Skip to content
geeksforgeeks
  • Tutorials
    • Python
    • Java
    • Data Structures & Algorithms
    • ML & Data Science
    • Interview Corner
    • Programming Languages
    • Web Development
    • CS Subjects
    • DevOps And Linux
    • School Learning
    • Practice Coding Problems
  • Courses
    • DSA to Development
    • Get IBM Certification
    • Newly Launched!
      • Master Django Framework
      • Become AWS Certified
    • For Working Professionals
      • Interview 101: DSA & System Design
      • Data Science Training Program
      • JAVA Backend Development (Live)
      • DevOps Engineering (LIVE)
      • Data Structures & Algorithms in Python
    • For Students
      • Placement Preparation Course
      • Data Science (Live)
      • Data Structure & Algorithm-Self Paced (C++/JAVA)
      • Master Competitive Programming (Live)
      • Full Stack Development with React & Node JS (Live)
    • Full Stack Development
    • Data Science Program
    • All Courses
  • Aptitude
  • Engineering Mathematics
  • Discrete Mathematics
  • Operating System
  • DBMS
  • Computer Networks
  • Digital Logic and Design
  • C Programming
  • Data Structures
  • Algorithms
  • Theory of Computation
  • Compiler Design
  • Computer Org and Architecture
Open In App
Next Article:
Voice over Internet Protocol (VoIP)
Next article icon

Voice over Internet Protocol (VoIP)

Last Updated : 27 Nov, 2024
Comments
Improve
Suggest changes
Like Article
Like
Report

Voice over Internet Protocol (VoIP) is transforming the way we communicate by enabling voice calls over the Internet instead of traditional phone lines. This innovative technology converts your voice into digital data packets, which are transmitted via broadband connections. VoIP not only offers significant cost savings on both domestic calls and international calls but also provides a suite of advanced features such as call forwarding, voicemail-to-email, and video conferencing.

In this article, we will explore what VoIP is, how it works, and the benefits it brings to both individuals and businesses, making it a compelling choice for modern communication needs.

What-is-VoIP
What is Voice over Internet Protocol (VoIP)

What is VoIP?

Voice over Internet Protocol (VoIP) is a technology that allows voice communication over the internet. By converting voice signals into digital data packets, VoIP enables users to make calls from computers, smartphones, or VoIP phones. Key benefits include lower costs for long-distance calls, additional features like video conferencing, and the flexibility to communicate from anywhere with an internet connection. VoIP has revolutionized communication by providing versatile and cost-effective voice services.

How Does Voice Over Internet Protocol (VoIP) Works?

Voice is converted into a digital signal by VoIP services that travel over the Internet. If the regular phone number is called, the signal is converted to a regular telephone signal i.e. an analog signal before it reaches the destination. VoIP can allow you to make a call directly from a computer having a special VoIP phone or a traditional phone connected to a special adapter. Wireless hot spots in locations such as airports, hospitals, cafes, etc allow you to connect to the Internet and can enable you to use VoIP service wirelessly. 

How Does Voice Over Internet Protocol (VoIP) Works?

Equipment Required in VoIP

  • An Internet connection must be very high to use VoIP services.
  • Internet access can be via cable modem or LAN and other high-speed services.
  • Users need compatible devices, such as computers, adapters, or special VoIP phones.
  • Some VoIP services only work through a specific computer or VoIP phone.
  • Other services give you the option of using a traditional phone that comes with a VoIP adapter.
  • Computer-based tests require inexpensive software and microphones.
  • VoIP phones can be connected directly to a broadband connection.
  • They work like traditional telephones.
  • Using a phone with a VoIP adapter, users can dial numbers as usual.
  • In such cases, the service can provide a voice call.

Evolution of VoIP Service

VocalTech, a firm, introduced the first VoIP service in 1995. The business introduced the InternetPhone, the aptly named first Internet-based phone. There was no video functionality included, and to communicate, both users had to be signed into the same piece of software.

Early VoIP services frequently had call drops and distortions, making for a bad user experience. But until Skype's 2003 debut, which made VoIP appealing and useful for regular users, the service continued to get better. This made it possible for video conversations and landline calls to be made with far better sound quality, all for free.

Millions of administrators and office professionals started working remotely as a result of the COVID-19 pandemic, which was another benefit for the VoIP sector. With teleconferencing becoming the new standard for the typical workplace, VoIP and related services like Zoom became even more important for office administration.

Local Call vs Long Distance Call

Certain VoIP service providers give their services without charge, usually limited to calls made to other service customers. You might be able to choose an area code that is different from the one you live in with your VoIP service. It also implies that, according on their area code and service, callers may be charged for long distance. Like traditional telephone service, some VoIP companies charge for long distance calls to numbers that are outside of their calling area. You can make calls anywhere for a set amount of minutes at a predetermined charge with other VoIP providers.

Is VoIP Regulated by the FCC?

VoIP service providers who offer interconnected VoIP services, which enable customers to call and receive calls via the normal telephone network were subject to 911 responsibilities by the FCC in June 2005. However, you should be aware that 911 calls made using VoIP are managed differently than ones made through your conventional phone provider. For comprehensive details on the distinctions between VoIP and 911 services, please refer to our consumer fact page.

Furthermore, the FCC mandates that interconnected VoIP providers abide by the Communications Assistance for Law Enforcement Act of 1994 (CALEA) and make contributions to the Universal Service Fund, which provides funding for phone subscribers who meet certain income requirements and for communications services in high-cost areas.

Advantages of VoIP

  • Some VoIP services offer features and services that are not available with a traditional phone, or are available but only for an additional fee. 
  • Paying for both a broadband connection and a traditional telephone line can be avoided. 
  • VoIP technology practically eliminates the expense of phone communication for both business and personal use.
  • VoIP phone service is frequently offered by Internet providers as a free perk for purchasing broadband or higher-speed Internet access as well as Internet cable television channels.
  • Everyone who benefits from the transaction wins because the Internet provider has to pay a little bit more for this service, but the consumer doesn't pay any more for it.

Disadvantages of VoIP 

  • Some VoIP services don't work during power outages and the service provider may not offer backup power. 
  • Not all VoIP services connect directly to emergency services through emergency service numbers. 
  • VoIP providers may or may not offer directory assistance. 
  • VoIP services primary drawback is their propensity to cluster or lag. The sound is a little bit delayed because it is sent in packets. In most cases, inexperienced listeners won't be able to distinguish between VoIP and analogue calls.
  • In the event that neither the user nor the supplier has backup power, several VoIP services cannot function during blackouts.

Difference between VoIP and Traditional Phone Services

FeaturesVoIPTraditional Phone Services
Method of transmissionDigital SignalsAnalog Signals
Internet requirementYes, high-speed broadband No, traditional phone line
CostLower cost for long-distance Higher cost for long-distance
Features and services More features and services Limited features and services
Power outages May not work Usually works
Emergency services access May not connect directly Direct connection
Directory assistance May or may not be available Usually available

Next Article
Voice over Internet Protocol (VoIP)

A

Ayusharma0698
Improve
Article Tags :
  • Computer Networks
  • VoIP

Similar Reads

    What is Internet Protocol (IP)?
    The Internet Protocol (IP) is a set of rules that allows computers and other devices to communicate over the Internet. It ensures that information sent from one device reaches the correct destination by using a unique set of numbers known as IP addresses. Whether you're browsing websites, sending em
    7 min read
    Internet Telephony Protocol | H.323
    Internet Telephony Protocol is also called Voice Over IP . It is a real-time interactive audio/video application. As from the name Internet Telephony, it uses internet as a telephone network with additional features. To communicate between two parties, it uses packet-switched Internet. There are two
    2 min read
    Video Conferencing Protocols
    Internet communication simply means communication between two or many users over the Internet or the WWW (World Wide Web). The communication can be in the form of texting, sharing information, videos, audios, ideas, video chatting, etc. Video conferencing : Videophone/Video chatting/Video conferenci
    3 min read
    Session Initiation Protocol
    Session Initiation Protocol was designed by IETF and is described in RFC 3261. It's the protocol of application layer that describes the way to found out Internet telephone calls, video conferences and other multimedia connections, manage them and terminate them. It's one module. it's ready to estab
    2 min read
    Network Layer Protocols
    Network Layer is responsible for the transmission of data or communication from one host to another host connected in a network. Rather than describing how data is transferred, it implements the technique for efficient transmission. In order to provide efficient communication protocols are used at t
    9 min read
geeksforgeeks-footer-logo
Corporate & Communications Address:
A-143, 7th Floor, Sovereign Corporate Tower, Sector- 136, Noida, Uttar Pradesh (201305)
Registered Address:
K 061, Tower K, Gulshan Vivante Apartment, Sector 137, Noida, Gautam Buddh Nagar, Uttar Pradesh, 201305
GFG App on Play Store GFG App on App Store
Advertise with us
  • Company
  • About Us
  • Legal
  • Privacy Policy
  • In Media
  • Contact Us
  • Advertise with us
  • GFG Corporate Solution
  • Placement Training Program
  • Languages
  • Python
  • Java
  • C++
  • PHP
  • GoLang
  • SQL
  • R Language
  • Android Tutorial
  • Tutorials Archive
  • DSA
  • Data Structures
  • Algorithms
  • DSA for Beginners
  • Basic DSA Problems
  • DSA Roadmap
  • Top 100 DSA Interview Problems
  • DSA Roadmap by Sandeep Jain
  • All Cheat Sheets
  • Data Science & ML
  • Data Science With Python
  • Data Science For Beginner
  • Machine Learning
  • ML Maths
  • Data Visualisation
  • Pandas
  • NumPy
  • NLP
  • Deep Learning
  • Web Technologies
  • HTML
  • CSS
  • JavaScript
  • TypeScript
  • ReactJS
  • NextJS
  • Bootstrap
  • Web Design
  • Python Tutorial
  • Python Programming Examples
  • Python Projects
  • Python Tkinter
  • Python Web Scraping
  • OpenCV Tutorial
  • Python Interview Question
  • Django
  • Computer Science
  • Operating Systems
  • Computer Network
  • Database Management System
  • Software Engineering
  • Digital Logic Design
  • Engineering Maths
  • Software Development
  • Software Testing
  • DevOps
  • Git
  • Linux
  • AWS
  • Docker
  • Kubernetes
  • Azure
  • GCP
  • DevOps Roadmap
  • System Design
  • High Level Design
  • Low Level Design
  • UML Diagrams
  • Interview Guide
  • Design Patterns
  • OOAD
  • System Design Bootcamp
  • Interview Questions
  • Inteview Preparation
  • Competitive Programming
  • Top DS or Algo for CP
  • Company-Wise Recruitment Process
  • Company-Wise Preparation
  • Aptitude Preparation
  • Puzzles
  • School Subjects
  • Mathematics
  • Physics
  • Chemistry
  • Biology
  • Social Science
  • English Grammar
  • Commerce
  • World GK
  • GeeksforGeeks Videos
  • DSA
  • Python
  • Java
  • C++
  • Web Development
  • Data Science
  • CS Subjects
@GeeksforGeeks, Sanchhaya Education Private Limited, All rights reserved
We use cookies to ensure you have the best browsing experience on our website. By using our site, you acknowledge that you have read and understood our Cookie Policy & Privacy Policy
Lightbox
Improvement
Suggest Changes
Help us improve. Share your suggestions to enhance the article. Contribute your expertise and make a difference in the GeeksforGeeks portal.
geeksforgeeks-suggest-icon
Create Improvement
Enhance the article with your expertise. Contribute to the GeeksforGeeks community and help create better learning resources for all.
geeksforgeeks-improvement-icon
Suggest Changes
min 4 words, max Words Limit:1000

Thank You!

Your suggestions are valuable to us.

What kind of Experience do you want to share?

Interview Experiences
Admission Experiences
Career Journeys
Work Experiences
Campus Experiences
Competitive Exam Experiences