December 12, 2005
VoIP deployment
VoIP deployment requires changes in the existing network in order to make it capable of handling real-time traffic. This also calls for a thorough pre-deployment assessment of the network. According to Gartner, around 85% of the existing networks are not geared for handling VoIP transmissions and three fourths of the companies that do not carry out a predeployment analysis of their IP network infrastructure are bound to falter with the actual deployment.
In order to prevent seen and unseen problems from hampering a VoIP deployment, it is important that companies execute necessary changes such as replacing LAN/WAN links, including PoE for the network switches, etc. Predeployment assessment tools such as AppareNet Voice can help in assessing problems with the NIC drivers such as full- and half-duplex conflicts. Rate-limiting queues and latency can lead to packet loss and degradation of voice quality. Faulty media and incorrect media deployment such as incorrect cabling and imperfect optic ends, electromagnetic interference, etc can lead to variable jitter. eweek.com reports:
"You'll see call-quality issues there first," said Kurt Wright, senior network engineer at IPC. Engineers execute tests that measure bandwidth utilization, packet loss, round-trip time, latency and packet reordering. They also look at mean Opinion scores, which measure call quality.
Read More: Dodging VOIP Predeployment Pitfalls
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