ZeroCall

ZeroCall is Modern Virtual Cloud Phone System for the Business. Business will be able to purchase international mobile/Toll free/Local number (more than 70 Countries) from ZeroCall and will be able to deliver voice communications and multimedia sessions over Internet Protocol networks.
Krispcall can let you and your team

a) Meet your contacts anywhere they are,
b) Work together with your team

ZeroCall allows you to forward the calls, record calls, customize working hours and set welcome message, voicemail, IVR & more.
User can also assign one number to multiple users. This will allow you to ring the phone of all the users simultaneously.

Admin can add team members to ZeroCall account on the settings button.
In the user's setting page, you can set forward to device, custom availability & assign numbers to a user.