What is IP?

The Internet Protocol (IP) is the primary set of wireless message protocols (or networking protocol) and guidelines for exchanging messages among computers over one network or a collection of interrelated networks, making use of the Internet Protocol Suite called TCP/IP. Messages are shared as datagrams, also known as data packets or simply packets.

IP is composed of four abstraction layers: bridge layer (lowest), internet layer, transport layer and (highest) device layer. The key aim and function of IP are to transmit datagrams based on their addresses, from the source host (source computer) to the destination host (receiving computer). To do this, IP provides methods and mechanisms for placing tags within datagrams, that is, address information, which is part of metadata).

What is Internet Telephony?

Internet telephony refers to all aspects of conventional telephony (phone calls, faxes, voicemail, etc.) where all calls and data are transmitted over the internet, rather than over traditional landlines. 

Internet telephony and voice over IP (VOIP) although used synonymously differ. Internet telephony applies to all internet telecommunications networks, voice over IP is one of those networks, a particular way of placing online telephone calls.

How does IP Telephony Work?

IP telephony uses “Internet Protocols” to connect over the Internet through wireless means. The business owner will take advantage of an internet connection and the associated hardware and software to collaborate more easily by using this device rather than conventional communication systems. Throughout enterprise environments, technology is gradually being used to further boost corporate efficiency and reduce operating costs.

IP Telephony Work

IP telephony uses “Internet Protocols” to connect over the Internet through wireless means. The business owner will take advantage of an internet connection and the associated hardware and software to collaborate more easily by using this device rather than conventional communication systems. Throughout enterprise environments, technology is gradually being used to further boost corporate efficiency and reduce operating costs.

To use an internet telephony network, a VOIP solution such as the Btelecoms cloud telephone system has to be in operation. Your voice – the audio sound – is digitized when you talk into a microphone (laptop, smartphone or headset); these data are broken down into packets and given individual labels. Your call consists of different data packets. Every data packet passes to the receiver through the Internet. Once the data hits the destination point it is put back in the proper order. The data will then be translated into audio, and the listener will hear what you have said. Ironically, the data packets do not automatically arrive in the order they were delivered – they will pass each other on the path. They are then reassembled in the proper order until they arrive so the receiver can hear the message.

What are the Types of Internet telephony?

There are many applications for Internet telephony. Some come bundled with common Web browsers. Others are autonomous products. Internet telephony products are often referred to as IP telephony products, Voice over the Internet (VOI) products, or Voice over IP products.

Internet telephony is classified into three major categories: 

  • PC-to-PC telephony
  • PC-to-PC telephony
  • Phone to Phone

PC-to-PC Calling

PC-to-PC telephony allows you to call another user who is online at the same time, using the same (or compatible) telephony software. You will need compatible applications, a microphone and speakers or a headset for laptop and Internet connectivity to use your PC to talk to another person using your PC. PC-to-PC telephony is free — you should never have to pay to make those calls, irrespective of where the person you wish to connect with is.

PC-to-PC telephony lacks the clean, transparent standard you usually get with normal phone lines, but the trade-off is, of course, that you won’t pay for using it. It makes it a common alternative for family and friends who live outside the local telephone calling connections to each other.

Today there are myriad choices of applications, many of them free, that offer simple PC-to-PC calling. It’s important to note that the person you’re calling would require compatible software, so agreeing on a free program beforehand is wise. These communication channels have voice communication services built in for those who use instant messaging programs.

How Pc-to-PC calling works

The application program translates the speech transmitted into data packets and routes it over the Internet. The receiving client transforms the data packets into voice signals that are received over the headphones or speakers at the receiving end.

PC to phone Calling

PC to phone lets you make daily phone calls from your computer. The system involves calling from PC to PC. To use Telephone-to-Phone systems, you need the same Telephone-to-Mobile calling equipment; speakers and microphones and Internet connection.

How Computer-to-Phone Works

The Computer user’s PC is the originating gateway that transforms voice transmission into internet data packets. The data packets are converted to voice signals at the destination gateway provided by the distributor of the software, and routed to the Public Switched Telephone Network (PSTN). The PSTN then routes the call to the receiver’s cell, as will be the case for normal phone calls.

Phone-to-phone calling

Phone-to-phone telephony also enables telephone calls to be made over the Internet, but significantly varies from other Internet telephony types. Phone-to-phone telephony does not require that users have special apps to use, or even a computer. Mobile to mobile uses all ends of conventional telephones.

You need to have an Internet Telephony Service Provider (ITSP) to make phone-to-phone calls. The ITSP will have gateways in different areas across the globe. If you make a call, the call is routed over the Internet to a portal that is the nearest to the party receiving it. The gateway would then forward the call to the standard telephone of the receiving party over the PSTN. 

How Phone-to-Phone Calling Works

Users with Internet telephone connections make a call from their devices. The voice signals will be digitized, compressed and converted to packets of data. When the data packets arrive at the gateway, they are voice signals again. Once the voice signals are converted, they are then transmitted to the receiver via local PSTN.

How can IP telephony enhance your business?


The phone companies charge for every minute of call time when you make a call on a standard phone line. Everything adds up for companies, as there can be hundreds, if not thousands, of phone calls every day. Monthly plans for cellular phones typically come with a restricted number of minutes, except when the customer has an unlimited plan. When a person exceeds their minutes the following month they are charged more. When someone has a prepaid phone plan they need to add extra minutes before they run out. 

The only charges that occur monthly with an IP, particularly VoIP, are from internet service providers. For a business these savings add up quickly, particularly for a landline phone at 7 cents per minute.


Because businesses subscribing to a landline service have to pay for each telephone line, as well as for how long each employee is on an outbound call, they are also restricted by the number of telephone lines they can afford.

No such limitations apply to IP telephone systems. If a company needs to install another phone line, all they need to do is install an IP phone to their network, so they don’t need to think about the cost of an extra phone line. IP is wireless, so all call routings are cloud-based. That means your company doesn’t have to have a dedicated call center to answer calls. In addition, IP is extremely versatile, so a remote worker on the other side of the country or the globe can manage calls.

Worldwide connectivity

Because IP is wireless and portable, the advantages of recruiting workers who can work remotely are seen by more employers. That’s always seen on both sides as a win-win situation. 

Working from home has many advantages for the workers. Not only do they not have to deal with getting stuck in traffic, but they also save their vehicle on petrol, wear and tear of commuting to work daily.

Keeping workers at home reduce operating expenses for companies, allows for smaller office spaces and makes staff more efficient. Businesses will also save on the cost of office supplies because they do not have to think about the weather that keeps workers from commuting to the workplace.

Versatility features

There are several features that make IP phone systems exciting, effective and successful to use. If you receive a voicemail you can send the voicemail with just one click to three other users. There is also a function where, before the phone is answered or the call goes to voicemail, the individual is automatically called on a list of numbers. The first two rings will go to the telephone in the office and the next three to the car.

Simple to integrate

IP telephone services is very easy to integrate into existing infrastructure of the company. Faxes can be sent via email with IP phone services, and credit card information is transmitted even faster via the network. As it is quicker, efficiency within the labor force would be greatly increased. This also allows for better customer service, because information can be generated, submitted and received at a faster rate.

Improved mobility

If there’s a need for an employee to relocate to another desk, or if an office is hot-desking, then the wise option is IP telephony. Employees can operate remotely from anywhere in the world with IP Telephony. These have to be re-patched at the new site with conventional landline extensions. All they have to do with an IP phone device is get their phone to their new desk.

Better conferences

Unlike conventional landline phones, conferencing capability is factored into the price of the IP phone service. Conferencing capability for conventional landline telephones is always an added feature that costs extra. IP telephones provide video conferencing features and provide better images than conventional forms of video conferencing.

Why Choose BTelecoms for your IP Telephony Solutions?

Technology is progressing and evolving at a rapid fire pace and companies and customers alike have managed to keep up with the rate – even as far as the company’s telephone network is concerned. With the advent of IP telecommunications technology, and the early phasing out of landline phones, companies would be left on the roadside if they have not converted to IP by then.

Do not be left behind, contact BTelecoms today and get started.


Internet Protocol address, also known as IP address, is the unique number assigned to a device when connected to the Internet.

An IP address is used to identify the sender and receiver of information in HTTP protocols.

Like every other call your phone will ring.

IP telephony enables you to make several calls simultaneously over your Internet connection without the need to buy additional telephone lines. The number of potential calls depends on how much bandwidth you have, and the policies of your Service Provider.

You can normally call someone anywhere in the world.

You dial the number, as you usually would.

Normally, if a call goes from your VoIP phone to another VoIP phone on the network of the same service provider, it would be a free-no matter where the two phones are in the world. Calls sent to cell phones or regular landlines may generally be subject to charge but are typically less costly than standard telephony.