Chose Zendesk Talk
Zendesk Talk has many of the features as the other phone systems I have used. My only reservation is their lack of focus on a feature that will allow their clients to remain PCI compliant.
Independently Invited by TrustRadius
A de minimis incentive was given to thank the reviewer for their time. The incentive was not used to bias or drive a particular response, nor was the incentive contingent on a positive endorsement. More Info