Multiplex communications – Diagnostic testing – Using oam cells
Patent
1995-05-26
1997-04-22
Olms, Douglas W.
Multiplex communications
Diagnostic testing
Using oam cells
370506, 371 201, 379 15, H04J 314
Patent
active
056234805
ABSTRACT:
A DS3 level access, monitor and test system for a telephone network. The system provides selective, and hitless, bit overwrite in any of the embedded DS1, DS0 and substrate channels in a DS3 signal. Multiple DS0 and subrate channels can be tested via the asynchronous time slot interchange in conjunction with the recombiner of the present invention. The present invention further includes a lookahead reframer for framing to the DS3 signal. The present invention also includes a facilities data link (FDL) handler for capturing the FDL channel data in every DS1 channel in a DS3 signal. A high speed bit-for-bit compare is interfaced to a protect path to provide 1:1 fault protection in the system of the present invention. Full time performance monitoring on DS1 and DS3 signals is performed by a shared resource. The system of the present invention provides an integrated approach to synchronization measurement and relative synchronization.
REFERENCES:
patent: 4993013 (1991-02-01), Shinada et al.
patent: 4996695 (1991-02-01), Dack et al.
patent: 5138616 (1992-08-01), Wagner, Jr. et al.
patent: 5197062 (1993-03-01), Pickelsimer
Canniff, R.J., A digital concentrator for the SLC.TM.-96 System, The Bell System Technical Journal; 60:2 121-159 (Feb. 1981).
Blair, C., SLIPS: Definitions, causes, and effects in T1 networks, A Tautron Application Note, AN-15, Issue 1 (Sep. 1988).
Kartaschoff, P., Synchronization in digital communications networks, Proceedings of the IEEE; 79:7 1019-1028 (Jul. 1991).
Rodenbaugh, S.M., et al., Advanced network management needs for optical networks, IEEE International Conference on Communications; CH829-0/90/0000-0159 218.2.1--218.2.5; (Apr. 1990).
Agre, D., et al., A flexible distributed software architecture for embedded network diagnostics, IEEE International Conference on Communications; CH2829-0/90/0000-0213 222.1.1--222.1.5; (Apr. 1990).
Cadieux, K., et al., A new network element for performance monitoring and test access spanning the digital hierarchy, IEEE International Conference on Communications; CH2829-0/90/0000-1319 334.4.1--334.4.5 (Apr. 1990) .
Wright, M. A., DS3: It's the road to the future, Telephone Engineer and Management, pp. 38,39 & 42 (Feb. 1990).
Wright, M. A., Don't leave your control logic in the dark, reprint from Telephony; (Sep. 11, 1989).
Wright, M. A., Digital companding: How does it work?, reprint from Telephone Engineer and Management (Aug. 15, 1988).
Wright, M. A., Distortion & error in DS1 facilities, reprint form Telephone Engineer and Management (Jan. 1, 1988).
Technical Staff of Bell Telephone Laboratories, Transmission systems for Communications, 5th edition, pp. 659-669, (1982).
Cowles, Calvin D., New Maintenance Strategies for Digital Facilities Networks, Proceedings of the National Communications; vol. 42, No. 2 (Sep. 30, 1988).
Cadieux Kevin
Engdahl Thomas L.
Hartmann Paul R.
Pope Kevin
Applied Digital Access, Inc.
Blum Russell W.
Olms Douglas W.
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