Setting up a business phone for a small team.

Decide what kind of number you want

Before anything else: a local number, a toll-free number, or the number you already have. The options for getting one range from a second mobile line through virtual numbers to full phone platforms, and they differ in price shape (per user or flat), in what they need from you to verify your identity, and in what they do for emergency calls.

How to get a business phone number compares eight option types with real team pricing. For the local-versus-toll-free question specifically, see local vs toll-free.

Pick the area code for the area you serve

For a local business the area code is a small signal that you are nearby. It is not always obvious which one to choose: many regions have overlay codes, a service area can straddle two codes, and a second location raises the question of a second number.

Which area code should your business phone number use? works through overlays, adjacent markets, multiple locations and what to check before you buy.

One main number, or a line for everyone

A single main number that routes to the right person keeps the business reachable when people change roles or leave. Direct numbers per employee give customers a straight line to their contact, but each one is another number to manage, and one to recover when somebody leaves. The third arrangement is a hybrid: a main number, plus direct lines only for the few people customers genuinely need to reach directly.

One business phone number vs individual numbers compares the three arrangements, including texting and offboarding.

If you already have a number, bring it

An existing business number can usually be ported, and the old line keeps carrying calls while the transfer runs. The one rule that matters most is not to cancel the old service before the port completes.

Porting your existing number covers the rules and why ports get rejected; how long does it take to port a phone number? gives the timelines by number type and country.

Write the menu

The greeting is the only part of the setup every caller experiences. Short, built around what callers ring about, with the option named before the key to press. Most small businesses need two to four options.

Phone menu scripts for small business has copy-ready scripts for six kinds of business, plus after-hours and urgent wording and a way to test them. Designing a phone menu people do not hate covers the principles.

Choose how each option rings

In general practice, phone systems offer a few patterns. Ring everyone at once when the answer is "whoever is free". Ring in order when there is a real first choice with a backup. A call queue, where callers wait in line for the next available agent, is a different tool built for teams of interchangeable agents.

Call queue vs ring group vs auto attendant explains what each does when everybody is busy and which small-team scenarios need which. Auto Attendant keeps to the sequential pattern: each option rings up to three phones one after another (and the call shows your business number), takes a voicemail, or plays a message; it never rings phones together and has no queues.

Check you can take the calls you get

"How many lines do we need?" hides several different quantities: public numbers, people, devices and calls in progress at the same moment. The last one is the one that decides whether a caller gets through at your busiest hour.

How many phone lines does your small business need? is a worksheet for sizing it, with questions to ask any vendor and a test to run before you switch over.

Last, decide what happens after hours

Outside opening hours callers should hear something that tells them what will happen: a voicemail with a promised call-back time, or a route through to whoever is on call if your late calls are emergencies. Missed calls and after hours covers what unanswered calls cost and the options for covering them, including building an on-call plan for a small trade team. In Auto Attendant, outside business hours callers hear your closed message and then leave a voicemail or the call ends; it does not forward calls after hours.

An illustration: a seven-person team

This is an illustration with invented details, not a case study. Imagine a seven-person electrical and lighting business that works out of two vans and a small office. Walking the decisions above, it might end up here.

• Number. One local number in the area code its customers use, printed on the vans, the website and invoices. The owner keeps a personal mobile that is not published anywhere.
• Menu. Three options: a new job or quote, an existing job, and an urgent fault. The greeting is about eight seconds long and names each option before its key.
• Routing. New jobs ring the office phone. Existing jobs ring the office too, where the job file is. The urgent option rings the mobile of whoever is on call that week, then the owner's if it goes unanswered, changed in the menu when the rota changes.
• Capacity. The team expects, at most, two customers calling in the same few minutes at the start of the working day, so two simultaneous conversations are the sizing target.
• After hours. From 6pm a closed message says when the office opens and takes a voicemail, which is emailed to the office and the on-call lead.

The shape matters more than the details. Every decision was made once, written down, and tested by ringing the number from a phone that is not on the team. The example setup page shows a similar fictional configuration in full, and the electrician, plumbing and general contractor guides give menus for businesses of that kind.

The setup checklist

1. Decide the kind of number: new local, toll-free, or one you already advertise.
2. Choose the area code and write down why. Check for overlays and a second service area.
3. If porting, collect the current account details first and do not cancel the old service.
4. Write the greeting with no more than three or four options; read it aloud and time it.
5. For each option, name who answers and what happens if they do not: another mobile, or voicemail.
6. Write the after-hours and weekend greetings separately from the weekday one.
7. Work out how many calls can plausibly arrive in the same few minutes.
8. Ring every option from an outside phone, in and out of hours, and keep a note of the result.
9. Put a quarterly reminder in a calendar to repeat step 8.

The main business greeting, after-hours greeting and one-person office templates give wording for steps 4 and 6.

Rules and standards behind the decisions

This is general information, not legal advice. The sources are listed at the end of the page.

Numbers. North American numbers are assigned under the North American Numbering Plan, and NANPA is the national administrator for the United States and its territories.1 Canada has its own Canadian Numbering Administrator, which publishes area code and central office code information.2 Both are the right place to confirm an area code rather than relying on a vendor's list.

Porting. A US carrier must complete a simple wireline-to-wireline or intermodal port within one business day unless a longer period is requested, and a non-simple port within four.3 For a simple port the rule limits the data a carrier may require to a defined list of fields, which include the number being ported, the account number and the zip code, with a passcode optional unless one was assigned.4 Collect those before you start.

Toll-free. Toll-free numbers are administered differently from geographic numbers, through responsible organisations known as RespOrgs.5 The FCC's plain-language explainer covers how they work.6 See local vs toll-free before you decide.

Capacity. Telephone engineers measure offered load in erlangs, where carried traffic is the average number of concurrent calls over a period.7 For a small team you do not need the formulae. You need the idea behind them: the number that matters is how many calls are in progress at the same moment, not how many calls you receive in a day.

911. Federal rules for multi-line telephone systems require that a user can dial 911 directly without a prefix such as 9, and that, where the system can be configured to do so, a notification goes to a central location at the facility.8 If your team keeps dialling out from its own mobiles, those mobiles carry their own emergency calling; read emergency calling for what that does and does not mean.

Pitfalls worth avoiding

• Cancelling the old line before the port completes. This is the one unrecoverable mistake; the porting page explains why.
• Choosing an area code for prestige. A number from a distant city can read as a business that is not local to the customer.
• Building a menu around your org chart. Callers do not know your departments.
• Adding options one request at a time. Each looks reasonable and together they make a menu nobody finishes.
• Sizing capacity by headcount. Seven employees do not need seven simultaneous lines; a business with a morning rush may need more than its headcount suggests.
• Not testing from outside. The only reliable check is to call from a phone that is not on the team, at the hours your customers call. This menu test checklist gives a way to do it.
• Forgetting who owns the number. Keep the account and the number registered to the business, not to one employee's personal account; keeping, porting or replacing a personal cell number covers the options.