8x8 X Series a good VoIP system

8x8 replaced a legacy Avaya system in our organization. One of the biggest issues we were facing at the time was the inability for employees to answer calls when they were not in the office. 8x8 solves this by allowing any device to be a phone. The 8x8 Work app for your computer or smart phone works as advertised and now users can receive work calls where ever they are. As a phone system it does the job. There are some limitations which is why I don't give it a 10 out of 10. Unless otherwise specified the total number of voice mails any user can have is 20 out of the box. If you need to integrate to a paging system, do you homework first, they are very limited in the systems they can natively integrate with. You cannot setup a global fax cover sheet if you plan to use eFaxing. You have to use their cover sheet or each user must add one individually. Call filtering for Spam and Robocalls is non existent. Be prepared to start receiving a lot more unwanted spam and Robocalls. Overall the system does what it needs to do even with the issues mentioned here it's a good system.