Phone Power



Pros -  With 45 features, you're sure to have all the essential telephone options you'd expect to find in a VoIP service. 
 Cons -  Phone Power doesn't have unlimited calling or unlimited extensions. Additionally, it lacks some of the advanced features that some of our top-ranked services offer.
 The Verdict -  6.7/10This service has some limits on talk time and usage. It doesn't have as many advanced features as some of the best business VoIP services; however, Phone Power does have 45 basic features.

Nextiva

Pros -  This no-contract, no-activation-fee business VoIP service is flexible to work with. It has three server locations and a fully redundant network.
 Cons -   If you need more than 10 extensions, there's an additional fee. This company doesn't give a service level agreement.
The Verdict -  7.38/10If you don't mind paying extra to have a call queue and you want a business VoIP provider that enables you to remain flexible by having no contract, this may be a good service for your company.

Vocalocity

Pros -  Vocalocity doesn't require you to sign a contract. It provides Microsoft Outlook and LinkedIn integration to make it easier for you to contact your clients and associates. 
Cons -  This company doesn't provide a service level agreement that guarantees how reliable its service will be. It also only has a basic queuing feature that unevenly distributes the incoming-call load disproportionately to those who are at the beginning of the list.
The Verdict - 7.73/10This business VoIP service doesn't share information about its network reliability. However, it doesn't require you to have a contract, so if it doesn't meet your needs, switching providers shouldn't be too much of a problem.