Methods and apparatus for concatenating a plurality of lower lev

Details Methods and apparatus for concatenating a plurality of lower lev Methods and apparatus for concatenating a plurality of lower lev

1992-05-01

1993-10-26

Olms, Douglas W.

Multiplex communications

Wide area network

Packet switching

370112, 359115, H04J 1408

Patent

active

052572617

ABSTRACT:
Apparatus and methods for concatenating a plurality of lower level SONET signals into higher level SONET signals are provided. In generating a higher level SONET signal (e.g., STS-12C) using a plurality of lower level SONET signal processing apparatus (e.g., STS-3 type terminators), the J1 bytes of each lower level signal are tracked through the FIFOs of the apparatus to provide J1 byte control signals, and a logic circuit is provided having phase 3 of the outgoing STS-3 clock, and the J1 byte control signals from all the STS channels of the higher level signal as inputs. The J1 byte control signals from all the channels are combined as a J1ANDcomposite by utilizing a single bus which is coupled to each of the apparatus. The logic circuit inhibits a read of a J1 byte from any particular FIFO unless the J1ANDcomposite signal is high at phase 3 of the clock. In addition to the J1 byte circuitry, the lower level SONET signal processing apparatus are coupled to adjacent apparatus so that the B3 parity byte value from one apparatus is passed to the next apparatus for inclusion in its calculation of the B3 parity byte. Eventually, the master apparatus calculates a B3 parity byte for the STS-Nc signal. The master apparatus also provides the slave apparatus with transmit and receive SPE signals, and a receive J1 signal.

REFERENCES:
patent: 4967405 (1990-10-01), Upp et al.
patent: 5040170 (1991-08-01), Upp et al.
patent: 5065396 (1991-11-01), Castellano et al.
patent: 5134614 (1992-07-01), Baydar et al.
patent: 5142529 (1992-08-01), Parruck et al.

Affiliated with

Also associated with

Rating

Methods and apparatus for concatenating a plurality of lower lev does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Methods and apparatus for concatenating a plurality of lower lev, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Methods and apparatus for concatenating a plurality of lower lev will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-964909