Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2006-07-18
2006-07-18
Pham, Brenda (Department: 2664)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S540000
Reexamination Certificate
active
07079555
ABSTRACT:
An integrated digital loop carrier (IDLC) system includes digital line feeders and signal processors to interface with the feeders an to ultimately provide data to subscriber instruments. The system can be employed as a central office terminal (COT) or remote digital terminal (RDT) with analog, T1 or SONET feeders and any conventional link medium. Data are put in DS1 format and multiplexed onto token ring optical loops for delivery to banks of channel units wherein the optical signals are translated to electrical signals for delivery to the Cus and subscribers. A method and apparatus is provided for mapping and demapping signals between virtual tributaries (VT) and digital signal formats in the RDT of an integrated digital loop carrier. An application-specific circuit provides such mapping and demapping functions as Floating Byte Synchronous VT to Locked Byte Synchronous VT, Floating Asynchronous VT to Locked Byte Synchronous VT, Floating Asynchronous VT to Floating Asynchronous VT, DS1 to Locked Byte Synchronous VT, DS1 to Floating Asynchronous VT, and DS1 to Floating Byte Synchronous VT.
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Table of Contents-Bellcore Technical Reference TRN-NWT-000253; Synchronous Optical Network (SONET) Transport Systems: Common Generic Criteria.
Table of Contents-Bellcore Technical Reference TR-NWT-000496; SONET Add-Drop Multiplex Equipment (SONET ADM) Generic Criteria.
Table of Contents-Bellcore Technical Reference TR-TSY-000008; Digital Interface Between the SLC 96 Digital Loop Carrier System and A Local Digital Switch.
Baydar Ertugrul
Boudreaux J. Bradley
Carter Nicholas
Chen Chung
Klonsky Steven
Bicks Mark S.
Goodman Alfred N.
Longanecker Stacy J.
Pham Brenda
Pulse Communications, Inc.
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