IP or TDM PBXs support direct connections to the public switched telephone network (PSTN) with no need for added conversion equipment. Telephone numbers, local, long-distance/national, toll-free/freephone, emergency services, and international calling capability. Flexible access options via Lumen® MPLS/IP VPN, Lumen® Dedicated Internet Access or bring your own bandwidth. The self-service portal helps you manage voice features and change requests. Built-in network diversity levels and configurations appropriate for your business. APIs Securely deploy Voice Complete services on any platform using the latest RESTful API technologies, including: Swagger/OpenAPI Specification 3.0 with downloadable YAML files. Synchronous and asynchronous response. Webhook/callbacks to receive real-time push notifications. Interactive "try me" functionality and test environments. Fast response times and microservices. Process transactions through your chosen systems and gain deep insight into your services.