Comparison Guide
VoIP / Cloud Calling vs Traditional Phone System
VoIP (Voice over IP) cloud calling systems like Cisco Webex Calling and Microsoft Teams Phone have largely replaced traditional PBX phone systems. The cost, feature, and flexibility advantages are significant.
Quick Answer
Traditional Phone System wins for most buyers.
Lower cost, more features, and better flexibility.
Side-by-Side Comparison
| Feature | VoIP / Cloud Calling | Traditional Phone System |
|---|---|---|
| Monthly Cost | $15-30/user | $30-50/line + maintenance |
| Hardware | IP phones or softphones | Proprietary PBX system |
| Remote Workers | Built-in mobile/desktop apps | Not supported |
| Scalability | Add users in minutes | Hardware limitations |
| Features | Video, chat, voicemail, IVR, analytics | Basic calling features |
| Maintenance | Provider-managed | On-site service contract |
Our Verdict
VoIP is the right choice for virtually all businesses. Cloud calling provides more features at lower cost with better flexibility for remote workers. Traditional phone systems are becoming obsolete as carriers phase out copper POTS lines.
Quick Picks
Which one should you pick?
Three buyer profiles, three answers. Pick the row that fits.
SMB / multi-site business
Pick: VoIP / Cloud Calling
20 to 500 seats, field or remote staff, and a copper bill that keeps climbing. Teams Phone runs $10-17/user/month, adds users in minutes, and there is no PBX closet left to maintain.
Get a VoIP migration quoteSites with analog dependencies
Pick: Traditional Phone System (for now)
Elevator lines, fire alarm dialers, fax machines, or a location without reliable broadband can justify keeping a few analog lines during a phased migration. Plan the exit before your carrier retires the copper for you.
Talk to a strategistIn-house IT / licensing-only
Pick: VoIP / Cloud Calling (self-managed)
Already on Microsoft 365? Unio can license Teams Phone or Webex Calling, port your numbers, and configure auto attendants plus E911 dispatchable location, then hand your team the admin keys.
Price licensing and setupWhy Work With Unio Digital?
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Frequently Asked Questions
Learn More About VoIP
Visit our comprehensive VoIP page for detailed information about our capabilities and approach.
Explore VoIP ServicesSources & Methodology
Specifications, pricing, and product capabilities cited on this page are sourced from public vendor documentation as of the dates shown below. Vendor product lines change quickly; verify current specs and pricing directly with each vendor before purchasing.
- Microsoft Teams Phone Standard is priced at $10.00/user/month paid yearly, Teams Phone with a US Calling Plan (3,000 domestic minutes) is $17.00/user/month, and the domestic plus international calling plan is $34.00/user/month. A separate Microsoft Teams license is required. [source] · verified 2026-07-01
- In order FCC 19-72 (adopted July 26, 2019), the FCC granted forbearance from requiring price cap incumbent carriers, the largest local phone companies, to unbundle analog voice-grade copper loops, finding that TDM voice service, particularly over copper, is 'rapidly becoming obsolete.' Those UNE analog loops can only provide legacy POTS voice, not IP-based services. [source] · verified 2026-07-01
- FCC Form 477 data cited in FCC order 19-72 showed interconnected VoIP subscriptions (64.5 million) had already overtaken traditional switched-access phone lines (54.7 million) in the United States as of June 2017, alongside 336 million mobile subscriptions. [source] · verified 2026-07-01
- SIP (Session Initiation Protocol), the application-layer signaling protocol used to create, modify, and terminate VoIP call sessions, is an IETF standards-track protocol defined in RFC 3261, published in June 2002. [source] · verified 2026-07-01
- Under Kari's Law, any multi-line telephone system manufactured, imported, offered for first sale or lease, first sold or leased, or installed after February 16, 2020 must support direct 911 dialing with no prefix digit (such as dialing 9) plus on-site notification. FCC order 19-76 applies these rules and RAY BAUM'S Act dispatchable-location requirements to both legacy PBX and IP-based cloud calling systems. [source] · verified 2026-07-01