Buyer guide, Business phone · 6 min read
How to choose a business phone system: a practical buyer guide
By the CallRoute team ·
Almost every business phone system promises calling, texting, voicemail and an app. On a features page they look nearly identical. The differences show up later: when a text fails to deliver, when a customer calls after hours, or when you try to see what your team actually said to a client last week. This guide covers what to check before you choose, so those surprises happen during the trial and not after you have moved your numbers.
Start with how your team actually works
Before you compare vendors, write down a few plain facts about your own team. They decide which features matter and which ones are noise.
- Who answers the phone today, and what happens when nobody picks up?
- Do customers text you, or expect you to text them reminders and updates?
- Does each person need their own number, or does one main number route to the right person?
- Do you need a record of calls for training, disputes or compliance?
- Who needs to see everything: an owner, a manager, or each teammate only their own conversations?
Keep this list next to you during demos. It is easy to be impressed by a feature you will never use and miss the one you needed every day.
1. Numbers: local, toll-free and one per person
Check what kinds of numbers the system offers and how many come with each user. Local numbers feel familiar to customers in your area. Toll-free numbers suit businesses that serve a wide region and want one national number. If you are unsure which fits, read our guide to local vs toll-free numbers.
Also ask what an extra number costs per month, and whether every teammate can have a direct number in addition to a main line. Direct numbers let customers reach the person they already know without going through a menu.
2. One inbox for calls, texts and voicemail
The biggest day to day difference between systems is where conversations live. A good system puts calls, texts and voicemail with the same contact in one thread, so anyone looking at it sees the full history in order. A weaker one splits them across tabs or apps, and context gets lost.
Ask how the inbox handles visibility. Can an owner or admin see the whole team's conversations? Can teammates leave internal notes, mention each other, and assign a conversation to someone? These are what make a phone system work for a team rather than a group of individuals with separate phones.
3. Business texting and compliance
In the US, business texts from software must be registered with the carriers. Local numbers go through A2P 10DLC registration and toll-free numbers go through toll-free verification. Unregistered texts are filtered or blocked, often with no clear error.
Beyond compliance, look at the texting tools themselves: saved templates that fill in a customer's name, scheduled texts for reminders, and automatic handling of STOP and HELP replies. Our A2P 10DLC guide covers registration in detail.
4. Call routing, menus and business hours
Routing decides what happens the moment a call arrives. At minimum, check for:
- Phone menus. Press 1 for sales, press 2 for support. Ask whether menus can have more than one level.
- Business hours and closed days. Calls outside your hours should go somewhere sensible, not ring forever.
- Extensions. Callers on the main line can reach a specific person directly.
- Voicemail. Custom greetings and transcripts you can read instead of listening to every message.
Set up a test menu during your trial and call it from your own mobile. Five minutes of calling your own system tells you more than a feature list.
5. Recording, transcripts and AI
Call recording and transcripts are now common. The useful question is what the system does with them. Some produce a written summary and a list of action items after each call, so nobody has to take notes. Some offer an AI receptionist that answers calls when your team cannot, takes a message, and puts it in your inbox.
Questions to ask about AI features
- Which plan includes it, and how many AI minutes are included per user?
- What does each minute cost beyond what is included?
- When does the AI answer: after hours only, or also when nobody picks up during the day?
- Where do summaries and messages show up, and can the whole team see them?
Remember that recording calls has legal requirements that vary by state, including when you need consent from everyone on the call. Check the rules that apply to you before you turn recording on.
6. Pricing models and the real monthly bill
Headline prices are rarely the full bill. Most systems charge per user per month, then add metered charges for things like extra numbers, international calls, texting registration and AI minutes. To compare fairly, price out a realistic month for your team.
| Cost item | What to check |
|---|---|
| Per user price | Monthly vs yearly billing, and which plan has the features you need |
| Included usage | Calling and texting allowances, and the fair use terms |
| Extra numbers | Monthly price for each additional local or toll-free number |
| Texting registration | One time and monthly fees for 10DLC or toll-free verification |
| AI and add-ons | Included minutes and the per minute rate beyond them |
| Porting | Any fee to move your existing numbers in |
Also check how usage is paid. A prepaid wallet makes metered costs predictable, while open ended billing can surprise you at the end of the month.
7. Porting your existing numbers
If customers already know your number, keeping it matters. Ask how porting works, whether there is a fee, and what the provider does if a port fails. Plan for one to two weeks, and never cancel your old service before the port completes. Our guide on porting a business number walks through each step.
8. Admin visibility and analytics
Whoever runs the team needs to see what is happening without asking. Look for team level reporting on call volume, missed calls and response times, plus the ability to open any teammate's conversations when a customer escalates. If you manage a growing team, this matters more each month.
How to build your shortlist
- Write down your must haves from the first section.
- Pick three or four systems that cover them on a plan you can afford.
- Run a trial: set up a menu, send a few texts, leave yourself a voicemail.
- Price a realistic month, including numbers, registration and AI.
- Ask each provider about porting and texting registration before you sign.
Common names you will come across include OpenPhone, Dialpad, RingCentral, Aircall, Grasshopper and Google Voice. Each makes different tradeoffs on price, texting and team features, and their plans change over time, so check each provider's current pricing page. We keep side by side notes on our comparison pages.
Where CallRoute fits
CallRoute gives every teammate their own local or toll-free business number and puts calls, texts and voicemail in one shared inbox with an owner and admin view. Phone menus, business hours and extensions come on every plan, and Pro and Scale add call recording with AI summaries, team notes and analytics. Scale includes an AI receptionist that answers after hours and when nobody picks up. Plans start at $18 per user per month, with usage paid from one prepaid wallet. See the full pricing, or see how switching works.