Abstract: Monitoring conditions within a switching network interconnecting two host systems engaged in a media call and adjusting the media parameters used by the host systems to improve call conditions.

Abstract: Providing a systematic and comprehensive mechanism for applying echo cancellation within a telecommunication switching system by a local switching system such as a PBX. Echo cancellation circuits are deployed throughout the telecommunication switching system using different types of echo cancellation circuits with each type having different capabilities with respect to a time offset of an echo return signal relative to when an voice signal was generated by a talker. The echo cancellation circuits deployed within the local telecommunication switch are an integral part of trunk circuits and provide the largest time offset. Further, the echo cancellation circuits deployed within in the local telecommunication switch are capable of controlling echoes in either direction with respect to the integral trunk circuit and may be used as service circuits if not needed by the integral trunk circuit.

Abstract: According to an embodiment, both a first and second of audio information are buffered during transmission so that when a transition occurs between transmission types no information is lost.

Abstract: Maintaining a count of the number of samples below a predefined energy level that are in the sample queue. This count is then utilized by a circuit that is removing samples from the sample queue to determine which samples to delete in order to maintain a synchronous flow of data to a synchronous physical interface. The samples in the queue are being received from a packet switched network via a voice coder. A low energy detector is utilized to determine the energy level of samples before the samples are placed within the sample queue. This information is then utilized to maintain a counter for the circuit that is removing samples from the sample queue. Utilizing the contents of this counter, the circuit removing samples can determine which samples should be deleted of the ones that have a low energy.

Abstract: Producing a textual transcription of a communication conference call. A participant who is going to be absent from the conference can indicate to a conference bridge key words defining topics of interest, and the conference bridge will identify these topics based on the textual transcript that is being done in real time. When the participant returns to the conference call, they can then search the portion of an audio recording that they missed utilizing index marks defining the topics of interest that are based on the entered key words.

Abstract: When it is determined that a sample queue exceeds a first predefined level, samples being received from a IP switched network are modified such that samples are removed within the voiced region of the samples by removing whole pitch periods of samples. If the sample queue is below a second predefined number, additional samples are placed into the queue by analyzing voiced samples from the IP switched network and generating additional pitch periods of samples.

Abstract: An apparatus and method combine visual addresses and electronic addresses for identification of electronic units. In which, the apparatus is one device per electronic unit. Each device comprises a circuit board encapsulated in a device enclosure, and the circuit board provides electronic identification for the electronic unit. The electronic identification of the electronic unit is communicated via bus pins attached to the circuit board to the electronic unit upon the bus pins being inserted into the electronic unit. A cabinet label is affixed to the device enclosure provides visual identification for the electronic unit.

Abstract: An apparatus and method communicate TTY calls by detecting a TTY call, determining that a digital display on a first telecommunication terminal is to be used to display TTY information of the call from a second telecommunication terminal and that audio information will be transmitted to the second telecommunication terminal, converting the TTY information from the second telecommunication terminal to digital display information, transmitting the digital display information to the first telecommunication terminal, and muting an incoming call audio path from the second telecommunication terminal to the first telecommunication terminal.

Abstract: An apparatus and method convert streaming text to a display of a telecommunication terminal to audio by detecting the streaming text being transmitted to the digital display and performing the conversion. Another embodiment converts text in one language directed to a display of a telecommunication terminal to text of another language and displays the resulting text on the display of the telecommunication terminal.

Abstract: Problems of front-end clipping and excessively long holdover times in digitally encoded speech are resolved by the introduction of a queue at the transmitting end of a digital conversation. Samples are transmitted from the queue until an interval of low energy samples is encountered upon which time samples are not transmitted from queue until energy samples are present.

Abstract: Performing tone detection for an amount of time that is calculated from the tones that the detector is designed to detect.

Abstract: A recently received portion of a transmit signal is utilized, and a pitch period of the received signal is determined. Then, the determined pitch period is utilized to search for similarities in the originally transmitted signal. This searching is done over a range of delays. Once the optimal delay is determined, it is then utilized as the delay between the transmitted signal and the received signal. Once this delay is known, the received signal can be time-aligned with the delayed signal.

Abstract: During a conference call, identifying a communication terminal, and inhibiting transmission of audio signals to the conference call by the identified communication terminal in response to operations performed by another communication terminal.

Abstract: Determining the time delay between a transmitted signal and an echo. Then, the echo canceller is adjusted by the delay amount so that the echo canceller tail length is relatively short.

Abstract: During a telecommunication conference call, the name of the current speaker on the conference call is displayed on all telecommunication units that are utilized by the participants in the conference call.

Abstract: Upon detecting the origination of an emergency call to a public safety answering point (PSAP), an IP softphone places this call over a cellular network rather than utilizing data communication. By placing the emergency call over the cellular system, the call is automatically routed by the cellular system to the appropriate PSAP, and the cellular system also provides to the PSAP the location of the IP softphone. The IP softphone utilizes a peripheral that provides the radio frequency circuitry necessary to place the emergency call to the PSAP.

Abstract: Utilizing an invisible agent within a remote switch to allow the redirection of calls received from a telephone set connected to a public telephone network to a main switching system.

Abstract: Dividing the function of wireless handset control from the function of telecommunication call control in a software architecture of a wireless telecommunication system. The wireless handset control function follows the wireless handset as it registers and is handed off from switch node to switch node; the telecommunication call control function remains on the switch node on which the wireless handset first became active and remains on that switch node until the wireless handset becomes inactive. Upon the wireless handset becoming inactive, the wireless telecommunication call control function is transferred to the switch node on which the wireless handset is currently registered.

Abstract: Accurately determining a location of a device by using an acoustic gyroscope within the device The acoustic gyroscope is periodically adjusted using information from external sources.

Abstract: Performing tone detection by (1) creating a search engine for every period of all possible tones, (2) applying the search engines on one period of the unknown tone, (3) eliminating the search engines that did not match the period of the unknown tone, (4) reapplying the remaining search engines, and (5) repeating (3) and (4) until the unknown tone can be identified as one of the possible tones based on the remaining search engines.