Invention Grant
- Patent Title: Method for providing voice service to roaming wireless users
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Application No.: US17082928Application Date: 2020-10-28
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Publication No.: US11588862B2Publication Date: 2023-02-21
- Inventor: Mario Manuel Jardon , Cameron Dunn
- Applicant: AT&T Intellectual Property I, L.P. , AT&T Mobility II LLC
- Applicant Address: US GA Atlanta; US GA Atlanta
- Assignee: AT&T Intellectual Property I, L.P.,AT&T Mobility II LLC
- Current Assignee: AT&T Intellectual Property I, L.P.,AT&T Mobility II LLC
- Current Assignee Address: US GA Atlanta; US GA Atlanta
- Agency: Guntin & Gust, PLC
- Agent Kenneth Kwan
- Main IPC: H04L65/1016
- IPC: H04L65/1016 ; H04W8/12 ; H04L65/1073 ; H04W4/14 ; H04L61/4511 ; H04L65/1104

Abstract:
Aspects of the subject disclosure may include, for example, a method in which a processing system authenticates a communication device roaming from a home network that does not support Voice over Long Term Evolution (VoLTE) roaming, and in which the processing system communicates with a packet gateway (PGW) of an evolved packet core (EPC) separate from the processing system, to facilitate communication between the communication device and a subsystem of the EPC; the subsystem emulates the home network to provide a VoLTE roaming service to the communication device. The communication device also engages in a session initiation protocol (SIP) with the subsystem to initiate a communication session with the subsystem; in accordance with the communication session, the subsystem provides the VoLTE roaming service to the communication device. Other embodiments are disclosed.
Public/Granted literature
- US20220131909A1 METHOD FOR PROVIDING VOICE SERVICE TO ROAMING WIRELESS USERS Public/Granted day:2022-04-28
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