DOCUmation Blog

Best VoIP Solutions for Business: Answers to the Most Common Questions

Written by Liz Morris | 2025

Understanding the Basics of VoIP Phone Systems

Selecting the right phone system is an important decision for any organization looking to streamline communication. For many, IP phone systems have become the go-to when seeking reliability, flexibility, and deeper control over how calls are managed.

But choosing a platform is only the starting point. Leaders also want to understand how VoIP operates within a broader UCaaS set up—where voice, video, messaging, and collaboration tools converge into a single, integrated communications environment.

The FAQ below addresses key questions that arise when considering or implementing VoIP, offering a look at its role in a unified communications environment.

A Yealink VoIP phone configured for unified communications environment, supporting streamlined, reliable business calling.


What is VoIP?

VoIP—Voice over Internet Protocol—delivers phone service over an internet connection instead of traditional phone lines. It consolidates voice, video, and messaging into a flexible platform that scales with the business.

How does VoIP work?

VoIP works by breaking your voice into small digital data packets and sending them via your internet connection. These packets are reassembled on the receiving end in real time to create a clear, continuous conversation.

Your VoIP provider manages the routing, monitors call quality, and maintains secure, uninterrupted connectivity across devices. Because everything runs over the network instead of traditional phone lines, organizations can eliminate legacy PBX hardware and consolidate calling, voicemail, messaging, and video into a single unified platform.

What do businesses use VoIP phone systems?

Businesses choose VoIP because it delivers a more efficient, scalable, and cost-effective communication platform than traditional phone systems. By running voice over the network instead of physical phone lines, organizations gain flexibility, reliability, and access to advanced features that support a modern workforce. The most common benefits include:

  • Lower operating costs through reduced hardware and lines.
  • Easy scalability across users, teams, and locations.
  • Advanced features like analytics, routing, and integrations.
  • Better customer experience through smarter call handling.
  • Supports remote teams on any device.
  • Offers employee privacy by keeping personal cell numbers hidden.
  • Centralized administration from one management dashboard.

What happens to VoIP when the internet is down?

VoIP relies on your internet connection to place and receive calls, so if the connection goes down, standard desk-phone service is interrupted. Unlike traditional phone lines, VoIP traffic is fully IP-based—meaning no internet, no call path.

However, because VoIP platforms are cloud-hosted, the system itself stays online even if your local network goes down. That cloud architecture, combined with built-in safeguards, helps organizations avoid downtime through several proven approaches:

  • Failover Call Routing: Calls auto-forward to mobile devices, softphones, or other locations if your main connection is lost.
  • Backup Internet Connections: A secondary circuit (fiber/cable, 5G, or wireless) keeps VoIP running if the main internet fails.
  • Mobile and Desktop Apps: Teams can continue calling through VoIP apps using cellular data or an alternative network.

Can you text from a VoIP phone number?

Yes—many VoIP providers support SMS and MMS from the same number used for calls. This allows teams to centralize voice and text interactions in one platform for streamlined communication.

Why use VoIP instead of a cell phone?

VoIP delivers centralized management and advanced tools that standard cell phones can’t match. IT teams control users and policies from one dashboard, while features like routing, auto-attendant, analytics, and CRM integration give businesses clear oversight of performance and customer interactions.

Can I plug a VoIP phone into my internet router?

Yes. Most VoIP desk phones connect directly to a router or switch via Ethernet. As long as the network meets bandwidth and QoS requirements, the phone will function normally.

Can VoIP calls be traced?

Yes. VoIP calls can be traced and logged much like traditional calls. Providers maintain call records, and businesses can use reporting tools for compliance, analytics, and security oversight.