thanks for the reply much appreciated.
On CatM1 it is confirmed that SMS is available by Orbcomm in USA for Verizon and they say the same for AT&T we will be 100% sure next week when we test it with both providers. In Europe Vodafone advertises SMS on the NB1 network but they don’t work in various countries, so this is why I am asking. The response from the modem is error 311 - service not available by provider. SMS has a number of advantages that make it the N1 approach for some applications, especially alarming related. Our core business is ultra low power battery powered devices and in this field SMS is by far the most reliable means of communication.
FTP is an application protocol which simplifies many things especially security related and when you want to sent 100-200 Kbytes of data once per day it is a very reasonable way to do it.
The transfer rates of LTECatM1 is 375kb/s-1Mbs and NB1 is 50kbps its more than enough for 20-30 lines of measurements.
The reason we approach these technologies is the lifecycle compared to 2G, 3G, 4G and 5G. The providers claim this layer will not be phased out. So in this respect we expect the minimum from them which is SMS and a few kilobytes of data per day at least. If we wanted a few bytes per message there are other narrow band technologies which we also have products using them.
When is the FTP expected ?
Is there a Beta we can try ?
We have version 2.4 right now which has “features”. It takes about 40-50 seconds to register to the Vodafone NB1 network.
Also I don’t know if you can comment we discovered a peculiar behavior in some HL7800 modems. We have some that cannot be upgraded more than version 2.1. We tried to take them to 2.4 and they do not respond to AT commands anymore.
They can be downgraded and then they work.