Tools · 7 min read

Choosing a business phone system for a solo owner.

VoIP, cell-only, virtual numbers, traditional landline — too many options and most are over-engineered. Here's what's right for a solo business owner by use case.

Quick answer

Most solo owners do best with a virtual phone number (RingCentral, OpenPhone, Google Voice) layered over their personal cell — gives a separate business number with auto-attendant and routing without a second phone. Add a routing layer (OutOfOfficePro) for after-hours self-serve dispatch. Skip traditional landlines (rarely worth it) and full VoIP systems (overkill until you have 3+ employees).

→ The mechanical fix

OutOfOfficePro layers on top of any phone system.

Routing URL works whether you use OpenPhone, Google Voice, or just your cell.

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The four options

Cell phone only

Cheapest. Single number for personal and business. Hard to enforce work-life boundaries. Best for: very early stage solo, side hustles.

Virtual business number (OpenPhone, RingCentral, Google Voice)

Separate business number. Auto-attendant, voicemail transcription, basic routing. Layered on cell phone (no second phone needed). $10-$30/month. Best for: most solo owners.

Full VoIP system

Multi-line, multi-extension, conferencing. $20-$60/user/month. Best for: 3+ employees with shared phone needs.

Traditional landline

$30-$80/month. Increasingly obsolete. Best for: niche use cases (alarm system requirements, fax, specific elderly customer base).

Specific recommendations

Solo trades (plumbing, HVAC, electrical)

OpenPhone or RingCentral with after-hours auto-attendant routing to OutOfOfficePro URL or covering tech.

Solo professional services (legal, accounting, consulting)

RingCentral or OpenPhone with formal voicemail and OOO auto-attendant during vacation.

Solo creative (designer, copywriter, photographer)

Google Voice (free) is often sufficient. Pair with email-first communication.

Property managers

OpenPhone for primary contact + OutOfOfficePro for after-hours emergency routing.

What the routing layer adds

A virtual business number handles inbound calls and voicemail. A routing layer (OutOfOfficePro) handles WHAT HAPPENS NEXT — caller picks the issue, gets routed to the right vendor or covering professional, and the loop closes without you.

The two are complementary: phone system for receiving calls, routing for dispatching them.

// Layers on anything

Phone system + routing = full coverage.

Use any phone system; layer routing on top. 14 days free.

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