Method and circuitry for transmission of speech signals in a bro

Details Method and circuitry for transmission of speech signals in a bro Method and circuitry for transmission of speech signals in a bro

1989-09-05

1991-09-24

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370 941, 04Q 1104, H04Q 104

Patent

active

050519832

ABSTRACT:
A broad-band communications network consists of at least one broad-band packet exchange for transmission of communications signals in packets of a fixed length and one telephone exchange connected to the broad-band packet exchange by means of at least one interworking unit. Packing/depacking units are provided at the interfaces of the packet exchange to the subscriber's sets and within the respective interworking units. A control signal is sent following trunking to the packing/depacking units involved in the connection to be established for connections with a network transfer. The control signal controls the packing/depacking units such that packets of a fixed length intended for transmission of speech signals are formed or broken up, in accordance with a adjusted degree of packet filling which is reduced in comparison with the full packet capacity.

REFERENCES:
patent: 4556972 (1985-12-01), Chan et al.
patent: 4782485 (1988-11-01), Gollub
patent: 4862451 (1989-08-01), Closs et al.
"Broadband ISDN Switching Capabilities from a Services Perspective" by Dan R. Spears; IEEE Journal on Selected Areas in Communications, vol. SAC-5, No. 8, Oct. 1987, New York, NY; pp. 1222-1230.
"High Speed Packet Switching Network for Multi-Media Information" by S. Nojima, et al.; Computer Networking Symposium (IEEE, New York); Nov. 17-18, 1986, Washington, DC; pp. 141-150.
"Die Vermittlungstechnik in integrierten Paketuebermittlungssystemen (Teil 1)" von W. Schmidt; 41. Jahrang, Heft 9, Sep. 1987; pp. 1-9.

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