Robuta

https://www.information-age.com/avaya-cloud-office-launched-in-the-uk-alongside-ringcentral-16277/
Avaya and RingCentral have announced the UK launch of Avaya Cloud Office, to allow for unified communications across multiple devices
avaya cloud officelaunchedukringcentral
https://www.avaya.com/en/uk/products/cloud-office/global-office/
Avaya expands the robust cloud PBX calling capabilities of Avaya Cloud Office to over 40 countries so customers can provide consistent communications...
avaya cloud officeglobaluk