Please note that this device is not configured to operate with either bt cloud voice andor bt cloud phone services for further information on how to order the correct device for these services please contact the respective helpdesks bt cloud voice 0800 3890537 and bt cloud phone 0800 389 0598 yealink w52p is a sip cordless phone system designed for small business and soho who are looking for immediate cost saving but scalable sip based mobile communications system combining the