The traditional phone system is located on the premises of the business and consists of physical phone extensions that are bulky, inflexible and inconvenient to handle. They are costly and time-consuming to maintain. They also cannot be used through a mobile phone from anywhere.
Cloud telephony is built, operated and maintained on the cloud, using the internet to connect the network.
1) It eliminates fixed devices and wires. Your agents can make calls using their mobile or landline devices.
2) It allows your agents to make calls remotely, from anywhere in the world.
3) It saves on infrastructure costs, eliminating capex.
4) It is maintained by the service provider, like Exotel, upgraded constantly, without you investing in maintenance/upgrade.