Sales team to push hard but that they job, But using new bt cloud voice just don't. if we pick up a call from different lines no way to see who called. the system is not very user-friendly and cannot be changed and we just told tough. We lost a lot of functions from our old Avaya system we still after 9 months can not our billing sorted even after a month of call e-mail and complaints bt just do not care at all about use. Just say away from bt. the system work to make call and click dail. we have 60 lines using Yealink. do not think I be using BT again after 15 years then never change.