Test Functions
NetBlazer
489
OH - SONET/SDH
F1
: User/User Channel. This byte is reserved for user purposes. This
byte is only defined for the first STS-1/STM-1 frame of a composite
signal.
D1
,
D2
, and
D3
: Data Communications Channel (DCC). Provides a
192 Kbit/s data communication between two STEs for operation
functions such as OAM&P. These bytes are only defined for the first
STS-1/STM-1 frame of a composite signal.
Transport OH - Line/MS
H1
and
H2
: Pointer.
SONET: H1 and H2 bytes are combined to form a pointer indicating
where the path overhead begins within each SPE.
SDH: H1 and H2 bytes are combined to form a pointer indicating where
the VC (Virtual Container) frame begins within each SPE.
Bits 5 and 6 of the H1 byte represent the SS bits and are configurable as
follows.
H3
: Pointer Action. H3 is an extra byte used to compensate for the SPE
timing variation. The H1 and H2 pointer tell the receiver when the H3
pointer is used.
SONET: This byte must be defined in every STS-1 to STS-n frame of a
composite signal.
SDH: This byte must be defined in every STM-1 of an STM-N signal in
the event of negative justification, otherwise it is not defined.
SS Bits
Description
00
SONET
01
Undefined
10
SDH
11
Undefined
Содержание FTB-1
Страница 1: ...User Guide FTB 700G 800 Series NetBlazer for FTB 1 ETHERNET AND MULTISERVICE TESTER...
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Страница 59: ...Test Setup Test Applications NetBlazer 47 SONET SDH BERT For SDH BERT...
Страница 64: ...Test Setup Test Applications 52 FTB 700G 800 Series SONET SDH DSn PDH BERT For SDH...
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Страница 604: ...Glossary 592 FTB 700G 800 Series Acronym List W WAN Wide Area Network WIS WAN Interface Sublayer WWN World Wide Name...
Страница 606: ...Glossary 594 FTB 700G 800 Series 10G Ethernet Client The following figure presents a typical network application...
Страница 619: ...Glossary NetBlazer 607 Ethernet Cables Straight Through Cable 1000 Mbit s Crossover Cable 1000 Mbit s...
Страница 646: ...Glossary 634 FTB 700G 800 Series SONET DSn SDH PDH The GUI Grid indicates the TUG 2 x and TUG 3 x values...
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Страница 674: ...0 5 1 5 48 5 0 176 W d y K y K D...