Teams telephony system experience

Hi,

To start with don't see Teams as just another PBX, it is not, it is a collaboration platform. If you start with comparing functions that you have in Cisco with Teams telephony you might see some features that you won't get in Teams but consider if you really need them. Moving telephony from an traditional PBX to Teams (or Skype for Business) should not be an 1:1 migration, it will be partly a new way of working.

As with Skype for Business you won't get all features that you maybe need in Teams, therefore you have to rely on Microsoft partners to create software for special needs. Example compliance recording of calls, call center functions or attendant applications. Currently there is no real support for these third-party applications since there is no APIs for them to use in Teams, this will come soon (early 2020 I think).