How to Evaluate a VoIP Provider in 30 Minutes — The Procurement Checklist

I have sat in on over 100 VoIP vendor evaluations. Most companies spend weeks going back and forth with sales reps, scheduling demos, and comparing feature matrices. You can get 90% of the information you need in 30 minutes if you know what to ask.

Here is the exact checklist I give procurement teams.

Minutes 1-5: Pricing Reality Check

Do not let the sales rep control the pricing conversation. Ask these three questions immediately:

1. "What is the per-user monthly price for our headcount at your standard tier — not a promotional rate?"
2. "What features cost extra? Specifically: call recording, auto-attendant, video, analytics."
3. "What does the contract look like? Monthly, annual, multi-year? What is the cancellation process?"

Benchmark pricing (2026):

Minutes 5-10: Technical Infrastructure

Ask the technical team, not the sales rep:

1. "How many data centers do you operate, and where?"
2. "What is your measured uptime — not SLA target — over the past 12 months?"
3. "Do you support Opus codec?"
4. "Do you use direct media paths or relay all audio through your servers?"

Minutes 10-15: Integration and Migration

1. "Which CRMs do you natively integrate with?"
2. "How do you handle number porting? What is the typical timeline?"
3. "Do you provide temporary numbers during migration?"
4. "Who manages the porting process — us or you?"

The porting question is critical. If they say "you submit a port request through our portal," that means you are on your own. If they say "we assign a porting specialist who manages the entire process," they have done this before.

Minutes 15-20: Support Quality

1. "If I call support at 2 AM on a Saturday because calls are dropping, what happens?"
2. "What is your average ticket resolution time for service-affecting issues?"
3. "Will I have a dedicated account manager or go to a general queue?"
4. "Can I talk to a current customer reference in my industry?"

Then actually test it: call their support number right now during the evaluation. Time how long it takes to reach a human. Ask a technical question. Rate the experience.

Minutes 20-25: Security and Compliance

1. "Do you have a current SOC 2 Type II report?"
2. "Is call encryption (TLS + SRTP) mandatory or optional?"
3. "Will you sign a BAA?" (if healthcare)
4. "Where are call recordings stored, and who can access them?"

If they cannot produce a SOC 2 report within 24 hours, they either do not have one or it is expired. Both are problems.

Minutes 25-30: The Deal-Breaker Questions

1. "What happens to my data if I leave? Can I export all recordings and CDRs?"
2. "What changed in your last price increase?"
3. "What is the biggest complaint your current customers have?"

That last question catches most sales reps off guard. An honest answer like "our mobile app needs improvement, and we are working on it" builds trust. A deflection like "our customers love everything" is a lie.

Scoring

Any provider scoring below 3.5 overall should not make your shortlist.

providers such as VestaCall (https://vestacall.com) with month-to-month contracts scores well on this checklist because they publish pricing publicly, support Opus codec, handle porting end-to-end, and provide their SOC 2 report on request.