EMERGENCY CALL SUPPORT FOR VoLTE ROAMING WITHIN S8 HOME ROUTING ARCHITECTURE

摘要

A method, a device, and a non-transitory storage medium having instructions are provided to receive an attach request from a wireless device to attach to the device; obtain a mobile telephone number of the wireless device from another device of a home wireless network of the wireless device, based on the attach request; receive subsequent to an attachment of the wireless device, a request to establish an unauthenticated Voice over Long Term Evolution (VoLTE) emergency call, wherein the wireless device is not registered with a visited Internet Protocol Multimedia Subsystem and the visited IMS is not communicatively coupled to a home IMS of the wireless device; and provide during an establishment of the unauthenticated VoLTE emergency call, the mobile telephone number to a public access safety point.