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Call-Through (Direct Inward System Access - DISA)

This feature is designed for companies who want to reduce the local and national interconnection charges involved in making calls to the Office and networked locations.

The basic idea behind this solution is enabling authorized corporate users outside the office to call a pre-allocated telephone (DDI) number for obtaining an announcement from within the organization's Telephone system in order to make calls to the college’s in the office or in an other location that is part of there telephony network. As a result, the company saves costs.