4. Telecommunications
  5. Radiotelephone system
  6. Emergency or alarm communication

Yinjun Zhu

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Ancillary data support in session initiation protocol (SIP)...

Multiplex communications – Pathfinding or routing – Switching a message which includes an address header
Reexamination Certificate

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Solutions for voice over internet protocol (VoIP) 911...

Telecommunications – Radiotelephone system – Emergency or alarm communication
Reexamination Certificate

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Solutions for voice over internet protocol (VoIP) 911...

Telephonic communications – Emergency or alarm communications – Central office responsive to emergency call or alarm
Reexamination Certificate

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User plane location based service using message tunneling to...

Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate

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Profile ID: LFUS-PAI-P-2232547

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