Multi-level call forwarding to teams (Call Cascading)

Business Problem

Currently, the system only allows call forwarding to individual phone numbers and encounters technical limitations with multiple forwards. In the hotel industry, availability is crucial, but since front-office staff often assist guests in person at the same time, the rigid system leads to missed calls and thus lost bookings.

Desired Outcome

A cascaded call forwarding system that targets entire teams instead of just individual numbers. The process should be flexibly configurable: If Team A doesn't answer, the call is forwarded to Team B, and if they are also busy, to Team C, before the call is finally transferred to voicemail or a recorded message.