Modem Application Notes

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…

Circuit switched networks physically connect two endpoints together using a communication channel through the network. This utilises a fixed bandwidth for the session whilst the two endpoints remain connected. Packet…

Introduction VoLTE uses 4G (LTE) technology to transfer voice audio from one point to another using digital packets as opposed to 3G (UMTS) and 2G (GSM) networks which transfer voice…

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…

GPRS Connection //Set extended error messages AT+CMEE=2 //Set GPRS APN Name AT+CGDCONT=1,”IP”,”APN Name” Outgoing Connection //Set packet size and timeouts on context 1-6 AT#SCFG=1,1,300,90,600,50 //Open GPRS context 1-6 with GPRS…

Python Debug Application Module Configuration //Connect via HyperTerminal or similar to the COM port //Set extended error messages AT+CMEE=2 //Set trace port to local AT#SSCTRACE=0 //Set CMUX to 115200 baud…