1
Thomas J Baumgartner, Yeou H Hwang, Edith H Jones, Wu Hon F Leung, Lara F Morgan, Shi Chuan Tu: Multiple call control method in a multimedia conferencing system. AT&T Bell Laboratories, R T Watland, M B Johannesen, March 16, 1993: US05195086 (321 worldwide citation)

A method for use in a multimedia conferencing arrangement to control multiple concurrent calls where each call comprises one or more channels. A first call among a first set of user stations and a second call among a second set of user stations are merged into a single call comprising a plurality of ...


2
David L Thomson: Harmonic speech coding arrangement where a set of parameters for a continuous magnitude spectrum is determined by a speech analyzer and the parameters are used by a synthesizer to determine a spectrum which is used to determine senusoids for synthesis. AT&T Bell Laboratories, R T Watland, M B Johannesen, January 12, 1993: US05179626 (67 worldwide citation)

A harmonic coding arrangement where the magnitude spectrum of the input speech is modeled at the analyzer by a relatively small set of parameters and, significantly, as a continuous rather than only a line magnitude spectrum. The synthesizer, rather than the analyzer, determines the magnitude, frequ ...


3
Raymond W Bennett, Joseph G Klinger: Telephone system with monitor on hold feature. AT&T Bell Laboratories, R T Watland, M B Johannesen, March 16, 1993: US05195087 (61 worldwide citation)

An arrangement providing a monitor-on-hold feature for telephone station apparatus. The exemplary apparatus includes a handset transmitter and receiver, a speaker, and four user control buttons. A user is given the capability to move a connection for a first call from the handset to the speaker by s ...


4
James M Johnson Jr, Ronald A Spanke: Arrangements for switching multiple packet types combined in a single packet stream. AT&T Bell Laboratories, R T Watland, K H Samples, M B Johannesen, May 19, 1992: US05115427 (57 worldwide citation)

An arrangement for switching broadband ISDN (B-ISDN) packets is disclosed. The arrangement comprises a broadband packet switch connected to B-ISDN customers and to a narrowband switch via an interface unit. B-ISDN control packets are connected by the broadband packet switch to the narrowband switch ...


5
Brian D Bolliger, Charalambos G Constantinides, Steven L Stevens: Call path resource allocation in a wireless telecommunications system. AT&T Bell Laboratories, W Ulrich, M B Johannesen, July 6, 1993: US05226071 (55 worldwide citation)

A wireless telecommunications system where call path resources are allocated in an orderly manner by queuing call requests during, for example, radio channel unavailability, and assigning radio channels to queued call requests as they become available. To accomodate movement of the mobile station wi ...


6
Mark A Johnson, Stephen A O Brien, Bradley T Wyman: Voice messaging system with voice activated prompt interrupt. AT&T Bell Laboratories, M B Johannesen, October 13, 1992: US05155760 (48 worldwide citation)

An arrangement providing voice activated prompt interrupt for a voice messaging system. The exemplary apparatus includes a telephone line interface, a memory device, a processor, a prompting device and a recording device. Once a call is established at the interface, the processor causes the prompt t ...


7
Kari T Teraslinna, Wing N Toy: Broadcast packet switch network. AT&T Bell Laboratories, M B Johannesen, February 5, 1991: US04991171 (45 worldwide citation)

A packet switching arrangement for receiving packets including broadcast addresses and connecting representations of the received packets to any combination of output ports specified in the address is disclosed. The packet routing units of the network both generate packet representations and selecti ...


8
Wu Hon F Leung, Shi Chuan Tu: Conference connection method in a multicast packet switching network. AT&T Bell Laboratories, R T Watland, M B Johannesen, April 7, 1992: US05103444 (34 worldwide citation)

A conference connection method for use in a multicast packet switching network. Once the packet switches and inter-switch links to comprise a multicast connection among three or more endpoints are determined, a check is performed to determine whether that multicast connection would to usable to effe ...


9
Thomas J Baumgartner, Wu Hon F Leung: Transformation method for network conference connections. AT&T Bell Laboratories, R T Watland, M B Johannesen, August 11, 1992: US05138614 (22 worldwide citation)

A transformation method for network conference connections where the network operations are determined based on stored information defining the original connection and stored information defining the target connection thus affording the opportunity to advantageously reuse existing paths. The paths t ...


10
Satyasai Bhagavatula: Telephone with character keypad. Lucent Technologies, M B Johannesen, June 5, 2001: US06243460 (11 worldwide citation)

A telephone that has dual keypads, wherein one of the keypads is a standard 12 number (1-9, 0, #, and *) keypad and the other keypad comprises a plurality of keys having a single character on each key. When a character key is pressed, it generates a DTMF pair corresponding to one of the 12 stand ...