What is a phone line?
A phone line is the connection that enables voice communication—whether through traditional copper wires or modern digital networks. For businesses, phone lines remain a critical part of daily operations, supporting customer calls, conferencing, and team communication.
Types of phone lines for business
Analog (POTS)
The original copper-based “Plain Old Telephone Service.”
Reliable for basic calling but limited in features.
Commonly found in small offices or as backup lines.
Digital
Uses digital signals for clearer quality and more flexibility.
Two common types:
ISDN (Integrated Services Digital Network) – An older digital standard that supports voice, video, and data.
VoIP (Voice over Internet Protocol) – Today’s leading choice for businesses. Runs over the internet, often at lower cost, and integrates with advanced phone system features.
Why businesses are shifting to VoIP
Cost savings – No need for traditional copper infrastructure.
Scalability – Add or remove lines as your team grows.
Advanced features – Call routing, voicemail-to-email, analytics, and more.
Flexibility – Use desk phones, mobile devices, or softphone apps.
Choosing the right option
Analog works for basic calling or fax lines.
VoIP is the best fit for most businesses, offering modern features and long-term flexibility.
ISDN is largely legacy and being phased out in favor of IP-based systems.
Find the right phone line solution for your business
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