Operation, administration, and maintenance (OAM) features 2-33

Figure 2-15

STS BLSR with VT assignment support with VTX-48 or VTX-48e circuit pack (example)

EX1244p

Network Element A (DS1 add/drop)

 

DS1

 

OC-48

OC-48

 

 

4

 

11

12

 

2WAY From

To

 

DS1

OC-48

 

slot :4

slot :11

 

port :1

STS-1 :1

 

 

VTG :1

 

 

VT1.5 :1

OC-48 OC-48

11 12

Network Element D (protection pass-through) (see Note)

Network Element B (working pass-through)

OC-48 OC-48

11 12

2WAY From To

OC-48 OC-48 slot :12 slot :11

STS-1:1 STS-1 :1

 

DS1

 

OC-48

OC-48

 

 

6

 

11

12

 

Network Element C (DS1 add/drop)

Legend

= Fiber pair (duplex)

= Cross-connect = Working channel

= Protection channel

2WAY From

To

 

OC-48

DS1

 

slot :12

slot :6

 

STS-1 :1

port :7

 

VTG :1

 

 

VT1.5 :1

 

Note: There is no need to provision a cross-connect for a protection pass-through connection in a BLSR ring.

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

Page 71
Image 71
Nortel Networks 3500, NTRN10AN manual Network Element a DS1 add/drop