Multi-line phone systems: why cloud wins for SMBs

You’re just about to close a brand-new customer when another number flashes across your screen. You’re so close to sealing this deal and you don’t want to hang up. So you let the call go to voicemail. But when you try to call back, no one picks up. There goes another potential customer.

If your phone system only handles one call at a time, you’re likely losing revenue each time you miss a call. A multi-line phone system can help you manage all this and more. And spoiler alert: you don’t need a closet full of hardware or a telecom contract to get one.

This article explains how multi-line phone systems work, what features to look for, and how to set one up quickly.

What is a multi-line phone system? 

A multi-line phone system lets you handle multiple phone calls at the same time using the same phone number. They also let you route and transfer incoming calls between team members without dropping them. That way, your business can take calls more efficiently, answer customers faster, and close more deals.

How many phone numbers does my business need?

The answer depends on how your business operates.

Here’s a quick chart to help you decide:

Team size	Lines you may need
Solo or one to two employees	One shared number
Small team, with one department or function	One shared number
Sales team plus front desk	Two shared number

Types of multi-line phone systems

There are two main approaches to setting up a multi-line phone system: traditional systems, or PBX, and Voice over Internet Protocol, or VoIP. One relies on physical hardware, the other on the internet.

Here’s a quick breakdown comparing PBX vs VoIP:

Feature	Traditional systems or PBX	Cloud-based systems or VoIP
Installation	Requires on-site wiring and a licensed technician	Download an app, log in, and start making calls
Cost	High upfront hardware costs, plus ongoing maintenance fees	Low monthly subscription with little to no hardware investment
Scalability	Limited by physical lines; adding new wiring means calling a technician	Add or remove lines anytime directly in your app settings
Time to add new users	Days, pending technician availability and installation	Minutes, set up directly in-app
Work on the road	Tied to a physical desk and a single location	Make and receive calls from any smart device, anywhere with an internet connection
Maintenance	Depends on in-house IT staff or external technicians	Handled by your provider
Reliability	Vulnerable to local outages and hardware failure	Highly reliable with a stable internet connection
Number of lines	Capped by the physical infrastructure you’ve paid for	Can be unlimited depending on your software and setup

Let’s take a more comprehensive look at cloud, or hosted phone systems, vs on-premises PBX.

Traditional systems, like PBX or landlines

Who it’s for: Single-location businesses with very low call volume that already have old infrastructure.

A traditional multi-line system routes calls through physical wiring installed on premises. It’s managed by a dedicated server box that a specialist sets up — and that same specialist needs to come back every time something needs to change. This is partly why PBX phone systems cost so much, which isn’t a fit for most small and growing businesses.

Here’s how it works in practice: each desk phone has a row of buttons, one per line. When a call comes in, the corresponding button lights up and you press it to answer. Two calls at once? You press button one, then button two. 

It’s a classic setup, but it comes with hard limits. If you have four lines, you can only handle four simultaneous calls across the entire office. Need a fifth? That’s a technician visit, more wiring, and more hardware.

It also keeps your team tied to their desks. Calls can only be made and received from the physical handset in the office.

Some businesses try DECT cordless phone systems to get more mobility in the office. But this still requires the same underlying hardware and infrastructure.

Cloud-based VoIP systems

Who it’s for: Any small or growing business, remote or hybrid teams, or anyone who wants flexibility without hardware costs.

A cloud-based VoIP system lets you make calls over your internet connection using devices your team already uses. For example, you can call from PCs, tablets, and smartphones, as long as you have an internet connection. Since you don’t have to invest in additional hardware, VoIP costs stay low.

So how do you take multiple calls?

Let’s say a second call comes in while you’re already on the phone. With a cloud-based VoIP, you get an on-screen notification, and you can just tap to accept the call. This automatically puts the first call on hold. Now, you can toggle between both without dropping either.

On Quo, you can also ring multiple devices with one number using the simultaneous ring feature. So if you don’t want to put an existing caller on hold, another teammate can pick up the incoming call from the same business number. 

Adding a new user to your account takes minutes, and you can do it yourself from your settings. 

How to set up a multi-line phone system 

Setting up a traditional multi-line phone system requires two to three months of work. After the technicians set up the right hardware, they’ll need to install physical phone line wiring in your business. Depending on your building, you might also need permission from the property owner. Need features like call recording or custom hold music? You might have to contact support and get a technician to help.

Cloud-based systems, in contrast, can get up and running in minutes. You don’t need any hardware or installation specialists to get started.

Here’s how the setup works in four steps:

Step 1. Choose your multi-line phone system provider 

First, pick a provider based on your team size, budget, and needs. We’ll explain more about what features to look for in the next section. 

Next, take advantage of free trials. This lets you try out multi-phone line phone systems to test shared numbers and see how reliable they are.

You can try Quo for free during a seven-day trial, for example.

Once you have a tool you want to try, pick a plan based on the following:

• The call handling and routing features you need
• How many team members will need access to the phone
• The price of the plan for the budget you have

Next, it’s time to pick your phone number. The best cloud phone systems, like Quo, allow you to move existing numbers to your new provider for free. When you’re testing the free trial, you can do so using a temporary number.

Step 2. Get your team set up on their devices 

Cloud multi-line systems are software-based. This means your setup starts with logging in and connecting devices rather than installing phone wiring.

First, download the Quo app on mobile or desktop, or log in via the web app. Desktop is typically best for setup and admin, as well as day-to-day work. The mobile app is best for staying accessible to customers on the go.

Next, all your team members do the same. Each person logs in with their own credentials and gets immediate access to their number.

Find the links to download the Quo app for desktop and mobile on our Download page. 

Step 3. Connect teammates to the shared business number

This is where you decide which teammates should have access to your shared business number. You can invite new team members in two ways:

1. Users who don’t have a Quo account yet. You can invite new users via email and assign them to a shared number or let them select a new phone number. Then set up their roles, like Member or Admin.
2. Existing users. Add them to a number directly from your phone number settings. 

Your team can be added to your shared number in about five minutes. Compare that to the old-fashioned PBX method, which can take weeks to set up.

Quo’s base plan supports up to 10 members on a shared number, which works well for most small and growing businesses. When you’re ready for more, you can upgrade to Business or Scale, which support unlimited members per number.

Here’s a step-by-step guide on sharing numbers with your team:

Step 4. Configure call handling 

Once your team is in the system, the last step is configuring how you’ll handle incoming calls.

There are three key settings to cover when you’re just starting out:

1. Business hours. These settings put you in control of when you receive calls. This helps you maintain work-life balance while maintaining professional customer service. You can also control what happens to calls during each period. For example, you might forward after-hours calls to an external number or send them to voicemail. Team members can also set individual work schedules for when they’re available to receive calls. This is great for shift-based teams.
2. Ring order. By default, all users on a shared number are dialed at the same time. But with a custom ring order, you can decide which teammates receive incoming calls first. This is useful for teams with different roles or availability. For example, your more senior reps may be called first. If they’re not available, calls can then ring more junior reps.

3. Fallback options. Decide what happens when nobody answers. For example, you can have Sona, Quo’s AI voice agent, pick up. This way, every call gets a response even when your team is unavailable, so you don’t lose business.

Quo lets you set up your call flow quickly from your settings using a visual drag-and-drop call flow builder. You don’t need to call technicians. Now you can be the expert who can take matters into your own hands.

Key features of a multi-line phone system 

With so many multi-line phone systems available, how do you know you’re choosing the right one?

Here’s a list of features to look for when evaluating possible options:

Call handling

Call handling features help you organize call flows, decide who gets calls first, and control where callers go when your team can’t pick up the phone.

This includes tools like:

• Call waiting. When you’re already on the phone, you can use this feature to answer a second inbound call quickly. With Quo, simply accept the new call to automatically put the first caller on hold. You can swap between both without dropping either.
• Ring groups. Decide which teammates should receive calls, and in what order. If a receptionist or rep is busy, for example, you can set calls to roll to the next available person automatically. No need to manually juggle calls yourself.
• Overflow rules. What if your team is busy and no one can pick up the phone? With Quo, you could route callers to voicemail or an external number. You could also set up an AI voice agent. That way, you can greet callers, take messages, and text links to important resources even after hours.
• Warm and cold call transfers. Move a live call to another teammate without asking the caller to hang up and redial. With a warm transfer, you can brief your teammate first. With a cold transfer, you simply route them over.

Routing and automation

The right routing and automation features make sure every call reaches the right person at the right time.

Look for the following so no one has to manually manage the queue:

• Call routing rules. Route incoming calls based on business hours, teammate availability, or department. With Quo, you can also set up a custom ring order.
• Auto-attendants or IVR. Setting up a phone menu, like “Press one for Sales,” helps callers route themselves to the right place. They can get help more quickly without someone on your team manually answering every call.
• Business hours and after-hours mode. Set up a different call flow for when your team is off the clock. This could be voicemail, forwarding to another number, or letting Sona pick up.

Team workflows

These features keep your team on the same page so calls, texts, and context don’t get siloed on one person’s phone. Look for:

• Shared numbers. All calls and texts to a shared number are visible to every member of the number. That means all team members can review the same customer conversation histories, so they have all the context they need to make quick decisions.
• Internal notes. Leave notes about specific customers under their contact thread in your phone system. You can also tag team members to ask questions or delegate tasks. This lets you communicate internally without needing to switch between multiple apps.
• Integrations with your CRM. Data syncs seamlessly with the tools you already use, like HubSpot, Salesforce, and Jobber. This way, everyone has the context they need to make quick decisions.

Reliability and call quality

Before committing to any provider, check their uptime track record and their general functionality. Watch out for:

• Call quality and uptime. Flashy features mean nothing if your calls keep dropping or the system goes down. Check user reviews for red flags about reliability, then check the website for an uptime guarantee.
• Spam blocking and call screening. Avoid junk calls and stop spam from tying up your number. That way, your team spends more time serving customers and less time dealing with frustrating robocalls.

Reporting and accountability

Reporting tools help you monitor how well your team handles calls and identify where they might improve. Look for:

• Call logs and outcomes. Track which calls were answered, missed, or went to voicemail. This gives you more visibility into how well your team performs. Plus, you can spot places where team members may need more support or training.
• Communication analytics. Keep tabs on metrics like call volume, pickup rate, and peak hours. You can use these to identify staffing gaps and provide more personalized coaching. That way, you can fix missed-call problems before they become a pattern.

Benefits of a multi-line phone system

Still not convinced a cloud multi-line phone system is the way to go? Here are several more benefits for your business:

• Zero missed opportunities. Inbound callers won’t get a busy signal if you have multiple phone lines available. Someone on your team can pick up from a shared phone number. You can also add Sona, Quo’s AI answering system, to take calls after hours. That way, being busy with a customer will never cost you another lead.
• Seamless team collaboration. Easily forward, transfer, and put callers on hold to consult with other team members in real time. With the right business phone system, it only takes a few seconds to put a customer on hold, check with a colleague, then switch back. Everyone can work together on the same conversations without interrupting each other.
• More professional customer experience. Give callers a better experience with a phone menu that routes them to the right person, a single business number your team answers from, and more.
• Scale as you grow. As your call volume increases, your phone service needs to keep up. With a cloud-based system like Quo, you can make unlimited calls on every plan. You can also add new numbers in seconds. This makes your business communications more scalable without added costs or hidden fees.

Quo: The best multi-line phone system for growing businesses

Managing multiple calls doesn’t require a closet full of hardware or a 36-month contract for copper wires and desk phones. For small and growing businesses, a cloud-based multi-line phone system gives you more capabilities for a fraction of the cost and effort. Plus, you can stay in touch with customers without being tied to a desk.

With shared numbers and call waiting, a second incoming call doesn’t mean a missed one. Someone else on your team picks up, you handle both with call waiting, or Sona steps in when everyone’s busy.

See why 90,000 customers and counting trust Quo to help build better customer relationships. Try Quo for free for seven days and never miss another call.

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