Virtual tributary path idle insertion using timeslot interchange

Details Virtual tributary path idle insertion using timeslot interchange Virtual tributary path idle insertion using timeslot interchange

1994-02-28

1995-07-18

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

3701101, 370102, H04J 312

Patent

active

054348587

ABSTRACT:
In a terminating station for a synchronous multiplex transmission network in which a frame of i rows and j columns is transmitted, the j columns of the frame is divided into k+m columns, with the k columns carrying a transport overhead and the m columns carrying an information payload. The m columns are subdivided into k groups of n columns each, and each of the corresponding n columns of each group carries a virtual tributary traffic. In the terminating station, a virtual tributary path idle (VTPI) pulse sequence is generated and inserted into the k columns of each frame. A timeslot interchanger, which provides the usual timeslot interchange within the frame, copies the contents of the k columns of the frame into one or more of the n columns of the k groups, respectively, of the same frame.

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