Processor device for terminating and creating synchronous transp

Multiplex communications – Diagnostic testing – Of a switching system

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Details

370359, 370395, 370474, 370503, 370535, H04L 1252

Patent

active

058503870

ABSTRACT:
In the inbound direction, a tributary processor (32) includes an SPE encoder/decoder for extracting a synchronous payload envelope (SPE) from an STS-1P signal. A path terminator (62) may extract DS3 signals or a matrix payload envelope (MPE) from the STS-1P SPE. A DS1/DS3 extractor (68) generates DS1 signals from either the DS3 or MPE signals. An MPE mapper (70) creates MPE signals from the DS1 signals. A wideband stage interface (74) converts the MPE signals into matrix transport format (MTF) signals for cross-connection in a wideband center stage matrix (22). In the outbound direction, the wideband stage interface (74) receives MTF signals from the wideband center stage matrix (22) and generates MPE signals therefrom. The MPE signals are sent through the MPE mapper (70) in order to extract DS1 signals. The DS1 signals are converted to DS3 signals or another MPE mapping by the DS1/DS3 extractor (68). The path terminator receives DS3 or MPE signals for conversion into an STS-1P SPE. The SPE encoder/decoder creates the STS-1P signals from the STS-1P SPE for transmission to the appropriate interfaced subsystem or network.

REFERENCES:
patent: 5040170 (1991-08-01), Upp et al.
patent: 5267239 (1993-11-01), Pospischil et al.
patent: 5436890 (1995-07-01), Read et al.
Bergvist et al., AXD 4/1, a Digital Cross-Connect System Ericsson Review No. 3, 1992.
Robert W. Pullen, Bandwidth Management In The Asynchronous To Sonet Transition 1992-1993 Annual Review of Communications.

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