Resources · Business phones

How to choose a business phone system: seven questions to ask before you switch to VoIP

Choosing a business phone system used to mean buying hardware for a closet. Today most options are cloud services billed per user, and the decision is less about equipment and more about how your team works, what your network can handle, and which rules you need to meet. This guide walks through the choice as a series of questions, so you can narrow the field before you talk to any provider.

Question 1: How do your people actually use the phone?

Sort your team into rough groups:

  • Desk-based staff who mainly take and transfer calls
  • Mobile or remote staff who need the business number on a cell phone or laptop
  • Queue-based teams, such as support or scheduling, who answer many calls in a row
  • Shared spaces, such as lobbies, break rooms, or warehouse floors

The mix points you toward the right category. A team that's mostly mobile may care most about the app. A team with busy queues may need contact center features.

Question 2: Which category fits?

Cloud phone system (UCaaS). The provider runs the system; you pay per user. Calling, voicemail, auto-attendants, video meetings, and team chat often come together. This is the most common choice for new systems.

Calling inside your collaboration app. Some businesses add phone numbers to a platform they already use, such as Microsoft Teams, through the platform's own calling plan or a provider that connects to it. This fits teams that already live in that app.

Contact center (CCaaS). Built for queues: call routing, wait-time messages, call recording, reporting, and often chat and email in one place. It can sit alongside a cloud phone system.

On-site system (PBX). Equipment you own or lease, kept on site. It can make sense where you've recently invested in one, or where specific integrations require it. Ask how long it will be supported.

Question 3: Is the network ready for voice?

VoIP quality depends mostly on your internet connection and your office network. Voice uses upload as well as download, so check both. Ask your IT team to configure quality of service (QoS), which tells the network to put voice traffic first. Then decide what happens during an outage: most cloud systems can send calls to mobile phones automatically, and a backup internet line adds another layer.

Question 4: How will 911 work for every user?

Two federal laws apply to multi-line business phone systems. Kari's Law requires that anyone can dial 911 directly, without a prefix, and that the system alerts a central spot such as a front desk. RAY BAUM'S Act requires 911 calls to carry a dispatchable location, meaning a validated street address plus details such as floor or suite. Remote and mobile users are harder, and the rules allow other methods when automatic location isn't technically feasible. Ask each provider how it handles office, home, and mobile users, test with its approved method, and confirm compliance with counsel.

Question 5: What else depends on your current lines?

Before you switch, inventory every line on your current bill. Many carriers are retiring traditional copper lines (POTS), and alarm panels, fire panels, elevator phones, fax machines, and some card readers may still rely on them. Each may need its own replacement, and fire and elevator lines can have code requirements. Check with those vendors and the local fire authority before changing anything.

Question 6: What will you need to record or text?

Call recording. Consent rules differ by state. Some states require only one party's consent; others require everyone on the call to agree. If you record calls across state lines, have counsel review your announcements.

Business texting. US carriers generally require businesses texting from regular 10-digit numbers to register (known as 10DLC registration), and customers need to opt in. Build registration time into your launch plan.

Question 7: How will you move your numbers?

In most cases you can keep your numbers by porting them to the new provider. Ports stall when the name, address, or account number on the request doesn't match the current bill. Request a recent bill and a customer service record early, and keep your old service active until every number has moved.

A short comparison checklist

  • What's included per user, and what's an add-on (recording, texting, contact center, toll-free minutes)?
  • Term length, auto-renewal, and early-termination terms
  • 911 handling for office, remote, and mobile users
  • Who manages the port, and what the cutover plan looks like
  • What happens to calls if your internet goes down
  • Supported phones and headsets, and whether you can reuse what you own
  • Integrations with your CRM, help desk, or collaboration app
  • Support hours and how escalation works

Frequently asked questions

What's the difference between VoIP, UCaaS, and a PBX? VoIP is the technology of carrying calls over the internet. UCaaS is a cloud service that uses VoIP and usually bundles calling, voicemail, meetings, and chat, billed per user. A PBX is a phone system you own or lease and keep on site.

Do we need a contact center platform or just a phone system? If calls arrive in queues and you need routing, wait messages, and reporting, look at contact center (CCaaS) features. If most calls go to individuals, a cloud phone system usually covers it.

Can remote employees use the business phone number? Yes, on most cloud systems, through a mobile or desktop app. Make sure each remote user's 911 location is handled correctly.

How long does it take to switch business phone providers? It depends on the number of users and numbers, porting, and any copper lines that need replacing. Plan for porting and 911 setup in the project timeline rather than treating the switch as a single day.

Is it legal to record business phone calls? It depends on the states involved. Some require one party's consent and others require everyone's. Use a clear recorded announcement and have counsel review it.

Want a second opinion?

If you'd like help, Telpeak can map your current contracts and renewal dates, ask several providers what they can deliver, and lay the options out side by side. You make the call.

Book your free audit or call (360) 483-1315.

Telpeak is paid by the providers you choose, never by you. Telpeak is vendor-neutral. We work for you, not for the providers we compare.

This guide is general information, not legal or compliance advice. Provider names belong to their owners.