Review internet connectivity
VoIP depends on a stable internet connection. Assess real upload and download performance, latency, packet loss and peak-time usage at every location.
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How to Prepare a Business Network for VoIP
A practical UK business guide to internet connectivity, bandwidth, QoS, resilience and security for reliable VoIP calls.
Allow sufficient bandwidth
Each concurrent call uses network capacity. Plan for expected call volume as well as video meetings, cloud applications and other traffic sharing the connection.
Configure Quality of Service
QoS can prioritise voice traffic over less time-sensitive data. Correct router and network configuration helps reduce delay, jitter and broken audio.
Plan power and connection resilience
Consider backup internet connectivity and power for routers, switches and handsets. Cloud call-routing rules can provide another destination during a local outage.
Use suitable hardware and security
Choose compatible SIP phones, switches, routers and firewalls. Keep software updated and protect credentials, management access and signalling appropriately.
Test before migration
Run call-quality tests under realistic network load, confirm emergency and outbound calling arrangements, and document fallback procedures before moving all users.
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