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Sigfox, which raised more than € 300 million in venture capital and had ambitions to build a global communications network through a new approach to wireless networks, has filed for bankruptcy in France. Referring to slow product sales and challenging conditions in the IoT market due to Covid-19.


An Application Programming Interface (API) is a gateway to an existing application (for example, the sim management system of an IoT connectivity application, such as M2M, LTE M or NB-IOT) that makes it possible to make functionality of the application available to other systems. An API thus enables communication between different systems. APIs are designed to populate, restore, update, and delete values. An API takes advantage of web-based protocols such as HTTP and XML.


A Mobile Network Operator (MNO) is a Telecommunications Service Provider that provides wireless voice and data communications to its subscribed mobile customers. MNOs are independent Telecommunications Service Providers that own the complete telecom infrastructure for hosting and managing mobile communications.


The Domain Name System (DNS) is the system and network protocol used on the Internet to translate computer names into numerical IP-addresses and vice versa. DNS is a client-server system: a requester uses the DNS protocol to request a name or address from a provider (DNS server), to which the server returns a reply. Looking up a number by a name is called forward lookup; looking up a name with a number reverse lookup.

For some business cases, where the device mainly receives data from the IoT network and sends virtually no data, the time that the device listens to the network can be adjusted. This arrangement between the device and the network can be extended from every 10 seconds to once every few hours with Extended Discontinuous Reception (eDRX). It lowers battery consumption. The cellular modules can go into a deep, low-power sleep mode (PSM) or only become active (eDRX) when the cellular module needs to connect to the network to transmit data. This results in a significant battery saving. eDRX is available with LTE M and NB-IOT.


Using a Power Saving Mode (PSM) makes it so the cellular module in a device can be put to sleep. During that sleep time, the energy consumption is a few microamperes. The device will not communicate with the network during that time. If the device does want to send data, the cellular module will automatically come out of sleep mode and immediately send the desired data over the network. By arranging this sleeping time as optimally as possible, energy consumption is kept to a minimum. PSM is available with LTE M and NB-IOT.

FQDN is an abbreviation of Fully Qualified Domain Name, and it stands for the most complete domain name for a specific website, computer or server on the Internet. It is also known as the absolute domain name. Where a domain name consists of a registered name plus a domain extension (top level domains), an FQDN is the full name including any subdomains such as “www” in the FQDN “www.thingsdata.nl”.

LPWAN stands for Low Power Wide Area Network. An LPWAN network meets the following criteria: it is a wireless network, which allows communication with the network with low energy consumption. The network has a large range (several kilometers) with a low bit rate.

An LPWAN’s main purpose is to collect information. Although it is often possible to send information in both directions. There are different types of networks that meet these criteria and thus fall under the name LPWAN, such as LoRaWAN, NB-IOT and LTE M.

The capabilities of each simcard form factor are the same, but they each have different dimensions, making them suitable for specific types of devices. 2FF, 3FF and 4FF simcards must be placed in a device, while MFF2 simcards that are vacuum sealed are soldered directly to the printed circuit board. That is why they are also called embedded simcards.

IoT connectivity simcards come in four different forms ranging from 2FF, the largest simcard, to 4FF, or nano simcard, the newest and smallest of the simcards. In addition, there is also a built-in simcard option: the MFF2 (sim chip).

Each generation of simcard is smaller than the previous one. Although they are usually referred to by the generation they originate from (2, 3, 4), they are also referred to as ‘mini simcards’ (2FF), ‘micro simcards’ (3FF), ‘nano simcards’ (4FF) , or called “embedded simcards” (MFF2).


An IoT connectivity simcard or SIM (subscriber identity module) consists of a contact chip that is encased in protective plastic. The contact chip contains the authentication data of a device, which gives the device access to a mobile network.