VoIP did have a few disadvantages and problems associated with it, in comparison to traditional telephone service. Most of these have been solved/can be easily solved.
Just because the problems can be solved doesn't mean they aren't issues, though.
* VoIP doesn't work when the power is out
* VoIP doesn't have built-in 911
* VoIP can have network outages
* VoIP call quality problems
* VoIP and security
Tags: voip disadvantages problems service solved doesn't power built network
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