Assess whether your network and infrastructure are ready for VoIP — bandwidth, QoS, switching, PoE, and security with a structured scoring system.
Deploying VoIP without proper infrastructure preparation leads to poor call quality, dropped calls, and user frustration. This readiness audit checklist helps you systematically assess every aspect of your network and infrastructure before migrating to VoIP. Covering bandwidth capacity, Quality of Service configuration, switch capabilities, Power over Ethernet readiness, security controls, and user environment, it identifies gaps that must be addressed before deployment.
IT managers, network administrators, and business owners preparing to deploy or migrate to a VoIP phone system who need to verify their infrastructure is ready.
Each concurrent VoIP call typically needs around 80 to 100 kbps of dedicated bandwidth depending on the codec used, so a 20-person office with 10 simultaneous calls needs roughly 1 Mbps reserved purely for voice traffic, on top of normal data usage, with headroom to avoid quality drops during peak periods.
Most modern desk phones need Power over Ethernet, so switches without sufficient PoE budget or ports typically need replacing or supplementing with PoE injectors. It is also worth confirming your switches support VLAN tagging, since separating voice and data traffic onto different VLANs is standard practice for call quality and security.
Jitter, latency above roughly 150ms, and packet loss above 1 percent are the main culprits behind choppy audio and dropped calls. Congested internet connections without QoS configuration, weak Wi-Fi for wireless handsets, and outdated routers unable to prioritise voice traffic are the most frequent underlying causes.
Yes, this checklist includes a structured scoring system across bandwidth, QoS, switching, security, and user environment so you get an overall readiness grade before committing to a VoIP deployment or migration date.
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