Operation, administration, and maintenance (OAM) features 2-159

Figure 2-50

Synchronization flow detail in an OPTera Metro 3500 network (example)

EX1292

DUS

Rx

Tx

Line

YX

Tx

Rx

ST3

 

 

 

Synchronization

 

 

 

(Active)

stream

 

 

 

 

 

 

Tx

Rx ST3

Tx

Rx DUS

 

X

 

 

Y

 

Line

 

 

Line

 

Y

 

ST3 Rx

X

 

ST3 Rx

Tx

Tx

 

 

 

Synchronization

 

 

 

 

boundary

 

 

Tx

Rx ST3

Tx

Rx DUS

 

X

 

 

Y

 

Line

 

 

Line

 

Y

 

 

X

Synchronization

ST3 Rx

Tx

ST3Rx

Tx

stream

(Active)

 

 

 

RxTx

XY

Head end

TxRx

Legend

= Optical interface

Planning and Ordering Guide—Part 1 of 2 NTRN10AN Rel 12.1 Standard Iss 1 Apr 2004

Page 197
Image 197
Nortel Networks 3500, NTRN10AN manual Dus