Edward L Morgan

US Patent:

47317850, Mar 15, 1988

Filed:

Jun 20, 1986

Appl. No.:

6/876613

Inventors:

James J. Ferenc - Boulder CO
Robert W. Gebhardt - Boulder CO
Gary J. Grimes - Thornton CO
Edward B. Morgan - Boulder CO
Gabe A. Sellers - Northglenn CO

Assignee:

American Telephone and Telegraph Company - Holmdel NJ
AT&T Information Systems Inc. - Holmdel NJ

International Classification:

H04Q 1104
H04J 302
H04J 324

US Classification:

370 60

Abstract:

Apparatus for and a method of inserting circuit switch information and packetized data into different time slots of a time division multiplexed bus. A memory having a location individual to each time slot is written with information specifying whether the time slot individual to each location is to serve circuit switch information or packet data. The readout of each memory location during the occurrence of it's associated time slot controllably effects the application of either the circuit switch information or the packet data to the bus. Packet data can be inserted into each time slot not currently being used by the circuit switch. A special information bit is inserted into each time slot to specify whether the remainder of the bits of the time slot represents circuit switch or packet information. The information bit is used by receiving apparatus to steer the bits of each time slot to either a receiving circuit switch or a receiving packet switch.