Connection type
Internet phone: Internet phone services are connected using VoIP. Devices are connected via ethernet, WiFi, cellular data, or direct USB connection to an office computer.
Landline phone: Landline phones are connected through Private Branch Exchange (PBX) systems. Devices are connected via dedicated copper wiring and routed through a traditional telephone service provider.
Secure solution
Experience unparalleled reliability and trusted security with support for TLS 1.2 and 256-bit AES-GCM encryption, full geographically dispersed redundancy, and up-to-date certifications that help enable SOC2 and HIPAA compliance.
Voice quality
Internet phone: Internet phone service makes use of HD voice, producing the best quality audio for optimized business communications.
Landline phone: Landline phones make use of standard voice, often resulting in poorer quality audio than that of internet phones.
Features
Internet phone: Internet phone systems have all of the standard features found in landline phones – plus a host of advanced features, including call recording, video calling, audio & video conferencing, global calling, secure HD audio, integration with business software and applications, SMS messaging, automated virtual attendants, and integration with UCaaS systems.
Landline phone: Standard landline business phone features are typically limited to voicemail, caller ID, call waiting, and support for multiple phone lines. Some more advanced plans may offer conference calling, video support, and international calling.
Versatility
Internet phone: Internet phone service is maximized for versatility. Users can access VoIP services from almost any device. Calls can easily be transferred between devices without interruption. Users can make and receive phone calls anywhere in the world using the same phone number.
Landline phone: Landline business phone has limited, if any, versatility. Landline providers restrict calling to users who are physically located at the office. The number of business phone lines is limited by the volume of physical connections and the capacity of the PBX system. International calls are possible but often expensive.
Scalability
Internet phone: Internet phone service is maximized for versatility. Users can access VoIP services from almost any device. Calls can easily be transferred between devices without interruption. Users can make and receive phone calls anywhere in the world using the same phone number.
Landline phone: Landline business phone has limited, if any, versatility. Landline providers restrict calling to users who are physically located at the office. The number of business phone lines is limited by the volume of physical connections and the capacity of the PBX system. International calls are possible but often expensive.
Costs
Internet phone: The cost of internet phone service is often competitive and predictable. Costs scale with the needs of the business – desired features and number of users – but are typically significantly lower than traditional landline providers.
Landline phone: The cost of landline phone systems are moderate to high-cost and unpredictable, especially with international calling. While basic landline services can be reasonably priced, they can become exceedingly expensive with advanced features and a large number of users.
Device Compatibility
Internet phone: Internet phone systems have broad device compatibility. Access business phone service via computers, laptops, conference phones, USB phones, smartphones, and VoIP-enabled desktop phones.
Landline phone: Landline phones have limited device compatibility. Landline services typically only work with traditional, wired desktop phones.