Multiplex communications – Wide area network – Packet switching
Patent
1987-02-09
1989-04-18
Olms, Douglas W.
Multiplex communications
Wide area network
Packet switching
370 58, 370 79, H04J 318
Patent
active
048233420
ABSTRACT:
A time division exchange provided with a plurality of compression circuits for carrying out signal compression in accordance with a plurality of compression laws and a plurality of expansion circuits for carrying out signal expansion in accordance with a plurality of expansion laws is operated in the following manner. In a case where the exchange is used as an originating exchange, a compression circuit provided in the originating exchange for carrying out signal compression according to a desired compression law is selectively used at each time slot, and information on the desired compression law is sent out from the originating exchange. Further, in a case where the exchange is used as a destination exchange, an expansion law to be used on the receiving side is selected on the basis of the above information, and an expansion circuit provided in the destination exchange for carrying out signal expansion according to the selected expansion law is selectively used at each time slot.
REFERENCES:
patent: 4630257 (1986-12-01), White
patent: 4661946 (1987-04-01), Takahashi et al.
patent: 4675863 (1987-06-01), Paneth et al.
patent: 4704629 (1987-11-01), Vreeswijk et al.
Hirai Koji
Kusaba Akira
Morita Takashi
Hitachi , Ltd.
Marcelo Melvin
Olms Douglas W.
LandOfFree
Time division exchange system having functions of compressing an does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Time division exchange system having functions of compressing an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Time division exchange system having functions of compressing an will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2400677