A method of operating a captioned telephone comprising the steps of dialing a telephone number to a relay gateway, connecting to the gateway over a communication network, performing a test to assess communication network quality, based on the test results, setting up the captioned telephone to operate in at least one of a first mode and a second mode wherein each of the first and second modes is one of (i) a PSTN mode in which data is communicated between the captioned telephone and the relay gateway via analog transmission and (ii) an IP mode in which data is communicated between the captioned telephone and the relay gateway via the Internet.

Enablement of a voice channel being established between an IoT device and a controller through the use of a voice-line service system.

Enablement of a voice channel being established between an IoT device and a controller through the use of a voice-line service system.

One embodiment of the present invention provides a collect call method and system thereof, more particularly, in order to charge the called party with a uniform toll for collect call, which is determined by only the type and location of called party terminal. In one embodiment, the collect call method, system and a counsel service providing method use a free VoIP network for part of the voice call link and a charge PSTN network for the rest of the voice call link. In one embodiment, if the first link corresponding to the collect call request is established, the collect call switch calls the called party terminal to establish the second link, and billing on the second link is initiated.

Systems, methods, and apparatus for providing real-time voice communication between devices connected to an Internet Protocol (IP) network and devices connected to a public switched telephone network (PSTN). In one implementation, the system includes a computer-controlled switch for connection to a local PSTN, for receiving calls from the IP network and the PSTN, and for routing calls to the PSTN and the IP network; and gate interface circuitry connected to the switch and adapted for connection to the IP network. The gate interface circuitry includes gateway circuitry for interfacing the IP network and PSTN voice circuits, and gatekeeper circuitry for performing address translation, admission control, bandwidth management, and zone management. The switch stores at least one PSTN destination address and at least one IP network destination address for each subscriber. The switch routes an incoming call to any one of the destination addresses stored for the subscriber.

Enablement of a voice channel being established between an IoT device and a controller through the use of a voice-line service system.

The present invention pertains to a method and system for preventing unauthorized access via signal interception and hacking to a user's secure mobile device. One embodiment of the system further comprises an encryption server in communication with the secure mobile device, a clear server in communication with a clear mobile device, and a termination gateway in connection with secure and clear POTS phones on the PSTN. The termination gateway communicates with the clear and encryption servers by IP tunneling. The system enables universal access between secure and non-secure packet-switched phone lines, operating via the Internet, and clear and secure circuit-switched phone lines operating on the PSTN.

An audio bridge unit is provided for connecting a conventional analog page/party station in an analog page/party system to IP-based page/party stations that employ multicast Voice over Internet Protocol (VoIP) technology to support page/party communications between analog page/party stations and the VoIP page/party stations. The audio bridge unit converts page and/or party audio line(s) to multicast channel(s). The audio bridge unit analog interfaces for its respective page and/or party lines, and each analog interface is assigned to an independent multicast channel on which it will transmit and receive full duplex audio between an analog page/party station and one or more IP-based page/party stations. The audio bridge unit provides the ability to configure the multicast group, port and Time to Live (TTL) setting for each of the analog channels associated with the page and/or party lines.

A system integrating a web browser and telephone is provided. A user enters, and the web browser receives, an input specifying a request to receive an audio output from the telephone. The web browser generates an audio stream which is communicated to the WebRTC gateway. The WebRTC gateway converts the audio stream from a first format into a second format. The WebRTC gateway communicates the converted audio stream to the SIP gateway, which forwards the audio stream to the telephone switch along with information identifying the telephone number to which the audio stream is directed. The telephone switch communicates the audio stream to the telephone where the audio stream is converted to be played using the speaker of the telephone.

The present invention pertains to a method and system for preventing unauthorized access via signal interception and hacking to a user's secure mobile device. One embodiment of the system further comprises an encryption server in communication with the secure mobile device, a clear server in communication with a clear mobile device, and a termination gateway in connection with secure and clear POTS phones on the PSTN. The termination gateway communicates with the clear and encryption servers by IP tunneling. The system enables universal access between secure and non-secure packet-switched phone lines, operating via the Internet, and clear and secure circuit-switched phone lines operating on the PSTN.