Guide to Purchasing and Managing DIDs

This guide outlines the process of purchasing and managing Direct Inward Dialing (DID) numbers for businesses offering Voice over Internet Protocol (VoIP) services. It presents three main strategies for managing DIDs: purchasing as needed, maintaining a number warehouse, and using an API for real-time management. The purchasing as needed strategy is cost-effective but may involve longer provisioning times. The number warehouse strategy allows for quick provisioning but incurs overhead costs and requires effective inventory management. The API strategy combines elements of both, providing real-time provisioning with lower overhead, though it necessitates technical expertise and robust documentation. The guide emphasizes the importance of considering customer needs, staff expertise, and budget constraints when selecting the appropriate strategy for managing DIDs. It also highlights the necessity of a DID Inventory Management System (IMS) for effective inventory management, particularly for businesses with extensive coverage needs.