363-206-285
System Introduction
1-8
Issue 3
June 2001
22G-U OLIUs can be used in all releases that currently support 22F OLIUs
(Release 3.1 and later).
Release 7.1 is an enhanced ring release featuring interworking with an OC-12
ring and interworking with
SLC
-2000 Release 3.1 and 3.2 in a ring. Release 7.1’s
new features include channel state provisioning, STS-1 signal degrade protection
switching, OC-12 VT1.5 path switched ring (ring 0x1 low-speed interface) optical
interconnections between DDM-2000 OC-3 and OC-12 ring shelves (OC-3/IS-3),
enhanced DS3 PM, and additional TL1 commands and enhancements.
Channel state provisioning is a capability provided on DDM-2000 OC-3 and
OC-12 Multiplexers that suppresses reporting of alarms and events during
provisioning by supporting multiple states (automatic, in-service, and not-
monitored) for VT1.5 and STS-1 channels. The STS-1 signal degrade feature
requires the 22G-U or 22D-U OLIUs and measures the BIP-8 (B3) parity
violations and causes a protection switch to the alternate path if the provisioned
bit error rate threshold is crossed. The OC-12 VT1.5 path switched ring (ring 0x1
low-speed interface) OC-3/IS-3 interface offers a significant advantage over the
1+1 protected OC-3/IS-3 interface for VT1.5 path switched ring applications. Ring
(0x1) low-speed interface means two service lines (no protection lines) are used
between the OC-12 Multiplexer ring and the OC-3 Multiplexer ring. Switching is
not done on the DDM-2000 OC-12 Multiplexer; rather VT1.5 or STS-1 level
switching is done at the DDM-2000 OC-3 Multiplexer.
Enhanced DS3 PM provides a collection (from the fiber or high-speed interface) of
the DS3 parity-bit (P-Bit) and frame and multiframe (F&M) bit ES, SES, and UAS
to the already provided coding violations and severely errored frame seconds
(SESF). The feature is mainly used for DS3 tariff verification.
Release 7.2 is a ring release that provides OC-3 operations interworking with the
FT-2000 OC-48 Lightwave System. It also allows interworking between the old
controllers (BBG5 and BBG7) and the new controllers (BBG8/BBG8B and BBG9).
DDM-2000 FiberReach (OC-1) extensions can be added to Release 7.1 rings by
upgrading the rings to Release 7.2 and adding a Release 9.0 OC-3 host node.
Only OC-3 DDM-2000 FiberReach host nodes need Release 9.0 software and the
new controllers.
■
New applications:
— OC-3 operations interworking with FT-2000 OC-48 Lightwave
System. Single-ended operations and DCC connectivity supported
over OC-3 interfaces. Requires FT-2000 OC-48 Lightwave System
Release 6.0 software.
— OC-3/IS-3 DRI with VT1.5/STS-1 drop and continue. Single-ended
operations and DCC connectivity between DDM-2000 systems or
DDM-2000 and FT-2000 OC-48 Lightwave Systems in DRI
applications.
— Increased network size. A DDM-2000/
SLC
-2000/FT-2000 OC-48
Lightwave System subnetwork of 24 network elements (NE).
Summary of Contents for DDM-2000 OC-3
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Page 14: ...xiv Issue 3 June 2001 Contents GL Glossary GL 1 ...
Page 24: ...xxiv Issue 3 June 2001 Figures ...
Page 28: ...Tables xxviii Issue 3 June 2001 A A SONET Overview A 34 SONET Transport Rates A 20 ...
Page 58: ...363 206 285 About This Document lviii Issue 3 June 2001 ...
Page 60: ...1 ii Issue 3 June 2001 Table of Contents ...
Page 80: ...363 206 285 System Introduction 1 20 Issue 3 June 2001 ...
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Page 252: ...363 206 285 Transmission and Synchronization Interfaces 5 60 Issue 3 June 2001 ...
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Page 436: ...363 206 285 Circuit Pack Descriptions 7 158 Issue 3 June 2001 ...
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Page 518: ...363 206 285 Administration and Provisioning 8 78 Issue 3 June 2001 ...
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Page 690: ...363 206 285 Commands and Reports 11 20 Issue 2 February 2000 ...
Page 1252: ...11 582 2000 February 2 Issue OC 3 DDM 2000 ...
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Page 1276: ...363 206 285 A SONET Overview A 22 Issue 3 June 2001 ...
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Page 1348: ...363 206 285 Acceptance IXL 001 Issue 3 June 2001 Page 2 of 2 DDM 2000 OC 3 MULTIPLEXER ...
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Page 1440: ...NTP 008 Circuit Order 363 206 285 Page 6 of 6 Issue 2 February 2000 DDM 2000 OC 3 MULTIPLEXER ...
Page 1458: ...363 206 285 Circuit Order NTP 011 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
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Page 1652: ...363 206 285 Circuit Order NTP 038 Issue 2 February 2000 Page 6 of 6 DDM 2000 OC 3 MULTIPLEXER ...
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