Modem Application Notes

Applicable Products All ZETA Modems Part number Description ZETA-GEP-LTE4 (EU) Low Power LTE Cat 4 European Modem with GPIO and GNSS ZETA-G-GPRS Entry Level GPRS Modem with GNSS (GL) ZETA-N2-GPRS…

Introduction This application note shows step by step how to test a roaming sim card using a Siretta Modem. NOTE - All Siretta Modems can be used for testing a…

Introduction MQTT stands for Message Queuing Telemetry Transport. It is a simple lightweight protocol for transmitting and receiving data in IoT devices and uses very low power, low data rate…

Introduction MQTT stands for Message Queuing Telemetry Transport. It is a simple lightweight protocol for transmitting and receiving data in IoT devices and uses very low power, low data rate…

How to open Multiple Sockets Connection with Siretta Modems Introduction This application note explains how to simultaneously open up to 10 remote TCP/IP data sockets connecting to multiple destinations using…

CSD Overview Many aging applications in use today utilized the circuit switched dialing (CSD) service available on older style modems and communication devices. The CSD service allows a device to…

This Application Note is designed for customers who are looking to test their GPS antenna performance using a Siretta GNSS Modem. Requirements Siretta GNSS Modem such as ZETA-GEP-LTE4 (EU) PC…

Step 1) Open Hyperterminal (or your preferred terminal emulator) Step 2) Select new connection Step 3) Name your port Step 4) Choose the correct COM port Step 5) Configure the…

Introduction This application note shows how to send an AT command directly to a Siretta Modem using a Mobile phone or SMS relay service. The text messages (SMS) containing AT…

CSD Overview Many applications in use today utilize the circuit switched dialing (CSD) service available on older style modems and communication devices. The CSD service allows a device to dial…