February 13, 2026
ARPHost
What is a PBX System? A Technical Guide for Modern Businesses
Ever wondered what's running the show behind a company's phone system? It's not magic—it's a Private Branch Exchange, or PBX.…
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Latest news, tutorials, and updates from ARPHost
January 20, 2026
ARPHost
What Are PBX Systems: A Modern Guide for Business Communications
A PBX (Private Branch Exchange) is your company’s private, internal phone network. Think of it as an intelligent air traffic…
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November 15, 2025
ARPHost
How Do SIP Trunks Work: A Technical Guide for IT Professionals
At its core, SIP trunking works by replacing legacy physical phone lines (like PRI circuits) with virtual voice channels that…
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