Time slot interchanger and digital communications terminal for I

Details Time slot interchanger and digital communications terminal for I Time slot interchanger and digital communications terminal for I

1996-12-04

1999-03-16

Patel, Ajit

Multiplex communications

Communication techniques for information carried in plural...

Combining or distributing information via time channels

370376, H04J 312

Patent

active

058839020

ABSTRACT:
The invention comprises a time slot interchanger and method for multiplexing ISDN D-channel signals into multiplexed signals in a digital communications terminal. One method comprises receiving a frame of communication signals wherein some of the communication signals represent ISDN D-channel signals wherein each ISDN D-channel signal is represented by a first number of data bits and a second number of other bits. A copy of the frame of communication signals is stored in each of a first, second, third and fourth memory during a first frame period. At least some of the stored communication signals are retrieved from the first, second, third, and fourth memories during a second frame period. Multiplexed signals are then assembled wherein at least one multiplexed signal comprises a multiplexed combination of the data bits of ISDN D-channel signals retrieved from at least two of the first, second, third, and fourth memories.

REFERENCES:
patent: 5157656 (1992-10-01), Turduic et al.
patent: 5640387 (1997-06-01), Takahashi et al.
M.J.M. Forbes et al, Integrated Access: The Achievement of A Vision, IEEE, and 2081-2086, 1991.
Arvidson et al, A Generic Digital Switch Interface(TR-303) For Local Access, IEEE, 2087-2091, 1991.
Klim et al, Flexibility and Quality in the Access Network, IEEE, 1864-1868.
Bellcore Information, Bellcore: GR-303 Integrated Access Platforms, Mar. 3, 1998.

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