IVR and Mobile Solutions

Premise-based PBX (Traditional PBX) is usually employed inside an office or building.
It is usually a single piece of hardware that has multiple incoming phone lines shared across a higher number of extensions.
Calls are answered by the PBX equipment, and then routed to a specific phone through hardwired lines inside the office.
Sending a call outside the office to someone telecommuting or working elsewhere is often impossible, and always results in additional costs.
High upfront costs to setup the hardware and software.
High maintenance costs
Typically no costs for calls within the group.

A Virtual PBX service has a different set of advantages. A hosted system is maintained by the service provider, in this case Toff Management so there is no hardware or software for the client to pay for or support.
Calls are routed from the hosted PBX to extension owners through the public telephone network. Each person that wants to receive calls is provided with a working phone, so there is no sharing of phone lines between extensions, which can be mobile or fixed.
Calls can easily be routed to anyone, at any phone, in any location.
No premise-based hardware is required for the virtual PBX service.
Very low upfront costs.
Calls within the group are fixed through a monthly line rental or subscription.