Call authorization and billing message routing capability

Assignee

• AT&T

Inventors

• Xiang Li (784 patents)
• Min Liu (22 patents)
• John B. Reid (9 patents)
• Guy H. Starner (1 patents)
• Ashish Trivedi (13 patents)
• Peng Wang (50 patents)
• Yile Enoch Wang (8 patents)
• Jun Yang (38 patents)
• Lei Zhang (800 patents)
• Unknown

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