IP Telephony:
What It Is and How It Works

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A modern solution that allows your business to save up to 80% on communication costs and connect with clients and employees without geographical limits. And that’s just part of what it can do.
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What is IP telephony?

It is a telephone system that transmits voice over the Internet Protocol. There is no need to purchase expensive equipment or lay cables — an internet connection is all you need.  

Unlike traditional landline systems with limited functionality, IP telephony opens up fundamentally new opportunities for corporate communication.  

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IP telephony allows users to

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Make and receive phone calls over the internet
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Get a fully configured system in just one business day
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Save up to 80% on corporate communications
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Enjoy consistently high call quality
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Integrate calls with CRM, websites, databases, ERP, and custom software
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Implement custom integrations tailored to specific business needs
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Get statistics and personalized analytics

How does IP telephony work?

It uses the Internet Protocol for voice transmission: devices recognize each other and exchange voice data over the network.

The main requirement for high-quality calls is a stable internet connection. The recommended speed is at least 100 kbps for voice traffic.

What happens during an IP call? 

  • 1 Voice is converted into a digital signal
  • 4 The device receives and recognizes the signal 
  • 2 The gateway compresses and encrypts it, forming an IP packet
  • 5 The software decodes it back into a regular voice
  • 3 The packet is transmitted over the network to the receiving party's device 
  • As a result, the caller hears the other person just like during a standard phone call.

Benefits of IP telephony for business

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Easy system deployment and configuration
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Cost-effective rates with consistently high call quality
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Whisper, conference, and silent monitoring modes
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Flexible scenarios for incoming calls and queues 
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Callback, IVR menu, and voicemail
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Call transfer and call pickup
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Multiple simultaneous calls on every number
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Internal company calls without an external PBX

How to connect IP telephony

There are three ways to do this:
1 — Via a VoIP gateway Connecting to a standard landline phone — suitable for offices that want a cost-effective transition and don’t require advanced features.
2 — Via a device app Installing dedicated software on a smartphone, tablet, or computer — allowing you to make calls directly from the chosen device.
3 — Via IP phones Connecting IP phones to a corporate or virtual PBX — a comprehensive business solution.

Ready to set up IP telephony for your business? Leave the Asterisk server setup to the professionals.

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How high call quality is achieved

Telephony server algorithms are resilient to IP network latency and interference. You can configure bandwidth limits and the number of users per line, which minimizes audio delays. The industry keeps evolving: new protocols, such as RSVP, further improve call quality.
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So why do you need IP telephony?

  • Cost savings IP telephony helps reduce communication expenses: make cheap long-distance and international calls, and call internally for free.
  • Flexible management Assign short internal extensions to employees and set call reception hours based on time zones and work schedules. Multi-channel capabilities are available — perfect for online stores and companies with high call volumes. 
  • Integration
    and analytics     Integrate your CRM, track call statistics, record conversations, set up call forwarding, blacklist numbers, use an auto-attendant, and distribute calls among managers.
  • Quick start and a unified number system A cloud PBX allows you to build a corporate network in the shortest possible time. Connect toll-free (0800) numbers, local, and mobile numbers from any country, and configure an Interactive Voice Response (IVR) menu for professional client greetings.
Beyond the technical advantages, IP telephony provides your team with the flexibility to work from anywhere, and your clients with uninterrupted communication. Additionally: connect city and mobile numbers with codes from any city or country; connect an 0800 number and add a wealth of features (voice greeting, IVR, call queues, click-to-call, statistics, call recording, etc.).

Forget about lost leads, busy lines, and
missed calls — a properly configured Asterisk system solves these problems.

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Asterisk-based IP telephony setup and support from NETFORCE Ukraine

  • 1 Assessing your needs and selecting the optimal solution.
  • 2 Configuring the IP telephony server for your specific tasks. 
  • 3 Training your team and handing over the system.

How the setup works

Installing and configuring the server. Setting up the software: the server side and databases. Connecting SIP numbers (external phone lines). Configuring the hardware: VoIP phones and headsets.
Our services

Turnkey virtual PBX

We fully configure an Asterisk-based IP telephony server. We build a system with the required functionality and offer personalized solutions.  

Asterisk audit

We review the security and efficiency of your Asterisk system and provide recommendations for its improvement.

Technical support

We provide 24/7 support for your system, responding promptly to any questions or incidents.