VoIP Numbers: How Do They Work & How to Get One

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Cover image depicting a woman using a VoIP number

The shift from traditional phone lines to VoIP (Voice over Internet Protocol) is transforming business communication.

The global VoIP services market is projected to grow from $85.2 billion in 2021 to $102.5 billion by 2026, driven by demand for cost-effective, flexible, and feature-rich communication solutions. Businesses benefit from lower costs, scalability, and advanced features like call routing, analytics, and integrations.

This article explores what a VoIP number is, how it works, its benefits and challenges, and how businesses can set up VoIP systems to enhance communication while reducing expenses. Let’s dive in.

What is a VoIP number?

A VoIP number is a virtual phone number that allows users to make and receive calls over the Internet instead of using traditional phone lines. Unlike conventional landlines or mobile numbers tied to a physical location or SIM card, they provide flexibility and advanced features suitable for both personal and business use.

Types of VoIP numbers

There are several types of VoIP numbers that can be classified according to either their structure or their location. In terms of structure, there are:

Local VoIP number: Assigned with an area code, making businesses appear local to customers in that region and increasing reputation.
Toll-free VoIP number: Numbers with specific prefixes (e.g., 800, 888, 877) that allow customers to call businesses without incurring charges.
Vanity VoIP number: Custom numbers that usually spell out a word or phrase (e.g., 1-800-FLOWERS) to enhance brand recognition.

When it comes to the location the number is associated with, there are:

Fixed VoIP number: Tied to a physical address such as a company’s headquarters, offering more credibility and reducing fraud risks.
Non-fixed VoIP number: Not linked to a specific location, commonly used for international calling and temporary communication needs.

VoIP numbers vs Traditional numbers

While VoIP and traditional phone numbers both enable voice communication, they function differently.

VoIP numbers rely on the internet, offering flexibility, lower costs, and advanced features, while traditional phone numbers use landlines or cellular networks for reliability and familiarity. The table below outlines the key differences between the two.

Comparison table VoIP number vs Traditional number

How VoIP numbers work

VoIP numbers work by converting voice signals into digital data, allowing calls to be transmitted over the Internet rather than traditional phone lines. This process involves multiple steps:

📞 Call initiation: A user dials a VoIP number from a phone, app, or VoIP-enabled device. The call request is sent to the VoIP provider via an Internet connection.
🌐 Digital signal processing: The analog voice signal is converted into digital packets using VoIP codecs. Data compression optimizes bandwidth use while maintaining call quality.
🌩️ Cloud-based routing: The VoIP provider’s cloud servers determine the best route for the call. Calls can be directed to another VoIP user, a mobile number, or even a landline.
📡 Call transmission over IP networks: Data packets travel through the Internet using protocols like SIP (Session Initiation Protocol) or RTP (Real-Time Transport Protocol). Quality of Service (QoS) ensures minimal latency, jitter, and packet loss.
📲 Call reception and conversion: The digital packets are reassembled and converted back into voice signals. If the recipient uses a traditional phone, the VoIP provider connects to the PSTN (Public Switched Telephone Network) for compatibility.

To help you visualize the process better, we’ve prepared the schematic below.

Schematic image depicting how a VoIP number works

Why businesses need a VoIP number

A VoIP phone number can offer a flexible communication solution for businesses of all sizes. Unlike traditional systems, VoIP enhances connectivity, scalability, and efficiency, making it an essential tool for remote or hybrid teams. Here’s why businesses should consider switching to it:

Cost savings: Enjoy lower call rates, eliminate expensive hardware, and benefit from scalable pricing that grows with your business.
Global reach: Establish a presence in any region with local or toll-free numbers—no physical office required.
Scalability: Easily add or remove numbers as your team expands, ensuring seamless customer support and internal communication.
Advanced features: Access tools like call forwarding, voicemail-to-email, interactive voice response (IVR), analytics, and SMS integration.
Reliability: Stay connected from anywhere with an internet connection, minimizing downtime and ensuring business continuity.
Better team collaboration: Use a unified business number for internal and external communication, improving coordination and professionalism.

Thus, using a VoIP number empowers businesses with modern, efficient, and cost-effective communication solutions, ensuring seamless connectivity and enhanced customer service in the process.

How to get a VoIP number for your business

Setting up a VoIP phone number is simple and can be done by hitting a few key touchpoints. Here’s how your business can get started:

1. Choose a VoIP provider

Choosing the right VoIP provider for your business is the first step toward efficient communication. Compare solutions based on pricing, available features, scalability, and integrations with business tools like CRM or customer support platforms. You should go for a service with high uptime guarantees, strong security, and quality customer support.

Textmagic offers virtual mobile numbers, allowing businesses to send and receive SMS and MMS worldwide through one simple interface. Already have one? Bring your verified and compliant numbers to Textmagic and start messaging globally with ease.

2. Select a business number

VoIP services offer different number types to suit various business needs. A local VoIP number helps establish a regional presence, while toll-free numbers allow customers to call without charges. International numbers enable businesses to expand globally, and vanity numbers improve brand recognition with memorable digits.

3. Set up call routing & other features

After getting your VoIP, you need to configure its settings to optimize call handling. Set up call forwarding to ensure availability across devices and enable automated greetings for a professional experience. Adding IVR to your package can streamline customer inquiries by guiding callers through menu options.

4. Integrate with your business tools

VoIP works best when integrated with essential business tools, such as CRM for automatic call logging, customer support software for ticket routing, WhatsApp for seamless omnichannel communication, and so on. These automations can improve customer interactions while keeping all your channels unified within a single platform.

5. Test the service & deploy

Before fully adopting a VoIP system, conduct test calls to check audio quality, call routing accuracy, and voicemail functionality. Monitor system performance in the first few weeks, adjusting settings as needed for better efficiency. Regularly updating configurations and leveraging analytics can help optimize call handling.

How much do VoIP numbers cost?

The cost of VoIP numbers varies based on the provider, features, and usage. Here’s a general breakdown of pricing factors:

Monthly subscription costs: Basic VoIP plans start at around $20–$40 per user per month, with higher-tier plans offering advanced features.

Pay-as-you-go fees: Some providers charge additional fees per minute or per text, typically ranging from $0.01 to $0.05 per minute for calls.

Toll-free & local numbers: Toll-free VoIP numbers may cost $5–$20 per month, while international VoIP numbers vary by country.

Additional features: Features like call recording, IVR, analytics, and CRM integrations may come at an extra cost depending on the service.

VoIP number challenges

While VoIP numbers are a cost-effective and flexible communication solution, they also come with certain challenges that you should be aware of. From security concerns to common misconceptions, understanding these issues can help you make a smoother transition.

VoIP is exposed to vishing

One of the biggest concerns with VoIP numbers is vishing, a form of phishing that uses voice technology to deceive people into sharing sensitive information. To combat this, businesses should implement caller authentication, educate employees on phishing scams, and advise customers to verify calls before sharing any confidential information.

VoIP relies on Internet connectivity

Unlike traditional phone systems, VoIP requires a stable internet connection to function properly. To prevent disruptions, businesses should invest in a reliable broadband connection, consider backup internet solutions, and use VoIP providers that offer QoS settings to prioritize voice traffic.

VoIP has limitations for emergency calls

Unlike traditional landlines, VoIP numbers may not always provide accurate location tracking for emergency calls (911 or equivalent services). Businesses using VoIP should ensure that their provider supports E911 (Enhanced 911) services, which allow users to register their physical address for emergency purposes.

Dedicated numbers for compliant texting

Send and receive texts with Textmagic using dedicated business numbers.

Conclusion

VoIP numbers are revolutionizing business communication by offering cost savings, flexibility, and advanced features that traditional phone systems lack. As the VoIP market continues to grow, businesses of all sizes can benefit from scalable, internet-based calling solutions that enhance efficiency and customer engagement.

While challenges like vishing and Internet dependency exist, they can be mitigated with security measures and strong network infrastructure. Whether for local, toll-free, or international communication, VoIP will continue to provide a modern and reliable alternative to landlines.

Frequently Asked Questions (FAQs)

Yes! VoIP numbers are ideal for businesses, offering scalability, lower costs, and advanced features like call forwarding, voicemail-to-email, and multi-device access. You can also integrate VoIP with CRM, customer support, and messaging platforms for streamlined communication.

Yes, most VoIP providers support number porting, allowing you to transfer your current phone number to their service. The process usually requires ownership verification and can take a few days to finalize.

Yes, tracing a VoIP number is possible, but it can be challenging. VoIP calls transmit data like Caller ID and IP addresses, but this information can often be hidden or spoofed. Tracing may be easier if the call originates from a fixed VoIP phone linked to a physical address.

Still, you’ll typically only obtain an IP address, which may not provide an accurate geographical location. If you’re trying to identify a caller, online VoIP directories exist, but they are often incomplete and unreliable.

Verifying VoIP numbers is often necessary for security, compliance, and reliability. Verification helps prevent fraud, spam, and spoofing, ensuring that VoIP numbers are used legitimately.

Many carriers and messaging platforms require verification for regulatory compliance, such as 10DLC registration for business SMS in the U.S. Additionally, verified numbers are less likely to be flagged as spam, improving call and SMS deliverability.

Businesses and platforms also use VoIP number verification for two-factor authentication (2FA) and secure communications.

Yes, but like any internet-based service, VoIP numbers can be vulnerable to cyber threats if not properly secured. To enhance security, use encryption, strong authentication methods, and secure VoIP providers that offer fraud protection and compliance with security standards.

Alina Petcu Technical writer at Textmagic with a knack for UX. Focused on creating clear, concise product documentation and engaging marketing materials alike.

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