Here's the most important checklist if you are seriously considering a VoIP services. Do not be regret after signing up, it might be a costly mistake. Have a head up now and feel free to add in as well if you feel appropriate.
1
VoIP Speed Testing
Most important criteria for a good quality call from VoIP service is the network speed that you are using. This VoIP speed tool can help to determine if your ISP speed are up to the requirement.
Nothing beats a good customer service once you really need helps. A helpful customer support is also the main criteria in picking a good VoIP service.
4
Add On Features
You are paying for the call service using your existing networking. If there's additional add-on or features that are bundle together with your VoIP plan, that's surely a bonus and might eventually be productive to you.
5
Get a Free Trial & Do Not Sign in Long Contract Term
If possible, get a free trial and try out yourself in the first hand. If that is not possible, pay monthly and do not hook into cheaper price by bonding into long term contract.