Frequently Asked m2m / IoT Questions
What is the definition of M2M?
M2M is an abbreviation for Machine to Machine. With little involvement from humans, M2M technology allows communication between machines to run more reliably, efficiently, and affordably. This is achieved by using telemetry, which is a language used by machines when speaking to one another.
The hardware and software that enable physical devices to connect, also collects data that is incorporated into IT systems. This data provides valuable information that helps B2C and B2B monitor and optimize their businesses.
What is a SIM?
SIM or Subscriber Identity Module is a removable smart card that stores the service subscriber key, often abbreviated as IMSI. The service subscriber key and authentication codes are used to identify a subscriber’s mobile telephony device (computer) and mobile phones.
What is an APN?
APN is a common name for an access point on HSDPA/HSUPA/GPRS/3G/4G/.
There are three types of access points:
1). Internet network where a mobile device can connect.
2). The settings used to make that connection.
3). A specific configuration in a group of settings on a mobile phone.
What is an Public APN?
All network providers have a Public APN. After a SIM card is enabled for data from GPRS/3G/4G or any other mobile telecommunication technology, the Public APN is added by default. The Public APN has no limitations on users and is open to use by everyone.
What is a Private APN?
With a Private APN a customer has direct access to their LAN and can specify specific parameters like the private address space allocated to the devices & RADIUS server attributes used for user authentication. This APN also allows users to access the internet.
What are the Benefits of a Private APN?
Security is one of the key benefits to a Private APN. By staying completely on a GPRS/3G, you’re exposure to external threats, such as viruses and spammers, is almost eliminated.
Another benefit of a Private APN is the lower complexity of the communication path, which also reduces chance of system failure.
What is an IP Address?
Think of it as an address for your internet connected devices. An IP address is a unique identification number assigned to every machine that interfaces with the internet. An example of an IP address looks like: 220.127.116.115
The decimals used to express IP addresses are used primarily to aid in recall of the numbers. Think of it as an international telephone number. First you have the country code, then you have the area code, and finally a regional prefix. With an IP address, data can be sent to any machine.
What is a Public IP Address?
A public IP address is an IP address visible to anyone. Since these IP addresses are public, other people can find and access devices, like a Web server.
What is a Private IP Address?
An IP number that lies within the IP address ranges designated for private use by the Internet standards groups. The ranges reserved for Private IP addresses are:
10.0.0.0 through 10.255.255.255
169.254.0.0 through 169.254.255.255 (APIPA only)
172.16.0.0 through 172.31.255.255
192.168.0.0 through 192.168.255.255
Private IP addresses are normally used on local networks such as schools, home and business LAN’s including many hotels and airports. Devices that have private IP address are unable to directly access the internet. Similarly, computers beyond the local network are unable to connect to a device with a Private IP address. The alternative lets these devices access the internet through a brokered router or similar device that is capable of supporting NAT or Network Address Translation. This acronym conceals the Private IP numbers, but allows selective exchange of messages between devices, adding another layer of security to the local network.
What is a Fixed IP Address?
Sometimes referred to as a static IP address, a fixed IP address is an address assigned to a computer by an Internet service provider (ISP) and is its permanent address on the Internet.
IP addresses are used by computers to locate and communicate with each other while on the internet. This process is similar to how we use our telephones to communicate and locate businesses and friends. Like a phone number, an IP address will be the same no matter the frequency it connects/disconnects from a network.
What is a Dynamic IP Address?
What is the Advantage of a Public IP Address Over a Private IP Address?
This represents a potential security threat to the customer, and if you have a 3G/GPRS router it is strongly advised to set up a logon page to stop unauthorized access.
What is the Advantage of a Private IP Address Over a Public IP Address?
What is a VPN Tunnel?
What is a Site-to-Site VPN Tunnel?
This enables any machine or machines using a company’s LAN to connect to any of their devices using our M2M SIMs. This VPN connection is an always-on type. If a customer wanted to create a site-to-site tunnel, the customer would require a hardware firewall/router capable of setting up an IPSEC VPN tunnel.
What is the Netextender VPN Client?
This will create a VPN tunnel from the client’s machine to the devices that have the SIM cards. When the client has disconnected, the VPN tunnel will break. It doesn’t matter where any machine is once it has the VPN client installed. It will now be able to access the devices with private IP addresses.
What is GPRS?
GPRS is packet based so you can stay online for an endless amount of time because only downloaded data is observed with this service.
What is 3G?
What is 4G?
What is HSDPA/HSUPA?
High-Speed Uplink Packet Access (HSUPA) is a 3G mobile telephony protocol with up-link speeds up to 5.76 Mbit/s in the HSPA family.
What is GSM?
Developed originally for operation in the 900MHz band. Modified for the 850, 1800 and 1900MHz bands. At one time GSM stood for Group Special Mobile, the CEPT committee which started the GSM standardization process.
What is a HLR?
Why does my SIM Card Disconnect the Network after Different Time of Idle?
• Lack of radio access
• Roaming network initiated close (i.e. the network that you are roaming on is using a shorter timeout)
• Application closed access (Hang up)