What are VoIP Phones?

What are VoIP Phones?

VoIP phones are phones connected to an IP phone system using LAN (Local Area Network) or the Internet instead of traditional phone lines. They connect to a PBX or VoIP phone service using IP networks—LAN or the internet. They convert voice into digital packets and send them over the network. On the receiving end, the signal is rebuilt into standard audio. This allows businesses to make calls globally without relying on copper phone lines.

IP Phones for Business Industry Use

IP phones are the backbone of any modern phone system. There are two main types:

Hardware IP Phones

These are desk phones that look like landline phones but connect over IP. They use SIP to communicate with the VoIP phone system. Common features: HD audio, BLF keys, USB/Bluetooth headset support, multi-line handling, and video on high-end models. Top brands based on customer reviews are Yealink, Snom, Fanvil, Cisco.

Softphones

Softphones are apps that run on desktops or mobile devices. They act like regular desk phones but need no hardware. They’re ideal for remote staff and small business teams.

How Does a VoIP Phone System Work?

A VoIP phone service connects IP phones to the outside world using internet-based routing instead of analog lines. SIP handles signaling, RTP transmits voice. The system converts and delivers calls in real time. This reduces costs, simplifies scaling, and enables remote setups across offices.

Features of Business VoIP Phones

Modern VoIP phones include: call hold/transfer/mute, voicemail, HD speaker/mic, headset support, presence display, menu navigation, USB ports, Wi-Fi, Bluetooth, and video (on premium models). Some models also support video conferencing and file sharing.

Choosing the Right VoIP Headset Compatible Phone

Softphone or Desk Phone?

Use softphones for remote staff. Use desk phones where hardware is preferred. Most businesses combine both.

Compatibility

Check that the phone is SIP-compatible.

Role-Specific Features

Agents need headsets. Managers may want touchscreens. Conference rooms need dedicated hardware.

Future-Ready Devices

Pick models that get regular updates and offer long-term support.

VoIP Phone Service and Setup

A working VoIP phone system includes: IP PBX software, a SIP trunk or phone service provider, and compatible VoIP devices. 3CX supports major brands and includes automatic provisioning.

how does voip work

VoIP Phones for Business Collaboration

VoIP systems support real-time collaboration. Users can call, chat, join video meetings, and access contacts from any device or location. This allows for seamless teamwork across remote and office setups.

  • Standard keypad dial keys
  • Volume adjustment
  • Loudspeaker
  • Redial, Transfer, Hold, Mute and Voicemail keys
  • Headset key for automatic switching between devices
  • Menu/navigation keys for configuration of settings (Sound, Call forwarding, Time & Date, Display etc.)
  • Access to company phone book
  • BLF Keys
  • Built-in WiFi and Bluetooth
  • USB port

    More advanced SIP desk phones also offer integrated video conferencing and content sharing in the device.

    Top VoIP Phone and Conference Products

    Fanvil

    • X4 – Ideal for call centers
    • V64 – Video-enabled for managers

    Snom

    • D785 – High-end with color display
    • M900 – DECT base for wireless installs

    Yealink

    • T46U – Popular office phone
    • T54W – Executive model with Wi-Fi

    Cisco

    • CP-8841 – High-end desk phone
    • CP-7821 – Simple and reliable for teams

    VoIP phone questions to ask prior to purchase:

    • Is the manufacturer/model compatible with my communications system? Although most IP phones can be manually configured, modern software solutions like 3CX offer plug & play configuration that eliminates all the hard work. View 3CX compatible devices here.
    • What features do I need? Most employees will work fine with a standard, reasonably priced IP phone. Top executives and directors might benefit from a more advanced VoIP telephone, which will allow them to save time and communicate more efficiently from the one device.
    • Is the VoIP phone future-proof? You might be tempted to opt for used devices, but make sure they are newer generation and likely to last with software updates for an extended period of time.
    • Do I need a conference room solution? There are also various models which are built specifically for this. It’s a good idea to purchase at least one for each space you expect to hold conference calls.