SYSTEM FOR INTER-COMMUNICATION BETWEEN LAND MOBILE RADIO AND PUSH-TO-TALK-OVER-CELLULAR SYSTEMS
First Claim
1. A system for providing communications services in a plurality of wireless networks, the system comprising:
- a network-to-network interface (NNI) gateway for inter-communications between a Push-to-Talk-over-Cellular (PoC) system in a first wireless network and a Land Mobile Radio (LMR) system in a second wireless network;
wherein the PoC system provides PoC call sessions for PoC mobile units in the first wireless network;
wherein the LMR system provides Push-to-Talk (PTT) call sessions for LMR subscriber units in the second wireless network; and
wherein the gateway bridges the LMR system to the PoC system such that the PoC system is exposed to the LMR system as an emulated LMR system and the LMR system is exposed to the PoC system as an emulated PoC system when a call is placed across the first wireless network and the second wireless network between the PoC mobile units and the LMR subscriber units.
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Accused Products
Abstract
A network-to-network interface (NNI) gateway for inter-communication between a Push-to-Talk-over-Cellular (PoC) system in a first wireless network and a Land Mobile Radio (LMR) system in a second wireless network. The PoC system performs a PoC call session for PoC mobile units in the first wireless network. The LMR system performs a Push-to-Talk (PTT) call session for LMR subscriber units in the second wireless network. Both the PoC and PIT call sessions comprise an instant two-way half-duplex voice call within a group of the PoC mobile units and/or LMR subscriber units. The gateway bridges the LMR system to the PoC system, such that the PoC system is exposed to the LMR system as an emulated LMR system, the LMR system is exposed to the PoC system as an emulated PoC system, and calls are placed across the first and second wireless networks between the PoC mobile units and LMR subscriber units.
48 Citations
30 Claims
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1. A system for providing communications services in a plurality of wireless networks, the system comprising:
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a network-to-network interface (NNI) gateway for inter-communications between a Push-to-Talk-over-Cellular (PoC) system in a first wireless network and a Land Mobile Radio (LMR) system in a second wireless network; wherein the PoC system provides PoC call sessions for PoC mobile units in the first wireless network; wherein the LMR system provides Push-to-Talk (PTT) call sessions for LMR subscriber units in the second wireless network; and wherein the gateway bridges the LMR system to the PoC system such that the PoC system is exposed to the LMR system as an emulated LMR system and the LMR system is exposed to the PoC system as an emulated PoC system when a call is placed across the first wireless network and the second wireless network between the PoC mobile units and the LMR subscriber units. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method for providing communications services in a plurality of wireless networks, the method comprising:
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inter-communicating between a Push-to-Talk-over-Cellular (PoC) system in a first wireless network and a Land Mobile Radio (LMR) system in a second wireless network using a network-to-network interface (NNI) gateway; wherein the PoC system provides PoC call sessions for PoC mobile units in the first wireless network; wherein the LMR system provides Push-to-Talk (PTT) call sessions for LMR subscriber units in the second wireless network; and wherein the gateway bridges the LMR system to the PoC system such that the PoC system is exposed to the LMR system as an emulated LMR system and the LMR system is exposed to the PoC system as an emulated PoC system when calls are placed across the first wireless network and second wireless networks between the PoC mobile units and LMR subscriber units.
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Specification