what is ip technology?
internet Protocol Telephony (IP Telephony) is the use of IP-based networks to build, provide and access voice, data or other forms of telephonic communications. IP telephony provides traditional telephonic communication over an IP-based network, the Internet - via an Internet service provider (ISP) - or directly from a telecommunications service provider.
What is Voice over IP (VoIP)?
voice over IP (VoIP) is the most common method for placing phone calls over the Internet. Traditionally phone calls were sent as analog signals through telephone lines. With VoIP, your call is converted into data that is sent over the Internet: Audio is sent over IP (Internet Protocol). This is the same technology that allows us to browse websites on the Internet.
How does an Internet Phone System Work?
In order to use an Internet phone system, it is necessary to have a VoIP solution such as the NFON Cloud Telephone System.
As you speak through a microphone (laptop, mobile or headset) your voice - the audio signal - is digitised. This data is split into packets and given individual labels.
our call is made up of different packets of data. Each packet of data travels over the Internet to the recipient. When the data arrives at the end destination it is put back into the correct order. The data is then converted into audio and the recipient hears what you said.
Interestingly, the data packets don’t necessarily arrive in the order they were sent: they can overtake each other en route. When then arrive they are reassembled in the correct order and your message can be heard by the recipient.
IPv4 Addresses
IPv4 addresses are actually 32-bit binary numbers, consisting of the two subaddresses (identifiers) mentioned above which, respectively, identify the network and the host to the network, with an imaginary boundary separating the two. An IP address is, as such, generally shown as 4 octets of numbers from 0-255 represented in decimal form instead of binary form.
For example, the address 168.212.226.204 represents the 32-bit binary number 10101000.11010100.11100010.11001100.
The binary number is important because that will determine which class of network the IP address belongs to.
An IPv4 address is typically expressed in dotted-decimal notation, with every eight bits (octet) represented by a number from one to 255, each separated by a dot. An example IPv4 address would look like this.
IPv4 addresses are composed of two parts. The first numbers in the address specify the network, while the latter numbers specify the specific host. A subnet mask specifies which part of an address is the network part, and which part addresses the specific host.
A packet with a destination address that is not on the same network as the source address will be forwarded, or routed, to the appropriate network. Once on the correct network, the host part of the address determines which interface the packet gets delivered to.
IPv6 (Internet Protocol Version 6)
IPv6 (Internet Protocol version 6) is a set of specifications from the Internet Engineering Task Force (IETF) that's essentially an upgrade of IP version 4 (IPv4). The basics of IPv6 are similar to those of IPv4 -- devices can use IPv6 as source and destination addresses to pass packets over a network, and tools like ping work for network testing as they do in IPv4, with some slight variations.
