Practical articles from a North Carolina engineering team, with a new tip posted daily. Local Business VoIP is the small-business site of Carolina Digital Phone. Use these guides whether you buy from us or not.
140 guides. Newest post: October 14, 2026.
Troubleshooting
Date posted: October 1, 2026 A new desk phone sets itself up through a chain of seven steps. Here is where that chain breaks, what your network must provide, and who fixes what.
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Troubleshooting
Date posted: September 18, 2026 The call connects, the timer runs, and one of you is talking to silence. One-way audio has a short suspect list, led by a router feature called SIP ALG. Here is the plain-English version, a ten-minute isolation method, and what to hand your provider.
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Troubleshooting
Date posted: August 6, 2026 Dropped calls leave clues. A 25-year engineer's walkthrough of the real causes, from overloaded internet and weak Wi-Fi to power flickers and the router setting that silently breaks phones, plus the troubleshooting order that finds the fix without erasing the evidence.
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