VoIP stands for Voice over Internet Protocol, and it means “voice transmitted over a computer network.” Don’t be fooled by the “Internet” part of the acronym. VoIP will run over any type of network. Currently, in the corporate sector the private dedicated network option is the preferred type.
Lets Make this Simple. VoIP is only as good as the network it resides on. Whether it is in the Cloud on or the VoIP Server is on Premise. There should be no short cuts when implementing any network systems, specially not a VoIP system. If you do, you are asking for problems. Voice transmission does not require large amounts of bandwidth, but it does require a high quality, stable, constant path to and from its destination.
Cloud Hosted is a viable, cost effective and provides a layer of redundancy if implemented correctly. Key factors to consider are current bandwidth speeds, current bandwidth usage (Mainly Upload) and router firewall. Best practice would have a dedicated or secondary internet connection for VoIP. We are starting to see more and more businesses introduce a second ISP for internet backup. This works extremely well for Cloud Hosted Phone Services.