Internet Telephony

Internet Telephony Software for Business 

Welcome the future of communication with Internet Telephony Software. Say goodbye to traditional phone lines and embrace a cost-effective solution that enables crystal-clear voice and video calls over the internet with unparalleled convenience, flexibility, and scalability.

Easily customizable as per your business needs
Wide reach with services in 100+ countries
Unified callbox for streamlined communication
Easy integrations with popular business tools
Internet Telephony Software for Business 

Get an Internet Phone Number for Your Business Instantly 

Select numbers :
  • Call
  • SMS
  • MMS
Trusted and loved by 2000+ companies worldwide

How to set up an Internet Telephony? 

To set up an Internet Telephony, create a KrispCall Account, and select the country and phone number type. Make the payment, configure the settings and features, and you are set to use the internet telephony to make calls.

Create a KrispCall Account.
Select the country and choose your phone number type.
Select the phone number you need
Make payment and Submit your documents for verification (if necessary).
Start making and receiving calls through Krispcall.
How to set up an Internet Telephony 

Buy 100+ Country’s International VoIP Phone Number Online

Get connected globally with Krispcall’s International VoIP Phone Numbers! Buy 100+ country numbers online and stay connected effortlessly. Expand your reach, enhance business communications, and enjoy seamless international connectivity. Join Krispcall today and experience the power of global communication at your fingertips.

KrispCall Internet Telephony Features

Unlock awesome features in your custom local phone number to upgrade your business communication.

Internet Telephony with Your Favorite Tools Integration

Easily integrate internet telephony with your favorite tools with Krispcall. Streamline your communication process with internet phone numbers integrated with popular applications.

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A Quick Guide About Internet Telephony

What is Internet Telephony 

What is Internet Telephony? 

Voice over Internet Protocol (VoIP), usually called Internet telephony, is a technology that facilitates voice communication through the Internet. This communication system transforms analog audio streams into digital data packets sent across IP networks.
Internet telephony service providers, like Krispcall, eliminate the need for conventional phone lines or traditional phone systems by enabling users to make voice conversations, have video conferences, and send multimedia messages.

What are the advantages and disadvantages
of Internet Telephony?


Flexibility and Mobility: Users of Internet Telephony can place calls with an Internet connection from any location with any internet-connected devices. Employees may stay connected and productive when working remotely thanks to this flexibility.
Scalability: Internet Telephony systems are highly scalable and easily adapt to changing business needs. There is no need to make costly infrastructure adjustments to add or remove phone lines or extensions.
Cost Saving: They have cheaper tariffs and communication fees, particularly for long-distance and international calls. By utilizing the Internet, businesses can benefit from low-cost calling rates and avoid the hefty costs associated with traditional phone lines.
Advanced Features: They regularly add advanced features that improve collaboration and communication. These features include call forwarding, voicemail, call recording, video conferencing, and virtual phone lines.
Integration: They can be integrated with other programs and equipment frequently used in corporate settings. Workflows are streamlined, and efficiency is increased through integration with other business tools and CRM apps.


Dependency on Internet: High-speed internet connectivity is necessary for internet telephony. Voice communication may be completely lost if the internet service is interrupted or has outages.
Power Dependency: Traditional landlines can continue operating even during electric power failure. However, IP phones and routers used in Internet Telephony systems typically need power so they will be dysfunctional when there is no electricity.
Call Quality and Reliability: Network congestion, bandwidth restrictions, and Internet connectivity issues, can all impact the quality of Internet telephony calls. So they are less reliable in terms of call quality compared to traditional phones.
Security and Privacy: Security issues like hacking, spying, and unauthorized access are possible with Internet telephony calls. So these systems are quite vulnerable as compared to POTS.
Emergency Calls:Most of the internet telephony services does not support emergency calling (911 or other emergency numbers). So in case of emergency, you would have to rely on traditional phones.

How does Internet Telephony Work?

Here is a step-by-step process on how Internet Telephony works.

1. Voice Conversion: First, the voice is recorded by an audio recorder and converted from analog to digital format when placing an Internet telephony call.
2. Packetization: Secondly, the destination address, speech data, and other relevant information are packed into compact packets from the digital voice data.
3. IP Network Transmission: After that, the IP network, a LAN within an organization or the general internet, transmits the data packets.
4. Routing: Next, the data packets transit the network, frequently using switches and routers to reach their destination. The routers decide the best way for the packets to travel to their destination.
5. Reassembly: Based on the packet headers data, the packets are reassembled correctly once they reach their destination.
6. Voice Conversion: Finally, the recipient can hear the voice because the received digital packets are transformed into analog audio signals at the receiving end.
How does Internet Telephony Work
How To Choose The Best Internet Telephony Software

How To Choose The Best Internet Telephony Software?

1. Features:Examine the features that various Internet telephony programs offer. Shortlist only the ones that have all the features you need and might need in the future.
2. Scalability:Examine the software's capacity for expansion. Check if it allows seamless upscaling and downscaling whenever you have to expand or contract your business.
3. Integration Capabilities: Make sure the platform supports integration with CRM apps and other business tools. Integration streamlines processes, increases productivity, and improves overall user experience.
4. Call Quality and Reliability: Verify the software's reputation for dependability and call quality. Always look for suppliers with a solid network and infrastructure to guarantee clear connections. Read evaluations and look for advice from reliable sources.
5. Cost: Examine the various software suppliers' price structures. Check about factors like recurring monthly fees, user-based fees, and extra prices for extra features like international calls. Check to see if the program offers a suitable price/value ratio for the company.

Top 10 Internet Telephony Service Providers in 2023

1. KrispCall

KrispCall is a leading Internet Telephony with advanced features like a unified callbox, Interactive voice response, and call monitoring. Over 2000 companies trust Krispcall in over 100 countries. Krispcall offers many features, making it ideal for personal and business use.

krispcall virtual call center software

Krispcall offers flexibility, scalability, and great user experience at a competitive price. Moreover, this internet telephony offers the best contact center software for managing customer relationships and providing personalized support.

KrispCall offers local virtual, international, vanity phone, and toll-free numbers. Here are some prominent features that make Krispcall the best option for cloud telephony.

Unified Callbox
Intelligent call routing
Interactive Voice Response
Automatic Call Distribution
Omnichannel Support
CRM Integration
Call Monitoring and Recording
Real-Time Analytics and Reporting
Outbound Dialing
In-app call analytics
Call recordings
Integrated chat
Call Center Analytics
Customer insights
Call Queuing and Callback
Workforce Management
Essential: $15/user/month
Standard: $40/user/month
Enterprise: Custom
Seamless integration with CRMs and other workspaces
High-Quality audio with noise cancellation
Well-designed UI and navigable site/App
Cost-effective with corporate-level features
Some features, like call barging, are still in progress.
Krispcall is not compatible with Windows and Linux.

2. RingCentral

RingCentral is a prominent Internet telephony service provider offering many advanced features, including Interactive Voice Response and Automatic Call Distribution. RingCentral is known for its simple setup and use.


RingCentral has been one of the most popular providers for businesses that need flexibility, as it offers compatibility for on-premises, remote, and hybrid communication, and interaction. It offers service at a reasonable price for various phone numbers, including local, international, and vanity phone numbers.

Here are some of the major features of RingCentral

Interactive voice response (IVR)
Automatic call distribution (ACD)
Auto dialer
Preview dialer
Computer telephony integration (CTI)
Predictive dialer
Call Routing
Call Monitoring
Core: $20/user/month
Advanced: $25/user/month
Ultra: $35/user/month
Easy to set up and use.
Compatible with on-premises, remote, and hybrid communication and interaction.
Does not provide the best scalability options.
It does not offer customized conference call greeting messages
Incompatible with Linux.
Does not have the widest network coverage

3. Nextiva

Nextiva is a prominent provider of cloud-based communication solutions designed to empower businesses. Nextiva enables businesses to streamline communication processes, improve productivity, and enhance customer interactions.


With advanced features such as auto-attendant, call recording, voicemail-to-email, and mobile integration, Nextiva provides a user-friendly solution for businesses of all sizes. Nextiva’s commitment to exceptional customer support and innovative technology has made it a trusted choice for businesses seeking reliable and scalable communication solutions.

Call Screening
Call Recording & Rating
Call Park
Call Forwarding
Three-Way Calling
Conference Bridge
Call Queuing
Free Local Phone Number
Free Toll-Free Number
Call Analytics
Essential: $18.95/user/month
Professional: $22.95/user/month
Enterprise: $32.95/user/month
Includes live chat, gamified analytics, CRM, and team collaboration.
Offers a CRM and VoIP phone system package called the Communication Suite.
It can be expensive when integrated with many tools and features.
Limited international calls.

4. Vonage

Vonage has become a popular provider of internet telephony and cloud communications services for businesses of all kinds and sizes. Their platform has several communication options, including voice calling, video conferencing, texting, and contact center services.


Businesses may improve their communication skills with Vonage by leveraging innovative technologies like call routing, virtual numbers, voicemail transcription, and CRM connections.

Vonage is renowned for its dependable network, international reach, and adaptable plans, making it a reliable option for companies trying to optimize their communication systems and raise customer satisfaction.

Call forwarding
Call screening
Virtual Assistant
Call monitoring
CRM integration
Domestic Plan: $9.99/user/month
International Plan: $14.99/user/month
Offers a mobile and desktop app.
Offers basic tools integration.
Vonage provides good call quality.
The online support and technical support are poor.
Vonage does not have the most competitive price for the available features.

5. Ooma

Ooma is one of the most reputable providers of internet telephony services for companies. Their platform provides various communication options, such as voicemail transcription, virtual phone numbers, and sophisticated call management tools.


Businesses can use Ooma’s internet-based calling services at a low cost to ensure high-quality voice communication without using traditional phone lines. Ooma is a well-liked option for small and medium-sized organizations seeking a reliable phone solution that provides flexibility and scalability because of its user-friendly interface, dependable service, and reasonable pricing.

Call management
Virtual call center
Employee directory
Call logging and call routing
Virtual extensions
Employee directory
Secure Plan $4.99 per month
Pro Secure Plan $14.99 per month
Competitive monthly pricing
Easy to use
No contract required
24/7 customer support
Limited integrations
Limited communication options
$29.95 activation fee

6. 8×8

8×8 is another prominent virtual phone number provider. Their platform provides various services, including team messaging, video conferencing, internet telephony, and contact center solutions. 8×8 allows seamless communication and collaboration across teams with features including virtual numbers, call routing, voicemail transcription, and interfaces.


8×8 is a reputable option for businesses wishing to optimize their communication infrastructure and boost productivity because of its dependable network, strong security measures, and scalable solutions.

Team Messaging
Single Sign-on
Skills Based Routing
Hot Desking
Multi-level Auto Attendant
X2 Plan: US$288 /user/year (billed annually)
X4 Plan: US$528 /user/year (billed annually)
Simple to navigate and use the software
Best software for broadcasting the messages
Provides great analytics to track employee performance
Provides low-level customer services to the users
Still switching components to web-based applications

7. Grasshopper

Grasshopper is a prominent provider of virtual phone number services focused on small and medium-sized businesses. They provide various tools and capabilities on their platform, such as call forwarding, voicemail transcription, and a mobile app for handling calls to simplify communication.


Grasshopper offers virtual phone numbers that can be used with existing devices, enabling businesses to build a professional presence. Moreover, Grasshopper is a well-liked option for small firms looking for a reliable and adaptable virtual number solution to improve their communication capabilities because of its user-friendly interface and useful features.

Call Forwarding
VoIP + WiFi Calling
Voicemail Transcription
Virtual Receptionist
Desktop + Mobile Apps
Business Texting
Solo: $28/user/month (billed annually)
Partner: $46/user/month (billed annually)
Small Business: $80/user/month (billed annually)
Compatible with both mobile phones and desktops.
Offers VoIP service at one of the most affordable prices.
Does not offer the best customer service.
Lacks various tools and integrations like CRM.
The number porting process takes a long time, usually up to 10 days.

8. Dialpad

Dialpad is emerging as one of the best virtual phone number providers. With features including voice calling, video conferencing, texting, and contact center capabilities, the Dialpad platform provides a contemporary approach to internet telephony.


Dialpad’s user-friendly interface and easy connections with well-known business applications enable productive communication and teamwork. Dialpad lets organizations increase efficiency and improve customer interactions with the help of cutting-edge capabilities like real-time transcription and speech intelligence driven by AI.

IVR/ Voice Recognition
Goal Setting/Tracking
Automatic Outbound Dialer
Automated Routing
Unified Communications
Standard: $180 user/year ( billed annually)
Pro: $300 user/year ( billed annually)
Enterprise: Custom Quote
Enables easy communication with our consumers
Salesforce integration enables quick data and contact interactions.
Better reporting capabilities and call usage data are provided to managers.
The dashboard can be better
Loading Analytics Data takes time

9. MightyCall

MightyCall is another well-known provider of virtual phone numbers. Their platform offers various services, including custom greeting, auto attendant, call waiting, call screening, contact center solutions, team messaging, video conferencing, 24/7 auto-attendant and powerful integration.

MightyCall Internet Telephony Service Provider

The capabilities like virtual numbers, call routing, voicemail transcription, and interfaces,makes it a better option for entrepreneurs and small enterprises looking for a reliable communication platform. Due to its trustworthy network, and robust security measures business can use internet-based calling services at a low cost communication without using traditional phone lines.

Custom Greeting
Music On Hold
Business Hours Call Routing
Call Waiting
Call Screening
Core: US$15 /user/month (billed annually)
Pro: US$20 /user/month (billed annually)
Enterprise: Contact the sales team
Compatible applications for iOS and Android
Action-to-task conversion
24/7 auto-attendant
Powerful integration
Customer service is not the best
Call quality can be made better
Difficult for beginners to navigate

10. Google Voice

Google Voice has a variety of features available to improve communication for both personal and professional use. Users of Google Voice can get a virtual number through the service to connect to their current mobile or landline phone.


Additionally, Google Voice connects with other Google services, making it possible to synchronize contacts and call history without any hassle. Google Voice is a popular option for people and small organizations looking for a virtual phone number solution due to its user-friendly interface, affordability, and integration features.

Call Blocking
Personal greetings
Message forwarding
Unlimited calling (within the USA)