How to choose the right VoIP phone system in 2026
A practical buyer's checklist covering features, connectivity, integrations and total cost before you switch.
By the Telappliant team
With PSTN switch-off complete by January 2027 and most providers now cloud-only, the choice is no longer whether to move to VoIP, it is which platform actually fits how your business operates. Here is a practical way to compare them.
Start with call patterns, not features
Map how calls actually flow: how many concurrent calls at peak, which teams need queues, who works remotely, and whether you need multiple sites or numbers unified on one system. A feature list means nothing until it is matched against your real call volumes.
Core features worth checking
- Call queueing, hunt groups and overflow rules that match your team structure
- Mobile and softphone apps that give remote staff the same number and features as the office
- Integration with your CRM or helpdesk so calls log automatically
- Call recording and reporting suitable for your compliance needs
- Microsoft Teams integration if your business already lives in Teams
Connectivity comes first
A cloud phone system is only as reliable as the internet connection carrying it. Check fibre availability at every site, ask whether the provider offers Quality of Service prioritisation for voice traffic, and consider a failover connection for any location where a dropped call is a real business problem.
Questions to ask any provider
- What is the guaranteed uptime and what happens to calls during an outage?
- How is porting of existing numbers handled, and what is the realistic timeline?
- Is pricing per user, per line, or bundled, and what happens as you scale up or down?
- What support is included, and is it UK-based with a defined response time?
- Can we trial it with a small group before committing the whole business?
Avoiding the common mistake
The most frequent regret is choosing purely on price per seat and discovering later that call queueing, reporting or CRM integration cost extra or were not available at all. Get the full feature and cost picture in writing before signing, not after the invoice arrives.
