This paper describes how to implement Voice over IP (VoIP) applications on IP and DCS networks through Avaya Communication Manager administration. It is intended primarily for persons involved in planning, designing, or administering VoIP networks. In addition to VoIP applications, considerable information is provided as well on the design and administration of Distributed Communications System, Extended Trunk Access, Inter-PBX Attendant Service, Centralized Voice Mail and Japan TTC Q931-a.
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