WIth on-premise telephony, you pay for a dedicated line between you and the person you are calling. If you have multiple staff you pay multiple lines. The on-premise solution is more dedicated but is way more expensive.
On-premise provides control over a communication infrastructure. Exploiting on-premise resources, such as virtual servers, allows you to install a secure full control solution, reducing costs and providing reassurance that all of your company data is secure within your organization. On-premise provides flexibility with our solutions, coupled with resilience and high availability.