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13 min read

What Is VoIP? (Voice Over Internet Protocol Explained)

What Is VoIP? (Voice Over Internet Protocol Explained)

VoIP (Voice over Internet Protocol) is a technology that enables voice calls over a broadband internet connection instead of traditional phone lines. VoIP systems convert your voice from analog sound waves into compressed digital data, then transmit that data in small packets over the internet to reach the person you're calling. This process happens almost instantly, delivering clear call quality while bypassing the costly infrastructure of traditional telephone networks.

For Canadian small businesses, VoIP represents a practical upgrade from conventional phone systems. You can make and receive calls from any internet-connected device, including desk phones, computers, smartphones, and tablets. The technology eliminates the need for expensive on-premises equipment and dedicated phone lines, while providing professional features like auto attendants, call recording, and voicemail-to-email that were once available only to large enterprises.

Many businesses partner with managed IT services providers to handle VoIP setup, configuration, and ongoing optimization, ensuring smooth deployment and reliable performance.

How Does VoIP Work?

VoIP works by converting your voice into digital packets and routing them over the internet instead of through traditional phone lines. When you speak into a VoIP phone or softphone app, your voice is captured as an analog signal, converted to digital data by a codec (compression/decompression program), broken into small data packets, and transmitted via your internet connection to the recipient.

Here's the step-by-step process:

  1. Your VoIP device connects to your router via your Local Area Network (LAN) or WiFi.
  2. When you dial a number, your phone notifies your VoIP service provider to establish the connection.
  3. Your voice is converted from analog sound waves into digital data using an Analog-to-Digital Converter (ADC).
  4. The digital data is compressed and divided into small packets for efficient transmission.
  5. These packets travel over the internet to the recipient's location.
  6. The recipient's VoIP device reassembles the packets and converts them back into clear audio.

This entire process occurs in milliseconds, ensuring real-time conversation quality. VoIP systems use standardized protocols like Session Initiation Protocol (SIP) to manage connections, ensuring compatibility between different devices and providers. If you're calling a traditional landline number, your VoIP provider converts the digital signal back to an analog format before it reaches its destination.

The technology bypasses the Public Switched Telephone Network (PSTN) entirely, which is why VoIP can offer significantly lower costs than traditional phone service.

VoIP vs. Traditional Phone Systems: What's the Difference?

VoIP uses your internet connection to transmit calls, while traditional landlines rely on physical copper wires and the PSTN infrastructure. This fundamental difference creates distinct advantages for VoIP, particularly for small businesses managing costs and supporting flexible work arrangements.

Key differences at a glance:

Feature VoIP Traditional Landline
Infrastructure Internet-based, cloud-hosted Physical copper lines, on-premises equipment
Setup Cost Minimal ($0-$60 per line) High ($50-$100 per line installation)
Monthly Cost $13-$35 per user (Canada) $40-$80 per line
Hardware Required Internet connection, optional IP phones Dedicated phone lines, PBX system
International Calls Often included or $0.01-$0.05/min $1.00-$2.00/min
Advanced Features Auto attendant, call recording, mobile apps, video conferencing Limited, requires expensive add-ons
Scalability Add users instantly via software Requires technician, physical installation
Remote Work Full support, use from anywhere Location-dependent
Maintenance Provider-managed, automatic updates Requires on-site IT support

 

Traditional phone systems require significant upfront investment in physical equipment and ongoing maintenance contracts. VoIP eliminates these costs by moving everything to the cloud, where your service provider handles updates, security, and maintenance. For Canadian small businesses with remote teams or multiple locations, VoIP offers unified communication across all locations without installing separate phone systems in each office.

The flexibility extends to how you make calls. With landlines, you're tied to a physical desk phone at a specific location. VoIP lets you take calls on your laptop in a coffee shop, answer through a mobile app while traveling, or use a desk phone in the office, all using the same business number.

What Equipment Do You Need for VoIP?

You need three essential components for VoIP: a reliable broadband internet connection, a VoIP service provider subscription, and a device to make calls (IP desk phone, computer with softphone software, or mobile device with VoIP app). For most Canadian small businesses, your existing internet connection and devices are sufficient to get started.

Minimum internet requirements:

  • Speed: 100 kbps (0.1 Mbps) upload and download per concurrent call
  • For 5 simultaneous calls: minimum 0.5 Mbps dedicated to VoIP
  • Recommended: 5-10 Mbps or higher to account for other internet activities

Device options:

  • IP Desk Phones: Physical phones designed specifically for VoIP that plug directly into your network router. Prices range from $80 to $600 depending on features. Many providers offer phones at discounted rates or include them in service plans.
  • Softphone Applications: Software installed on computers, laptops, or tablets that turns your device into a phone. You'll need a headset with microphone. Most VoIP providers include softphone apps at no additional charge.
  • Mobile Apps: Smartphone applications that let you make business calls using your VoIP service. Works over WiFi or cellular data. Ideal for Canadian small businesses with field workers or remote teams.
  • Analog Telephone Adapters (ATA): If you want to keep using existing traditional phones, an ATA converts analog phones to work with VoIP. These adapters cost $40-$100 and plug into your internet router.

Optional equipment for enhanced performance:

  • Quality router with Quality of Service (QoS) settings to prioritize voice traffic
  • Network switch for offices with multiple IP phones
  • WiFi extenders for larger office spaces to ensure consistent coverage

For small businesses just starting with VoIP, the most cost-effective approach is using softphone apps on existing computers and mobile devices. This eliminates upfront hardware costs while you evaluate the service.

What Are the Key Benefits of VoIP for Business?

VoIP delivers substantial cost savings, typically reducing phone expenses by 30-50% compared to traditional systems, while providing advanced features and flexibility that support modern business operations. For Canadian small businesses, these benefits translate to lower overhead, improved customer service, and the ability to compete effectively without large IT budgets.

Cost Savings

VoIP eliminates the expensive infrastructure required by traditional phone systems. You avoid costs for dedicated phone lines, on-premises PBX equipment, and installation technicians. Monthly service plans for Canadian small businesses typically range from $13 to $35 per user, compared to $40-$80 per line for traditional service. Long-distance and international calls are often included or cost as little as $0.01 per minute to major destinations, compared to $1.00-$2.00 per minute on landlines.

Professional Features Without Premium Pricing

Small businesses gain access to enterprise-grade capabilities that were previously affordable only for large corporations. Standard features include auto attendants (virtual receptionists), call recording, call forwarding, voicemail-to-email transcription, conference calling, and mobile apps. These features integrate into your service plan rather than requiring expensive add-ons.

Scalability and Flexibility

Adding or removing users takes minutes through your provider's web portal. There's no need to schedule technician visits, run new phone lines, or purchase additional hardware. This scalability is particularly valuable for Canadian small businesses experiencing seasonal fluctuations or rapid growth.

Remote Work Support

Employees can work from anywhere with an internet connection while maintaining full access to your business phone system. Your team members use the same business number whether they're in the office, at home, or traveling. This flexibility has become essential for attracting talent and maintaining business continuity.

Superior Call Quality

Modern VoIP uses advanced codecs (like G.722 for HD voice) that deliver clearer audio than traditional landlines. With a proper internet connection, VoIP call quality is consistently excellent.

Integration Capabilities

VoIP systems integrate with business software you already use. Connect your phone system with CRM platforms (like HubSpot or Salesforce), email, Microsoft Teams, Slack, and other productivity tools. When a customer calls, their information automatically appears on your screen, enabling more personalized service.

Business Continuity

Cloud-based VoIP systems include built-in redundancy. If your internet goes down, calls automatically forward to mobile phones or alternative numbers. Your business remains reachable even during power outages or unexpected disruptions.

What Are the Disadvantages of VoIP and How to Overcome Them?

VoIP depends entirely on your internet connection for call quality and reliability, making a stable broadband connection non-negotiable. However, with proper planning and configuration, you can effectively address VoIP's limitations and enjoy reliable business communication.

Internet Dependency

VoIP requires consistent internet service. Poor connection quality causes dropped calls, audio delays, or choppy sound.

Solution: Before switching to VoIP, test your internet connection using speed test tools. Ensure you have at least 100 kbps available per concurrent call. Most Canadian business internet plans (25 Mbps or higher) easily support VoIP for small teams. Configure Quality of Service (QoS) settings on your router to prioritize voice traffic over other data activities.

Power Outages

Unlike traditional phone lines that work during power failures, VoIP phones require electricity and internet.

Solution: Set up automatic call forwarding rules in your VoIP system to redirect calls to mobile phones during outages. Your team can continue handling business calls using mobile VoIP apps over cellular data. Consider a battery backup (UPS) for your router to maintain service during brief power interruptions.

Emergency Services (911) Considerations

VoIP uses Enhanced 911 (E911) service, which requires you to register your physical location with your provider.

Solution: When setting up your VoIP service, provide accurate location information for each phone or extension. Update this information if employees move to new locations. Most Canadian VoIP providers comply with CRTC regulations for emergency services. For remote workers, ensure they update their location settings in softphone apps.

Initial Learning Curve

Switching from traditional phones to VoIP requires some adjustment for staff unfamiliar with the technology.

Solution: Most VoIP systems are intuitive and designed for easy adoption. Choose a provider offering training resources and responsive support. Schedule a brief training session when rolling out the system, focusing on essential features like call forwarding, voicemail access, and mobile apps.

Call Quality Issues

Insufficient bandwidth, network congestion, or poor equipment can degrade call quality.

Solution: Conduct a network audit before implementation. Upgrade your internet plan if needed. Use wired Ethernet connections for desk phones when possible, as WiFi can introduce inconsistencies. Ensure your router firmware is up-to-date and supports VoIP traffic prioritization.

Security Concerns

VoIP traffic travels over the internet, raising questions about call privacy and security.

Solution: Reputable Canadian VoIP providers use encryption protocols (like SRTP - Secure Real-time Transport Protocol) to protect calls. Implement strong passwords, enable multi-factor authentication, and keep VoIP software updated. These security measures make VoIP as secure as, or more secure than, traditional phone lines.

For Canadian small businesses, these disadvantages are manageable with proper setup. The cost savings and feature advantages typically far outweigh the limitations.

What Features Should You Look for in a VoIP System?

Look for VoIP systems offering unlimited calling within Canada and the US, mobile and desktop apps, auto attendant functionality, call recording, and integrations with your existing business software. These core features ensure professional communication capabilities while supporting flexible work arrangements for Canadian small businesses.

Essential Features:

  • Unlimited Calling: Verify that calling within Canada and the US is included without per-minute charges. Check international rates if you regularly call other countries.
  • Mobile and Desktop Apps: Your team needs the ability to make and receive business calls from any device, whether in the office, at home, or traveling. Quality providers offer apps for iOS, Android, Windows, and Mac.
  • Auto Attendant: A virtual receptionist that greets callers and routes them to the appropriate department or team member. This feature makes small businesses appear more professional without hiring a full-time receptionist.
  • Call Recording: Essential for training, quality assurance, and record-keeping. Ensure the feature includes easy access to recordings and adequate storage.
  • Call Forwarding and Routing: The ability to route calls based on time of day, caller ID, or department. Set up forwarding rules that send calls to mobile phones during off-hours or when you're away from your desk.
  • Voicemail-to-Email: Receive voicemail messages transcribed and sent to your email, allowing you to review messages quickly without checking a separate system.
  • Call Analytics: Basic reporting on call volume, duration, missed calls, and peak calling times helps you understand communication patterns and optimize staffing.

Valuable Advanced Features:

  • CRM Integration: Connect your phone system with customer relationship management platforms like HubSpot, Salesforce, or Zoho. When customers call, their information automatically displays on your screen.
  • Video Conferencing: Built-in video meeting capabilities eliminate the need for separate video conferencing subscriptions.
  • Team Messaging: Integrated instant messaging for internal communication keeps your team connected without switching between multiple apps.
  • Call Queuing: Hold incoming calls in a queue when all lines are busy, with customizable hold music and estimated wait times.
  • Number Masking: Display your business number as caller ID even when calling from personal mobile phones, maintaining professional appearance.
  • Multi-Level IVR: Interactive Voice Response systems with multiple menu levels for larger businesses with complex routing needs.
  • Call Whisper and Barge: Supervisory features allowing managers to listen to calls or join conversations for training and quality purposes.

What to Avoid:

Be cautious of providers charging extra for basic features like call forwarding or voicemail. These should be included in standard plans. Verify that the mobile app is included at no additional charge. Confirm there are no hidden fees for common features you'll use regularly.

For Canadian small businesses, prioritize providers offering local phone numbers in your area, Canadian-based customer support, and compliance with Canadian telecommunications regulations.

Is VoIP Right for Your Canadian Business?

VoIP is an excellent choice for Canadian small businesses if you have reliable internet service (5+ Mbps), need to reduce communication costs, support remote or hybrid work, or want professional phone features without enterprise-level investment. The technology has matured to where it reliably serves businesses of all sizes across Canada.

VoIP is particularly beneficial if your business:

  • Operates with Remote or Hybrid Teams: VoIP enables seamless communication regardless of employee location. Team members access the full phone system whether working from home, the office, or on the road.
  • Makes Frequent Long-Distance Calls: With traditional phone service, long-distance charges accumulate quickly. VoIP typically includes unlimited calling across Canada and the US, with international rates starting around $0.01 per minute.
  • Needs to Scale Quickly: Adding new users to VoIP systems takes minutes and requires no technician visits or physical installation. This flexibility is valuable for growing businesses or those with seasonal staff fluctuations.
  • Wants Professional Features on a Budget: Auto attendants, call recording, voicemail-to-email, and mobile apps are standard with VoIP, whereas traditional phone systems charge premium prices for these capabilities.
  • Uses Business Software and CRM Systems: VoIP integrates with tools like Microsoft Teams, Slack, Salesforce, and HubSpot, creating a unified communication platform that improves efficiency.
  • Has Multiple Locations: VoIP unifies communication across offices without installing separate phone systems at each location. All locations operate as one unified system with easy internal calling.

VoIP may require additional consideration if:

  • Your Internet Connection is Inconsistent: VoIP depends on stable internet. If you experience frequent outages or have bandwidth limitations, address these issues before switching. Rural Canadian businesses should verify adequate broadband availability.
  • Your Team is Uncomfortable with Technology: While VoIP systems are user-friendly, some adjustment is required. Ensure you choose a provider offering strong training and support resources.
  • You Have Specialized Equipment: Businesses with alarm systems, elevator phones, or point-of-sale systems connected to traditional phone lines should verify compatibility with VoIP or plan for analog telephone adapters.

Decision Framework:

Calculate your potential savings by comparing current phone expenses against VoIP pricing quotes. Evaluate whether your internet connection meets minimum requirements (conduct speed tests). Assess how important mobility and remote work capabilities are for your business model. Consider your growth plans and whether easy scalability matters. Determine if integration with existing software would improve operations.

For the vast majority of Canadian small businesses, VoIP delivers significant advantages in cost, flexibility, and functionality. The technology has become the standard for business communication, with traditional landline services being phased out across Canada. Making the switch now positions your business with modern infrastructure that supports growth and adapts to changing work environments.

Bottom Line

VoIP technology transforms how Canadian small businesses communicate by delivering professional phone capabilities over internet connections at a fraction of traditional phone system costs. With monthly plans starting around $13-$35 per user, minimal setup requirements, and the flexibility to work from anywhere, VoIP eliminates the barriers that once made enterprise-grade communication systems accessible only to large corporations.

The transition is straightforward, typically completed within 1-2 weeks with no business disruption. You keep your existing phone numbers, gain access to advanced features like auto attendants and call recording, and achieve immediate cost savings of 30-50% or more on monthly communication expenses.

As traditional phone infrastructure continues being phased out across Canada, adopting VoIP isn't just about saving money or gaining features. It's about building communication infrastructure that scales with your business, supports modern work arrangements, and provides the reliability and professionalism your customers expect.

Partnering with experienced managed IT services providers ensures your VoIP system integrates seamlessly with your existing technology infrastructure, maximizing your investment and minimizing disruption during the transition.


Frequently Asked Questions About VoIP

Can you use VoIP on a cell phone?

Yes, you can use VoIP on cell phones through mobile apps provided by your VoIP service provider. Most Canadian VoIP providers offer free iOS and Android apps that turn your smartphone into a business phone. The apps work over both WiFi and cellular data (4G/5G), allowing you to make and receive calls using your business number from anywhere. You access all phone system features including voicemail, call forwarding, and contact lists directly through the app.

Does VoIP work during power outages?

VoIP desk phones stop working during power outages because they require electricity for both the phone and your internet router. However, you can maintain business continuity by using mobile VoIP apps on smartphones, which operate on cellular networks independent of office power. Most VoIP systems also allow you to set up automatic call forwarding rules that redirect calls to mobile phones when your office internet connection is unavailable. For critical situations, consider a battery backup (UPS) for your router to maintain service during brief outages.

How does VoIP handle 911 calls in Canada?

VoIP uses Enhanced 911 (E911) service that transmits your registered location to emergency dispatchers when you call 911. When setting up your VoIP service, you must register the physical address for each phone or extension. This ensures emergency services can locate you. Canadian VoIP providers comply with CRTC regulations requiring E911 capability. If you use VoIP from different locations (like remote work), update your location information in your system settings or mobile app so dispatchers receive accurate information.

What internet speed do you need for VoIP?

VoIP requires a minimum of 100 kbps (0.1 Mbps) upload and download bandwidth per concurrent call. For a small business with 5 employees potentially on calls simultaneously, you need at least 0.5 Mbps dedicated to VoIP, though 5-10 Mbps total internet speed is recommended to account for other business activities. Most Canadian business internet connections (25 Mbps or higher) easily support VoIP for small teams. Run a speed test using sites like speedtest.net to verify your current internet speed meets requirements before switching to VoIP.

Can you keep your existing phone number with VoIP?

Yes, you can transfer your existing business phone number to VoIP through a process called number porting. You provide your new VoIP provider with information from your current phone bill, including account number, billing address, and authorized contact name. Your VoIP provider handles the technical transfer with your existing phone company. In Canada, number porting typically takes 7-14 business days. Your current phone service remains active until the port completes, ensuring no gap in service. There's usually no charge or a minimal fee ($0-$25) for porting numbers.

Is VoIP secure for business calls?

Yes, VoIP is secure for business communications when properly configured. Reputable Canadian VoIP providers use encryption protocols like SRTP (Secure Real-time Transport Protocol) that protect voice data during transmission, similar to how HTTPS secures web traffic. The technology is as secure as or more secure than traditional phone lines, which can be physically tapped. To maximize security, use strong passwords, enable multi-factor authentication on your VoIP accounts, keep software and firmware updated, and choose providers that comply with Canadian privacy regulations and industry security standards.

What's the difference between hosted and on-premises VoIP?

Hosted VoIP (cloud-based) is managed entirely by your service provider, requiring no on-site equipment beyond phones and internet connection. The provider handles maintenance, updates, and security. This option costs $13-$35 per user monthly with minimal upfront investment, making it ideal for Canadian small businesses. On-premises VoIP requires purchasing and maintaining your own server equipment at your business location, offering more control but requiring significant upfront investment ($5,000+) and ongoing IT support. For small businesses, hosted VoIP delivers better value, easier scalability, and professional management without technical expertise requirements.

How reliable is VoIP compared to traditional phone service?

Modern VoIP services are highly reliable, with top providers offering 99.9% or higher uptime. Reliability depends primarily on your internet connection quality. With a stable broadband connection and proper network configuration (like Quality of Service settings), VoIP delivers consistent performance comparable to or exceeding traditional landlines. Cloud-based VoIP systems include redundancy and failover capabilities, automatically routing calls through backup paths if issues occur. Unlike traditional phone lines that can be damaged by physical disruptions, VoIP systems continue functioning as long as internet connectivity remains available from any location.

Can you use VoIP with your existing desk phones?

Yes, you can use traditional analog desk phones with VoIP by connecting them through an Analog Telephone Adapter (ATA). The ATA converts analog signals to digital VoIP format, allowing your existing phones to work with your new VoIP system. ATAs cost $40-$100 and plug into your internet router. However, using traditional phones with ATAs means you miss features available on IP phones and softphone apps, like video calling, on-screen contact lists, and visual voicemail. Many Canadian small businesses find that softphone apps on existing computers and mobile devices provide better functionality at no additional hardware cost.

Do you need a VoIP phone or can you just use a computer?

You don't need a physical VoIP phone and can use your computer with a softphone application instead. Softphone software turns your computer into a fully functional business phone, requiring only a headset with microphone. Most Canadian VoIP providers include softphone apps for Windows and Mac at no additional charge. This approach eliminates hardware costs entirely while providing full access to phone system features. Many small businesses use a combination: softphone apps for remote workers, desk IP phones for reception areas or shared workstations, and mobile apps for staff who work in the field or travel frequently.