Also called Hosted Telephony, Centrex or IP Centrex. It is a VoIP solution which refers to a telephone installation hosted by the operator rather than by the customer.
This solution allows companies to outsource voice over an IP network and free themselves from having to manage a PBX.
A company using Cloud telephony equips its site with a router connected to an xDSL connection and IP phones. Therefore, the local network must be compatible with IP telephony. An audit is preferable prior to the implementation of hosted telephony.
In addition to the technological advantages, hosted telephony allows for a reduction in investment (no more PABX) and communication costs (more distance-related costs, as most offers are flat-rate). In general, Cloud Telephony allows for a better control of telephony. Previously reserved for large companies, hosted telephony is now available to VSEs and SMEs.