How to Evaluate a Telecommunications Company Before You Get VoIP

TL;DR – Summarise this page with AI

Switching to VoIP is one of those decisions that looks simple from the outside – pick a provider, port the number, done – until the first hidden fee shows up on an invoice, or a “99.9% uptime” guarantee turns out to mean nearly nine hours of downtime a year buried in the fine print. Evaluating a telecommunications company properly, before signing anything, means checking a specific set of things in a specific order: pricing transparency, reliability guarantees, porting logistics, feature completeness, integration depth, network readiness, and what real customers say once the sales call is over. This guide walks through exactly what to check and why it matters, covers the migration process most buyers only discover after they’ve already signed, and then applies every evaluation point to Nuacom using nothing but what’s published on nuacom.com – so you can see what a fully transparent answer actually looks like, not just a checklist in the abstract.

Why the Evaluation Step Matters More With VoIP Than With a Landline

A traditional landline contract is mostly one variable: the monthly line rental. A VoIP contract has far more moving parts – per-user pricing, feature tiers, add-on costs, contract length, network requirements, and a reliability guarantee that determines whether your business can even make calls during an outage. That complexity is exactly why more businesses are making the switch and exactly why more of them get burned skipping the evaluation step: over 45% of companies now use unified communications as their primary business communication platform, up from less than 12% just eight years ago, and businesses that switch report a 40-60% reduction in monthly communication costs on average versus traditional landlines. Those are real, meaningful gains – but they’re the average outcome for businesses that evaluated properly, not a guarantee for anyone who signs the first contract offered.

Get the evaluation wrong and the fallout isn’t abstract: taxes and regulatory fees alone can add 15-25% on top of the advertised price, number porting fees typically run $5-$40 per number, and a single hour of unplanned downtime can cost more than a full year of service fees for a business that depends on inbound calls to generate revenue. None of that shows up on a homepage – it shows up after you’ve signed, which is exactly why the evaluation has to happen before the contract, not after the first bad invoice.

The 6-Point Framework for Evaluating a Telecommunications Company

1. Published, transparent pricing

Can you find real per-user pricing without submitting an email and waiting for a callback? A provider confident in its pricing publishes it. One that doesn’t is often building room to quote differently depending on who’s asking – which isn’t automatically a scam, but it does mean you lose the ability to comparison-shop quickly, and it puts you at a disadvantage walking into a sales call without a public number to anchor against.

Beyond the headline figure, check whether the quoted price is per user or per line (these can differ significantly for a business with shared lines), whether there’s a minimum user count that changes the effective price for a small team, and whether the annual-versus-monthly discount is clearly stated rather than something you have to ask about directly.

2. Uptime SLA – and what it actually means in hours

A “99.9% uptime” guarantee sounds close to a “99.999%” one, but the difference is enormous: 99.9% allows for roughly 8-9 hours of downtime a year, while 99.999% (“five nines”) allows for only about 5 minutes. Ask for the specific number, not just the marketing phrase, and ask what happens – credits, refunds, escalation – if the provider misses it.

It’s also worth asking what sits behind that number: does the provider use multiple geographically distributed data centers, or a single point of failure? A high uptime percentage backed by redundant infrastructure and failover routing is a very different guarantee than the same number backed by a single server rack, even if the marketing page reads identically.

3. Number porting logistics

Confirm three things specifically: whether porting your existing number causes any service interruption, the realistic timeline (industry-standard is roughly 7-14 business days, though this varies by provider), and what the fallback plan is if a port runs long. A vague answer here is a red flag before you’ve even signed up.

Also confirm the porting fee upfront (some providers waive it, some charge per number) and, critically, don’t cancel your existing service until the new provider confirms the port is fully complete – porting delays are common enough that keeping the old line active as a safety net for a few extra days is standard, sensible practice, not overcaution.

4. What’s actually included at the entry tier

List every feature your business genuinely needs – auto-attendant, call recording, analytics, mobile app, SMS – and check which of those are standard versus paid add-ons at the entry price point. Two providers quoting the same headline price can differ by 30-40% in real cost once add-ons are factored in.

Pay particular attention to call recording retention windows (30 days versus 6 months versus multi-year options can matter a lot for compliance-sensitive industries), whether SMS is bundled or billed per message, and whether basic analytics/reporting is included or reserved for a higher tier – this is one of the most common places pricing pages quietly narrow what “included” actually means.

5. Integration depth with what you already run

A phone system that doesn’t talk to your CRM or helpdesk creates manual work that scales with every call your business takes. Check the specific, current integration list – not a logo wall with no detail behind it – against the tools your team actually uses daily.

Ask what each integration actually does, too: does it just log the call, or does it also push caller ID screen pops with contact history, sync call recordings and transcripts, and support click-to-call? “We integrate with Salesforce” can mean anything from a basic webhook to a deep, bidirectional sync – the difference matters enormously in daily use.

6. Review consistency across independent platforms

Check G2, Capterra, Trustpilot, and Google separately rather than relying on testimonials curated on the provider’s own site. A provider with consistently strong scores across all four is a much stronger signal than one with a single glowing quote and no independently verifiable pattern behind it.

Read the sub-scores where platforms provide them, too – G2 in particular breaks ratings down into categories like Ease of Setup, Quality of Support, and Ease of Doing Business. A provider that’s strong on “features” but weak on “support” is telling you something specific about what the actual day-to-day experience will be like once you’re a paying customer rather than a prospect.

The VoIP Migration Timeline: What Actually Happens After You Sign

Evaluation doesn’t end at contract signature – what happens during the actual switch determines whether your business experiences a clean cutover or a week of dropped calls and confused customers. Most small business VoIP migrations take somewhere between 60 and 90 days from initial planning to go-live, though the actual installation and staff training on cutover day typically takes a single day, and simple, single-location setups can go live in under a week. The process generally breaks down into five stages:

• Planning and assessment: Document every phone number currently in use – main lines, direct dials, toll-free numbers, fax lines – and map your current call flow: how calls route today, what ring groups exist, and what your auto-attendant menus currently say, so nothing gets lost in translation to the new system.
• Network preparation: Confirm your internet connection has enough clean bandwidth (see the network readiness section below) and that your router/firewall configuration won’t interfere with call traffic.
• Number porting: Submit the port request early, since landline ports in particular can take 7-14 business days, and keep the old service active until the port is confirmed complete rather than cancelling preemptively.
• Communication and training: Tell your team the timeline before it happens – at minimum, one message announcing the change and training schedule, and a second closer to cutover with specific details and who to contact if something breaks.
• Go-live and monitoring: Watch call quality closely for the first 48 hours after cutover and report any issues immediately rather than assuming they’ll self-resolve – early issues are usually configuration problems that are quick to fix if caught early, and much harder to diagnose after they’ve become “normal.”

Network Readiness: The Check Most Buyers Skip

None of the above matters if the office internet connection can’t reliably support VoIP traffic – and this is the evaluation step most businesses skip entirely, only to discover the problem in the form of choppy calls after go-live. VoIP is far more sensitive to connection quality than to raw speed, and four specific numbers determine whether call quality will actually be good:

• Bandwidth: A single VoIP call needs roughly 100 Kbps. A busy office running five simultaneous calls should have a minimum of 5-10 Mbps of clean, stable bandwidth dedicated to voice traffic, not just whatever’s left over after everything else on the network.
• Latency: Under 100-150ms is ideal for a natural-feeling conversation. 150-300ms introduces a noticeable delay that’s tolerable for low-stakes internal calls but not recommended for customer-facing ones. Above 300ms disrupts conversation flow badly enough that callers will talk over each other.
• Jitter: Should stay below 30ms, with under 20ms delivering the best quality. Jitter above that threshold overwhelms the receiving system’s buffer and causes audio to break up.
• Packet loss: Keep it below 0.5%. Even a 1% packet loss rate is enough to create audibly choppy audio and dropped words mid-sentence.

Ask a prospective provider whether they’ll run a network readiness check as part of onboarding, and if quality issues come up after go-live, ask them to walk through these four numbers specifically rather than accepting “it’s probably your Wi-Fi” as a full diagnosis.

Red Flags That Should End the Conversation

Beyond what to check, it’s worth knowing what should make you walk away entirely. None of these are automatically disqualifying in isolation, but two or more together are a strong signal to keep looking:

• Pricing only available after a sales call, with no published starting figure anywhere on the site.
• Vague or evasive answers about uptime – a specific percentage with a stated remedy for missing it, versus a general “we’re very reliable.”
• No clear answer on porting timeline or whether service will be interrupted during the switch.
• A required annual or multi-year contract with no month-to-month option at any tier, especially for a business that’s never used the provider before.
• Reviews that exist almost entirely on the provider’s own website, with no independently verifiable presence on G2, Capterra, or Trustpilot.
• An integrations page that lists logos with no detail on what each integration actually does.

Applying the Framework: Nuacom as a Worked Example

Rather than leaving this abstract, here’s what the six-point framework looks like applied to a real provider, using only what’s published on nuacom.com.

1. Published pricing

Nuacom’s pricing page lists exact figures with no email gate. The Unlimited plan runs €19/user/month billed annually or €25/user/month billed monthly, with a 4-user minimum. The Enterprise plan runs €25/user/month annually or €35/user/month monthly, with a 2-user minimum. Pricing localizes by visitor region, so confirm your exact local rate at checkout.

2. Uptime SLA

Nuacom advertises a 99.999% (“five nines”) uptime guarantee – the tier that translates to roughly five minutes of downtime a year rather than the several hours implied by a 99.9% guarantee. Worth confirming the current figure and any associated service credit policy directly with Nuacom’s sales team before signing, since uptime commitments can be tiered by plan.

3. Number porting

Nuacom supports porting existing numbers from a previous provider, with a typical timeline in the range of 2-10 business days and a one-time porting charge per number. Confirm the exact fee and timeline for your specific number(s) before committing to a switch date.

4. Entry-tier feature completeness

The Unlimited plan includes unlimited calling to 30+ countries, 2-way Business SMS and SMS campaigns, Call Recording (6 months standard), IVR, Auto Attendant, and Call Analytics as standard – not gated behind an upgrade. The Enterprise plan adds Live Call Monitoring, a real-time Wallboard, and Auto Dialer.

5. Integration depth

Documented, current integrations include HubSpot, Salesforce, Zoho, Pipedrive, Slack, Zapier, and n8n, among 100+ total listed on Nuacom’s integrations page.

6. Cross-platform review consistency

Per Nuacom’s own reviews page, which aggregates independent third-party scores: 4.9/5 on G2, 4.8/5 on Capterra, 4.8/5 on GetApp, and 4.9/5 on Google. G2’s satisfaction sub-scores show 98% for Quality of Support and 94% for Ease of Setup – consistent across platforms rather than strong on one and weak on another.

Contract flexibility (the filter question)

Both Nuacom plans run on a 30-day rolling contract as standard, with an annual option available for a discount rather than required upfront.

Device support and network readiness

Nuacom credentials can be configured across up to three separate devices per user – desktop app, mobile app, and a physical IP phone – covering the office-desk, remote-work, and on-the-go scenarios a growing team actually needs without paying for separate systems for each.

Security and compliance

Nuacom’s published materials reference ISO 27001 certification for data security. For any business in a regulated industry (healthcare, legal, financial services), confirm the current certification status and ask specifically what it covers – data encryption in transit and at rest, access controls, and incident response procedures – directly with Nuacom’s sales team before relying on it for compliance purposes.

A Quick Reference: Questions to Ask Any Provider Before You Sign

Organized by category, these are the specific questions that get past marketing language and into answers you can actually verify:

Pricing and contract questions

• What is the exact per-user price, and what’s included at that price versus billed as an add-on?
• Is that price per user or per line, and is there a minimum user count?
• What’s your standard contract length, and can I move to month-to-month if I need to?
• What happens to my rate if I need to add or remove users mid-contract?

Reliability and technical questions

• What uptime SLA do you guarantee, in a specific percentage, and what happens if you miss it?
• Do you operate from multiple, geographically redundant data centers?
• Will you run a network readiness check (bandwidth, latency, jitter, packet loss) before go-live?
• What’s your process if call quality issues come up after we’re live?

Migration and porting questions

• How long does number porting take, and is there any risk of service interruption during the switch?
• What’s the realistic end-to-end timeline from signing to go-live for a business our size?
• What happens if a port takes longer than expected – do we keep our old service active as a fallback?

Feature and integration questions

• Which specific CRM, helpdesk, or collaboration tools do you integrate with today – not “we support most platforms,” but a named list?
• For our specific CRM, does the integration just log calls, or does it also support screen pops, click-to-call, and recording sync?
• What’s included at the entry tier versus reserved for a higher plan?

Trust and support questions

• Can I see your current ratings on G2, Capterra, and Trustpilot, not just testimonials curated on your own site?
• What are your support hours, and what channels (phone, chat, email) are available?
• What does onboarding actually look like, day by day, for a business our size?

4.9/5 stars

4.8/5 stars

4.8/5 stars

Frequently Asked Questions