration, with a particular focus on PCB design. It is recommended to read this application note before starting a design as its provided guidance can contribute to save time and money by reducing the number of PCB iterations before final certification and market introduction.

This Application Note presents the steps to set up a PPP connection in Linux Operating System using the Sierra Wireless embedded module. As Windows® and Linux® have different procedures for creating a PPP connection, this application note provides details about the process for Linux environment. The steps to create the connection are well supported with images to graphically depict those steps.

The Antenna Switch function enables switching between two antennas and can be implemented on customer application.This application note describes how to design a GSM antenna switch, from component selection to PCB implementation. This switching function can be used with an antenna detection system.

GPS receivers of Sierra Wireless AirPrime modules can be connected to a passive antenna (which should be physically located very close to the unit) or a remote active antenna containing an LNA, which will both improve SNR and compensate for any cable/insertion losses. This application note describes the use of the integrated GPS active antenna powering function when available, and how to design an external powering circuit where required.

This application note presents the recovery mechanism of the Open AT Application Framework. The goal of the mechanism is to avoid infinite and uncontrolled reset loops in the firmware.

This application note describes how to interface an external battery charging solution with an AirPrime wireless module. It is useful if you have the following requirements: Measured current consumption Different modules' operating modes Different scenarios. This application note will be useful for those customers who want to obtimize the size and the capacity of the battery to be used.

This application note describes how to interface an external battery charging solution with an AirPrime wireless module. It is useful if you have the following requirements: Li-Polymer battery used Possible drops of the battery voltage below its over discharge threshold (~2.8V) Only a DC voltage source available to charge the battery (impossible to connect an external charger)

The purpose of this application note is to provide a first level of suitable information to select and implement a power supply solution for a GSM application.

This application note explains how to set up an SSL-secured communications channel with an Apache server.

The Open AT Source code example allows to use the file system to store application data using AT commands.

This Application Note describes the hands free solution available on AirPrime Q26 and WMP Series, and the SL6087 module. A brief explanation of the hands free solution is followed by a detailed presentation covering the following: Overview and block schematic Parameters explanation Tuning guidelines and default parameters

This application note provides design considerations for PCS1900 band OTA desensitization.

This Application Note describes the general structure of the Real Time Operating System implemented in Sierra Wireless modules, the RTOS features extended to developers and their restrictions, limitations and best practices to be followed when using the RTOS features.

This application note describes how to design a dual SIM solution. This function is used to switch between two SIMs. Two GPIOs are used to control the hardware switching between two SIMs.

AT Command Parser source code demonstrates and provides re-usable code showing how to subscribe and parser responses to both unsolicted and sent AT commands.

Simple Open AT sample code giving an example of managing a TCP Client socket.

This application note provides an introduction to MMS to educate the reader on the system architecture, and then explains how to use it on Sierra Wireless products.

This document gives an overview on using a private DNS server to resolve domain name on an AirPrime module.