Free comparison tool · Updated 19 October 2026

Build your business VoIP requirements brief

Answer eight short questions to create a provider-neutral specification you can print or send to suppliers. It covers the details that are easy to miss when comparing headline monthly prices.

Your answers stay in this browser. The tool does not send or save names, telephone numbers, costs or configuration details. Do not enter account credentials or security information.

1. How many people need their own phone service?

Just me 2–5 people 6–10 people More than 10

2. What is the busiest number of calls you need at the same time?

Count incoming and outgoing calls, including callers waiting in a queue.

Concurrent calls

3. Where will people work?

One workplace Several sites Home, mobile or hybrid

4. Which devices should make and receive business calls?

Choose every device type that must be supported.

Desk phones Mobile app Computer or headset Existing analogue handset

5. What must happen to existing numbers?

New number is fine Keep one number Keep several numbers or a DDI range

6. How should incoming calls be handled?

Choose only features you expect staff to use.

Ring several people together Queue or hunt group Press-one phone menu Business-hours routing Voicemail sent by email Missed-call notifications

7. Must calls continue during a broadband or power failure?

Yes No Not sure

8. Does the old line support anything besides ordinary phone calls?

For example an alarm, lift, fax, card terminal, door entry, PBX or broadband.

Yes No Not sure

Why write the brief before requesting quotes?

Providers package users, numbers, call capacity, equipment and call handling differently. A like-for-like brief makes it easier to expose omitted licences, porting work, hardware and support rather than relying on a headline price.

Ofcom says small-business customers with ten employees or fewer should receive a written contract summary before agreeing a service, including key charges, contract length and cancellation information. Its rules also cover switching and number portability. Eligibility and protections vary with business size and the service, so confirm how they apply.

A service to include in your comparison

Advertisement · Clear Comms receives 15% of charges from customers referred to SOHO66. Compare the generated requirements, resilience, contract terms and total cost with SOHO66 and other providers before buying.

View SOHO66 business phone options

Primary sources

Ofcom: General Conditions that protect business customers.
Ofcom: Contracts, including written summaries for small businesses.
Ofcom: Number portability.
GOV.UK: Telecommunications Modernisation Connectivity Timeline, including the 31 January 2027 Openreach PSTN migration date.
BT Business: Auto attendants and call queues, an example of provider-specific call-handling configuration.

General information only. The generated brief cannot confirm service availability, equipment compatibility, number portability or legal rights for a particular organisation.