The 3 Most Common VoIP Issues I See in Microsoft Teams (And Why They're Usually Not Your Fault)

After supporting unified communications environments across federal and commercial deployments, the same three problems show up again and again in small and mid-size businesses that set up Teams calling on their own — or had a generalist IT vendor do it.

1. Voicemail that silently swallows calls

This is the most common one. Calls ring, nobody answers, and the caller gets... nothing. No voicemail prompt, no recording, no notification. The caller assumes the line is dead. The business assumes nobody called.

The culprit is almost always a misconfigured calling policy or a voicemail routing rule that was never set up correctly after migrating from a legacy phone system. Teams handles voicemail differently than traditional PBX, and most setup guides skip right past it.

2. Direct Routing that "works" but shouldn't

Direct Routing lets you connect Teams to your own SIP trunk or carrier — but when it's configured by someone who set it up once and moved on, you often end up with a setup that functions well enough day-to-day until something breaks and nobody knows where to look. Dial plans with gaps, SBC rules that don't match your number ranges, emergency calling that isn't properly routed. It works until it really doesn't.

3. Remote workers who can't make or receive calls reliably

This one costs businesses real money. A remote employee whose Teams calls drop, echo, or fail to connect isn't a network problem — it's usually a Teams client policy, a codec negotiation issue, or a bandwidth allocation setting that was never tuned for off-network users. The fix is rarely complicated. It's just never looked at.

If any of these sound familiar, a 45-minute Health Check is probably worth your time. I'll review your setup live, tell you exactly what's misconfigured, and hand you a written action list the next day — $150 flat, no retainer.

DM me to book.