How to create a scalable call center from scratch and with low investment

• What is a call center and how does it work?
• Basic configurations of a virtual PBX for a call center.
• What do you need to create a call center from scratch?
• How to create a scalable call center.
• How much can it cost to set up a call center?
• Frequently Asked Questions (FAQs) – Call Center

If a communication project fails, it doesn’t have to be due to a lack of clients. Sometimes we have enough clients to generate revenue, but we don’t know how to manage communication with them. We haven’t planned in advance how to scale processes, technology, and team at the same time, and for this reason we are losing money.

We are going to explain specifically what a call center is, how to create a scalable call center with low investment, and what we need to know to build it from scratch.

What is a call center and how does it work?

A call center is a place -physical or virtual- where large volumes of calls are managed. Traditionally, this involved having offices with many agents working from the same location. Nowadays, this is no longer necessary because a call center can be created using VoIP technology, meaning it is cloud-based, so there is no need for an office, physical equipment, or mandatory staff presence. This type of virtual call center is what we are going to focus on throughout this article, as it is the one that allows us to scale easily.

Its operation is the same as a physical call center: an inbound or outbound call, routing based on criteria, and agents using support tools. The main difference is that the virtual model adds clear advantages such as flexibility, ease of implementation, adaptability, and many additional features that can be achieved with a virtual PBX for call centers.

The workforce can be located anywhere in the world, since virtual numbers are used to receive and make calls using a local phone number from the country where that agent is based. This, in turn, allows the company to grow as needed, because the team can be scaled up or down almost in real time by adding or removing extensions (agents).

Basic configurations of a virtual PBX for a call center.

This is where we define how calls come in, who answers them, and the experience the customer has from the very first second. That is why we consider these basic functions for configuring a PBX so that a call center can start operating from the very beginning.

Extensions – numbers.

With extensions, we organize our call center internally. This means that each agent or department has an assigned extension (number), and we use this to manage calls. In PBX systems such as Megacall, you can configure your extension so that calls are forwarded to another number or the voicemail is activated.

IVR menu.

One of the most basic and important configurations that must be set up for everything to work properly in your call center. Why? Because this is where we define how calls are distributed among agents, what customers hear when they contact the company, and we can configure features such as:

• Menu items, important if we want to differentiate by departments, so that the caller presses a button and is directed to the assigned extension.
• Uploading the audio file or text that is played during the call when the customer contacts the company.
• Setting hold music during a call.
• Defining the call center’s working hours; whether it operates 24/7, Monday to Friday, and whether it works on holidays, etc. Additional information in the Megacall PBX: during non-working hours you can load an additional greeting or activate voicemail.

Call recording.

We can also enable call recording for an extension so that later it can be useful, either for disputes or to analyze conversations. Important: for example, mention in the greeting that the call will be recorded.

PBX integration with CRM.

We recommend integrating the PBX with a CRM if we want to further optimize call center processes; for example, allowing agents to make calls with a single click, having a complete history of customer interactions, storing all the database in one platform, being able to track follow-ups, etc. Practically any call center should have a CRM in order to fully manage calls.

If we are looking for a scalable call center from the beginning, these types of configurations in the Megacall PBX are what truly provide that flexibility and allow us to add users when needed, or adjust it to a plan that fits the number of call center agents.

You can create a call center with both a small team of 1 to 5 agents or with much larger structures of more than 50, without that changing the way you manage or scale it.

What do you need to create a call center from scratch?

Creating a call center is not difficult nowadays, especially in a virtual environment. With a basic PBX setup, you can already run your call center from scratch, although we always recommend going a bit further to take full advantage of what a PBX can offer.

From experience, to create a call center you need at least the following:

• A virtual phone number. It will be the main channel through which calls are received and made.
• A virtual PBX. The system that manages these calls.
• A device to receive or make calls: either an IP phone, a softphone, a computer, etc.
• A CRM. Recommended if we want to fully track and manage call interactions.
• An internet connection. This is essential, since this entire virtual environment does not work without internet or if the connection is unstable.

How to create a scalable call center.

Once it is clear what is needed to set up a call center, the next step is choosing the provider on which the entire call system will be built.

In this context, working with PBX systems like Megacall covers the needs of a call center that is looking for long-term scalability, meaning it can start small and then grow without problems. To create a call center, you need to start by:

• Contracting one -or several- virtual phone numbers. This will depend on the number of users and the expected business growth. You can contract anything from local landline numbers to international numbers. Choose the Megacall plan that best fits your needs, or you can pay per number and top-up credit.
• Configure your PBX: extensions, set working hours, welcome message, voicemail, and more.
• Install the apps on your devices to manage calls.
• Your call center is ready to operate.

With these steps, you can set up a call center with a structure that can adapt as users or call volume increases.

How much can it cost to set up a call center?

It’s important to keep in mind that not all providers are designed to scale—not because they lack features, but because sometimes the issue lies in the cost model; platforms that work well initially but become expensive as you grow and add users/numbers or features.

In the case of Megacall, you can create a call center with a fully scalable PBX and low initial investment.

For small teams, the initial costs can be very affordable, since both the PBX, the softphone, and most of Megacall’s platform features are free, and you only pay for the selected phone number depending on the country chosen. This can start from around €2 per month with an annual plan, plus a credit top-up for outbound calls. This also applies to the Standard plan for €0.

On the other hand, there are paid pricing plans that, for €20 per month with annual billing, include up to 5 users, 1000 minutes of calls, and up to six voice menus. If we divide the price among the users in this plan, the cost is about €4 per user per month, and this gives access to all the advantages of a virtual PBX. You can check all plans here.

Price summary:

• Free plan €0: includes PBX, softphone, and most features. You only pay for the virtual number (from about €2/month depending on the country) and per-minute call credit.
• Paid plans: from about €20/month (annual billing) with a virtual number included and up to 5 users. Cost per user: €4/user/month.

Frequently Asked Questions (FAQs) – Call Center

Can calls be automated in a call center?

Yes, it is possible to automate a large part of a call center’s operations. On one hand, through IVR systems to automatically route calls to the appropriate agent or department. On the other hand, there is also the option of AI agents that can handle calls, answer frequently asked questions, or transfer inquiries to human operators 24/7 in more than 20 different languages.

Is it necessary to have an office to create a call center?

No, nowadays it is not necessary to have an office to create a call center. Thanks to virtual PBXs and cloud technologies, agents can work from anywhere using only a computer, mobile phone, or any device with an internet connection.

How can customer service quality be improved in a call center?

It can be improved with features such as call recording and call analytics, which allow us to review interactions, identify areas for improvement in customer service, and support decision-making with data such as response time, customer satisfaction, or even recurring agent errors. This helps maintain a quality standard even when call volume increases.

How can waiting times in call centers be reduced?

A well-configured IVR helps direct each call to the right agent from the start, avoiding unnecessary transfers. It is also key to set up call queues and routing rules to distribute volume evenly. AI agents can also help reduce waiting time, as they can handle calls that are in the queue.

Do I need technical knowledge to create a call center?

No, advanced technical knowledge is not required to create a call center. Most modern PBX systems are designed to be intuitive and allow users of all levels to configure the platform easily, and many of them include setup guides that make the process much simpler. In some cases, they also offer 24/7 support services for troubleshooting if needed.