4-Cross-Connection_OMSN_R4.3-5.1_Ed01

8 Cross-Connections

© Alcatel University - 3FL 40034 ADAA WBZZA Ed.01

8.1

8 Cross-Connections Session presentation

 Objective: to be able to create and manage the CrossConnections in the SDH equipment  program:  8.1 Introduction  8.2 Creation & Management  8.3 SNCP  8.4 Loopback  8.5 Drop & Continue

8.2

8 Cross-Connections 8.1 Introduction

© Alcatel University - 3FL 40034 ADAA WBZZA Ed.01

8.3

8.1 Introduction Matrix role  A not-blocking matrix can interconnect all the afferent SDH and PDH signals with any other SDH and PDH port.  All ports are connected to the matrix in the same way, without any difference between the port types.  Connections are always performed by the matrix: no direct connection between two ports is allowed.  There is no constraint for the timeslot change for each cross-connection (e.g. AU-4#n of an SDH port can be cross-connected to AU-4#m of another SDH port, with “n” and “m” generic)  Several types of connections may be established, such as: Unidirectional Point to Point, Unidirectional Point to Multipoint, Bidirectional Point to Point, Protected.  AU4-4c, AU4-16c and AU4-64c concatenated signals can also be cross connected between any STM-4, STM-16 and STM-64 ports.

8.4

8.1 Introduction SDH-ETSI Multiplexing Structure

STM-N

xN

x1 AUG

AU-4

C-4

VC-4 x3

+

PDH SIGNAL LEVEL-n

C-n

STUFFING BITS x JUSTIFICATION

TUG-3 x7

x1

x1

TUG-2 x3

VCn-POH

TU-n POINTER

VC-n

TU-3

VC-3

C-3

TU-2

VC-2

C-2

TU-1

VC-1

C-1

140 Mbit/s

34 Mbit/s

6.3 Mbit/s

2 Mbit/s

C-n

= POINTER = MAPPING = ALIGNMENT

TU-n

= MULTIPLEXING

8.5

8.1 Introduction Termination points to cross-connect STM-1, STM-4, STM-16, STM-64 Ports

140Mbit/s port

34Mbit/s 45Mbit/s ports

2Mbit/s ports

PORTS Structure

AU-4

TU-3

TU-12

VC-4

VC-3

VC-12

STM-1

AU-4

Yes

-

-

Yes

-

-

TU-3

-

Yes

-

-

Yes

-

TU-12

-

-

Yes

-

-

Yes

140 Mbit/s

VC-4

Yes

-

-

Yes

-

-

34Mbit/s 45Mbit/s

VC-3

-

Yes

-

-

Yes

-

2Mbit/s

VC-12

-

-

Yes

-

-

Yes

STM-4 STM-16 STM-64

 Matrix can cross-connect:  Lower Order (LO) termination points: VC-12, VC-3, TU-12 and TU-3.  Higher Order (HO) termination points: VC-4 and AU-4.

8.6

8.1 Introduction Matrix capacity and structure 1640FOX

1650SM-C

1660SM rel 4.3

1660SM rel 5.1

1670SM

Card that implements the SDH matrix

SYNTH

SYNTH (main and spare)

MATRIXN (main and spare)

MATRIXE (main and spare)

HCMATRIX (main and spare)

Capacity of HPC

32x32

32x32

96x96

384x384

512x512

Capacity of LPC

32x32

32x32

64x64

256x256

0

HPC MATRIX

STM-N STM-N Port Port

AU4

AU4-AU4 CXC

AU4-VC4 CXC

STM-N STM-N Port Port

AU4 VC4-VC4 CXC

LPC MATRIX VC4

TU-VC CXC

TU-TU CXC

VC12

VC-VC CXC

2Mbit/s 2Mbit/s Port Port

VC3

34/45 34/45 Mbit/s Mbit/s Port Port

VC4

140 Mbit/s Mbit/s Port Port

8.7

8 Cross-Connections 8.2 Creation & Management

© Alcatel University - 3FL 40034 ADAA WBZZA Ed.01

8.8

8.2 Creation & Management 2Mbit/s D/I: Operation sequence  Steps for 2Mbit/s drop/insert(D/I) creation:  Structure the Au4 of the STM port up to the desired Tu12  Open Transmission view and use Terminate TP and Structure TPs commands  Cross-connect the prepared Tu12 with the desired Vc12 of the 2Mbit/s interface  Use Create Cross Connections command

8.9

8.2 Creation & Management 2Mbit/s D/I: Add TP in Transmission View 2nd- select Add TP

1st- select Transmission

Note: in this example Transmission View is empty. When reached by navigating from another view (e.g. from Port View) Transmission View displays the corresponding objects with the functional symbols

8.10

8.2 Creation & Management 2Mbit/s D/I: TP search

1st- Select STM-16 port

2nd- Select Au4 in Class filter

3rd-Click on Search.

4th- Optionally: click Show CC State to check if AU4 is already cross-connected

5th- select the desired AU4

6th- Click on OK

8.11

8.2 Creation & Management 2Mbit/s D/I: Terminate TP

1st- Select the AU4

2nd-Select Terminate TP

8.12

8.2 Creation & Management 2Mbit/s D/I: Structure Tug3

1st- To expand the tree: double click on the object to get the next object

2nd- Select the Tug3

3rd- Select Tu12

8.13

8.2 Creation & Management 2Mbit/s D/I: Transm. view with Tu12

To expand the tree: double click on the object to get the next object

8.14

8.2 Creation & Management 2Mbit/s D/I: Create Cross Connections

1st- select the Tu12 to cross-connect

2nd- select Create Cross Connections

8.15

8.2 Creation & Management 2Mbit/s D/I: Choose Output 1st- select Bidirectional and Not protected

2nd- Choose the output Termination Point(Vc12)

8.16

8.2 Creation & Management 2Mbit/s D/I: Select Vc12

1st- select the 2Mbit/s Port card(not the Access card A21E1)

2nd- Select Vc12 in Class filter

3rd-Click on Search.

4th- Optionally: click Show CC State to check if AU4 is already cross-connected

5th- select the desired Vc12

6th- Click on OK

8.17

8.2 Creation & Management 2Mbit/s D/I: Final step

Input Tu12 and Output Vc12 are available

Press OK

8.18

8.2 Creation & Management 2Mbit/s D/I: results

Termination Points in the SDH Port

Termination Points in the matrix

Termination Points in the PDH Port

Port View of A21E1 card

8.19

8.2 Creation & Management 2Mbit/s D/I: Cross Connection Management opening

Select Cross Connection Management

8.20

8.2 Creation & Management 2Mbit/s D/I: Cross Connection Management result

Press Search

Lower order cross-connection Tu12-Vc12 Higher order cross-connection Au4-Vc4

8.21

8.2 Creation & Management Tu12 Pass Through: creation 1st-Structure the AU4 of one STM Port up to Tu12 2nd-Structure the AU4 of the other STM Port up to Tu12

3rd-Select Create Cross Connections

8.22

8.2 Creation & Management Tu12 Pass Through: Choose Output 2ndMATRIX

3rdTu12

4thSearch

5th-Tu12

1stChoose

7th-OK

6th-OK 8.23

8.2 Creation & Management Tu12 Pass Through: results

Transmission View

Cross Connections Management

8.24