The correct answer is: B. Internet Telephony
Internet telephony, also known as voice over Internet Protocol (VoIP), is a method of communication that uses the Internet to transmit voice data. It is a more efficient and cost-effective way to make phone calls than traditional landline or mobile phone services.
Internet telephony works by converting voice data into digital signals that can be transmitted over the Internet. These signals are then decoded at the receiving end and converted back into sound.
There are many benefits to using Internet telephony. It is often cheaper than traditional phone services, and it can be used to make calls to any phone number in the world. Internet telephony is also more reliable than traditional phone services, as it is not affected by power outages or other disruptions.
There are a few things to keep in mind when using Internet telephony. First, you will need a high-speed Internet connection to make and receive calls. Second, you will need to have a VoIP-enabled phone or computer. Third, you may need to pay for a VoIP service plan.
Overall, Internet telephony is a convenient, affordable, and reliable way to make phone calls. If you are looking for a new way to communicate, Internet telephony is definitely worth considering.
Here are some additional details about each of the options:
- A. E-Telephony: E-telephony is a general term for any type of telephony that uses electronic means to transmit voice data. This includes both Internet telephony and traditional landline and mobile phone services.
- B. Internet Telephony: Internet telephony is a specific type of e-telephony that uses the Internet to transmit voice data. It is a more efficient and cost-effective way to make phone calls than traditional landline or mobile phone services.
- C. Chatting: Chatting is a form of communication that allows two or more people to exchange messages in real time. This can be done through a variety of methods, such as instant messaging, text messaging, or video chat.
- D. E-Calling: E-calling is a term that is sometimes used to refer to Internet telephony. However, it is more commonly used to refer to a type of e-telephony that uses a computer to make and receive phone calls.