What to look for in a VoIP phone system for small business

A good VoIP phone system for small business has a fair contract and lets you keep your numbers. It also survives outages, sounds clear and comes with help you can reach. Get these wrong and you get dropped calls, missed customers or a contract you can't leave.

How a small business VoIP system works

VoIP stands for Voice over Internet Protocol. Your calls travel over your internet line to the provider's system in the cloud. From there, they reach any phone number, just like a normal call. Your team can talk on desk phones, a computer app or a cell phone app. There's no phone box in your back room, so your internet line matters a lot.

1. Read the contract before you sign

Start with the contract you have now. The FCC's guide to keeping your phone number (archived copy, 2018) says to review your current contract first. It warns that your contract may have early termination fees. Find your end date before you shop.

Then read the new contract just as closely:

• How long is the term?
• Does it renew on its own? How do you cancel?
• What does it cost to leave early?
• What is the full monthly price, with taxes and fees?

Get the answers in writing. A price per user is only part of the bill.

2. Keep your phone numbers

You can usually keep your phone number when you switch, if you stay in the same area. This is called porting. Once you ask a new company for service, your old company can't refuse to port your number, the FCC guide says. That holds even if you owe money.

Under 47 CFR 52.34, VoIP providers must allow a port in or out "without unreasonable delay." Under 47 CFR 52.35, a simple port must be done within one business day. Bigger ports can take longer, so leave room in your plan. Some rural phone companies can get waivers from state regulators, the FCC guide notes. If your carrier is a small local one, ask early.

Follow these steps:

1. Don't cancel your old service first. The FCC says to start the new service before you end the old one.
2. Ask the new provider to start the port for you.
3. Ask if there's a fee. The FCC guide says companies may charge you to port.

3. Plan for internet and power outages

VoIP phones need both internet and power, and 911 calls from them do too. Under 47 CFR 9.11, your provider must tell you when 911 may not work and let you update the address it sends. So make a plan before an outage happens.

• Forward calls to cell phones. Set up forwarding, or have staff use the mobile app, so customers still reach you.
• Add battery backup. Put a battery backup, called a UPS, on your modem, router and network switch.
• Consider a second internet line. This is optional. It helps if phones are the heart of your business.

Ask how calls get forwarded when your office is offline, and test it once.

4. Check your internet and network

A single call uses very little bandwidth. Microsoft's guide to preparing a network for Teams gives a useful yardstick. A one-to-one audio call needs at least 10 kbps each way. Microsoft recommends 58 kbps, and 76 kbps for the best sound. Those numbers add up when many people are on calls at once.

Microsoft's network training unit sets these targets:

• Latency (delay) under 100 ms round trip
• Jitter (uneven timing) under 30 ms in any 15 seconds
• Packet loss under 1% in any 15 seconds

Do voices sound choppy or robotic? Microsoft says that could be jitter or packet loss. Quality of Service, or QoS, settings on your router can help. QoS tells the router to send voice traffic first. Wired desk phones also tend to be steadier than phones on Wi-Fi.

A network built for voice makes these targets easier to hit. Our IT services team designs, installs and manages business networks.

5. Choose features your callers will notice

Ask about these features:

• Auto attendant. A menu like "Press 1 for sales" sends callers to the right place.
• Ring groups and call queues. Several phones ring at once, or callers wait in line for the next person.
• Voicemail to email. Messages land in your inbox.
• Mobile app. Staff can take office calls on their cell phones.
• Texting. Ask whether the provider registers your business for texting. The Campaign Registry says brands are verified before they can send messages. It also says businesses can't register with it directly, so your provider handles it.
• Call recording. Pennsylvania law, 18 Pa.C.S. 5704, allows recording when all parties have given prior consent. Plan how you'll get consent before you turn it on. Ask a lawyer if you're unsure.
• Outbound caller ID. Under 47 CFR 64.6301, most voice providers had to use STIR/SHAKEN by June 30, 2021. It helps other carriers check that your caller ID is real. Ask how your provider handles it.

Features often change by plan tier. On Google Voice, for example, the Standard tier adds an auto attendant and ring groups. The Starter tier doesn't have them (Google's page, read Oct 26, 2026). Check which tier includes the features you need.

6. Know who answers when something breaks

Before you sign, ask who you call when a phone stops working. Is support nearby, and can you reach a person? Ask whether you get an admin portal to change greetings and users yourself. Ask for a setup timeline in writing, with the date your numbers will move.

At Xtego, our business phone systems service is cloud-based VoIP with per-user, per-month pricing. Staff take office calls on mobile and desktop apps, and customers see your business number. Calling in the US and Canada is unlimited. You can text customers from your business number and send faxes without a fax machine. Voicemail goes to email with the recording attached. An auto attendant routes each call, and call queues hold callers for the next person. Call recording, hold music and extensions are available too. We handle number porting, offer optional desk phones and provide local support. Most deployments are live within 14 business days.

Is your phone contract ending, or is your old system failing? Talk with our team about your setup. Tell us when your contract ends, which numbers you need to keep and what your office needs from its phones.