10 rn2819aen20gla0 a interface integration

8/10/2019 10 RN2819AEN20GLA0 a Interface Integration

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A Interface Integration with MML

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RN2819AEN20GLA01 N okia Siemens Net works

A Interface Integration with MMLRG20 (BSS)


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Objectives

After completing this learning element, the participant should be able

to:

Describes the A interface signalling hierarchy and traffic channel distribution within the BSC

Use the BSS Integration reference material to create an A interface connection

Integrate the Ater and A interfaces

Create the Standalone TCSM unit

TCSM3i and Combi TCSM Configuration and TR3 roles

Create TCSM3i hardware in Master BSC

Create Combi TCSM unit in Master and Remote BSC

Create connecting the A interface ET

Explain and Congfigure Ater Interface in MGW

Creating the CCS7 signalling (MTP, SCCP, BSSAP, BSSMAP and DTAP)

Creating the speech channels and interrogate A interface parameters Explain SIGTRAN (SCTP, M3UA) concept and creating A interface SIGTRAN in BSC

Refer to RG20 Documentation:

Integrate and configure\ BSS Integration


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A/Ater interfaces configuration

BSC

TCSM

FR

FR

FRTCSM

TCPCM-1

TCPCM-1

TCPCM-3

TCPCM-2

CCSPCM-0

CCSPCM-1

CCSPCM-2

CCSPCM-3

MGW

FR

FR

FRTCPCM-3

TCPCM-2

CCSPCM-4

CCSPCM-5

FR TCPCM-3

FR TCPCM-3

CCSPCM-5

CCSPCM-6

Ater InterfaceA Interface

Note:

For TCSM2, max 4 PCMs connecting to A-IF for FR traffic, max 7PCMs for HR traffic.

For TCSM3i, max 4 PCMs to A-IF.


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Steps to integrate the Ater and A interfaces

CCS7 signalling

Connect the Ater interface ET

START

Create the transcoder unit

Configure MTP layer

Configure SCCP and BSSAP

Create speech channels

END


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TCSM3i Solution architecture

configuration options:

Standalone TCSM3i ET16 (Ater) ET16 (A) Standalone TCSM3i ETIP1-A (Ater) ET16 (A)

Standalone TCSM3i ET16 (Ater) ETP-A (A)

Standalone TCSM3i ET16 (Ater) ETIP1-A (A)

Standalone TCSM3i ETIP1-A (Ater) ETP-A (A)

Standalone TCSM3i ETIP1-A (Ater) ETIP1-A (A)

Combined Installation ETS2/ ETIP1-A / ETP-A


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Connect the Ater interface ET

yes

Create cartridges for ETs and TR3

PIU exists?

START

Create ET PIU

ET connected tothe right IF?

Connect ET

ye s

no

no

Check ET settings and change them if necessary

Change working state

END

-Create an ET with the ZWT command group.

-Connect the ET with the ZWUC command.

-If necessary, modify the ET settings with the ZYEC command and change theworking state (ZUSC) to WO-EX.


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Identify connected ET-Interface

< ZWUP:32&35&40&96;

BSC3i

PCM COMP PROC INFO_1 INFO_2 INFO_3 ADD_INFO PAGE 132 BCSU SC7PRB ETPCM - - VIRTUAL_PCMS

33H 01B1H 0000H 0000H 0100H 128035 - EQMANA - - -

FFH 01C5H 0000H 0000H 0000H40 BCSU ERATES ETPCM - -

33H 010AH 0000H 0000H 0000H96 BCSU ABIPRB ETPCM - - VIRTUAL_PCMS

30H 01BFH 0000H 0000H 0000H 1792 - 1799

TOTAL OF 3 PCM CIRCUITS

If the ET is already connected, it has a controlling BCSU (Base Station ControllerSignalling Unit) and process info. The controlling process can be

-SC7PRB: A interface

-ABIPRB: Abis interface

-ERATES: Gb interface

EQMANA means the ET is not connected.


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Steps to create the Standalone TCSM unit

Create cabinet clock cartridgeno

no

yes

yes

Change TCSM working state

Create TC PCM and connect TR3 to BSC

Create plug-in units : ET16, TR3 and CL3TG

Create TCSM functional unit

Create cartridges for ETs and TR3

Add through connections

Cabinet exists?

TCSM usedfor CCS7?

START

END

Create transcoder cabinet

Note:

TCSM3i has 4 different types:

a) Cabinet Head Master: create CL3TG *2+TR3*1b) Cartridge Master: create ET16 for A-IF*1+ ET16 for Ater-IF*1+TR3*1

c) Master: create ET16 for A-IF *1+ TR3*1

d) Normal: create TR3*1


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TCSM3i Configuration in RG20 (1/2)

Fan trayFan tray Fan trayFan tray

Fan trayFan tray Fan trayFan tray

TCSMTCSM

PDFUPDFU PDFUPDFU

TCSMTCSM

TCSMTCSM TCSMTCSM

TCSMTCSM TCSMTCSM

TCSMTCSM TCSMTCSM

TCSMTCSM TCSMTCSM

ETET

ETET

ETET ETET

ETET ETET

ETET ETET

CLS

CLS

ETETCLS

CLS

ETETTCSM TransCoder SubMultiplexerunits

CLS Clock & Synchronization Units

ET Exchange Terminal Units

PDFU Power Distribution Fuse Unit


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RN2819AEN20GLA01 0 N okia Si emen s Networks

TCSM3i configuration in RG20 (2/2)

TR3 PIUs

Group 1

Ater IF ETsfor Group 1

A IF ETsfor Group 1

Each group consists of 4 TR3 PIUs. Each TR3 is a different TCSM.

The TR3 groups are backplane connected to the correspondent A IF PIU(four ETs for each TR3) and to the Ater IF PIU (one ET for each TR3).




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YesNoYesNo4,8,12,16,31

,35,39

A ETIP/ETP master

NoYesYesNo3,7,11,15,

30,34,37

Ater ETIP master

YesYesNoYes(1),5,9,13,

28,32,36

ET16 Master

YesYesYesYes2Cabinet headmaster

YesNoNoYes1(,9), 28Cartridge master

A ETIP/ETP,Ater ET16,

mixed

Ater ETIP, AET16, mixed

All ETIP (orETP on A

interface +

ETIP Ater)

All ET16,Normal

TrackRole

TR3 Roles in TCSM3i


BSC/TCSM descriptions\ Product Description of TCSM3i HighCapacity Transcoder Submultiplexer

Note:

TCSM3i has 4 different types:

a) Cabinet Head Master: create CL3TG *2+TR3*1

b) Cartridge Master: create ET16 for A-IF*1+ ET16 for Ater-IF*1+TR3*1

c) Master: create ET16 for A-IF *1+ TR3*1

d) Normal: create TR3*1




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Combi TCSM configuration

AInterface

Master BSC MSC/MGWCombi TCSM3i

SBMUX

SETSTM1/OC3

GSW2KB Hotlink

TR3Ts

SET

SET

Remote BSC

ET

ET

Remote BSC




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RN2819AEN20GLA013 N ok ia Sie me ns Ne two rk s

Create STMU units and PIUs

Create CLAB cartridge, units and PIUs

Create TC Rack (TCSA cartridge) and FAN trays

Create GSW units and PIUs (SBMUX)

Create GT4C_A cartridges (for STMU and GSW)

Create TCSM cartridges, units and PIUs

Create the A-interface ET units into the STMU

Connect TR3 to BSC (Create TC-LAPD)

Connect ETs to BSC (Create ET-LAPD)

Change working state of ETs to WO-EX

START

Steps to create the Combi TCSM unit in Master BSC(1/2)




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Run diagnostics

Set the number of through connections if needed

Create the TC-PCMs

Change working state of TCSM to WO-EX

Change working state of TCSM to TE-EX *

Create the through connections if needed

Steps to create the Combi TCSM unit in Master BSC(2/2)

END

*) The TR3 starts downloading its software from the BSC




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Create Master TC Rack (TCSA cartridge)

Create TCSM cartridges, units and PIUs

Connect TR3 to BSC (Create TC-LAPD)

START

Steps to create the Combi TCSM unit in Remote BSC

Run diagnostics

Set the number of through connections if needed

Create the TC-PCMs

Change working state of TCSM to WO-EX

Change working state of TCSM to TE-EX *

Create the through connections if needed

END*) The TR3 starts downloading its software from the BSC

ZWTP:TCSM,512:TR3T,0,2::GENERAL,8,512,TSL,1:REMOTE,8,512,NO;

ZWTP:TCSM,576:TR3T,0,2::GENERAL,8,576,TSL,1:REMOTE,8,576,NO;




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RN2819AEN20GLA016 N okia Siemens Networks

Combi TCSM unit configuration in Remote BSC

< WTI:P:TCSM,512;

EXECUTION STARTED

READING DATA FROM DATABASE ...

TCSM-512 IN LOC 1C002-00

TR3E 0 TRACK: 2

MS: ME: IS: IE:

INT: SW:

TSLS 30 20 10 0

GENERAL 8M PCM: 512 B 00000000000000000000000000000010

R 00000000000000000000000000000010

REMOTE 8M PCM: 512 B 00000000000000000000000000000000

R 00000000000000000000000000000000




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Steps to create TCSM3i hardware in Master BSC

Check ET unit states and configuration

Create Circuit groups on Master BSC

Add circuits to circuit group

Create broadband connection

Check status of line interfaces (SET)

ZUSI; ZWUP

ZRCC

ZRCA

ZRBA

ZRCI

ZRCI

ZRBI

ZUSI:SET;

ZRCC:TYPE=SPE,CGR=20,NCGR=WB75:FORMAT=0,HUNTED=N,:;

ZRCC:TYPE=SPE,CGR=30,NCGR=TCWB75:FORMAT=0,HUNTED=N,:;

ZRCA:CGR=20:CRCT=512-1&&-31:;

ZRCA:CGR=30:CRCT=1665-1&&-31:;

ZRBA:CRCT=512-1:CRCT=1665-1:BW=31:BI:;

START

END




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Steps to create the TCSM2 unit

Create transcoder rack

Create functional unit for ET and TCSM

Create plug-in units for ETs, TR16s and TRCO

Connect ETs and TRCO

Change TCSM working state

Add through connections

no

no

ye s

Start

Create cartridges for ETs and TCSM

Rack exists?

TCSM usedfor CCS7 or X.25

End

yes

Note:

Create one ET plug-in unit for each PCM line connected to the transcoder.

Create two TR16 plug-in units for each A interface PCM line connected to thetranscoder.




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TCSM2 rack and cartridges

ET indexes and tracks: (higher part)

ETs 0 and 1: track 0ETs 2 and 3: track 1ETs 4 and 5: track 2

ETs 6 and 7: track 3

ET indexesand tracks: (lowerpart)

ETs 0 and 1: track 4ETs 2 and 3: track 5ETs 4 and 5: track 6ETs 6 and 7: track 7

Coordinatesof the cartridges

ET 0: nnc 120-01 nn=row ET 1: nnc 120-13 c = rack ET 2: nnc 120-49ET 3: nnc 120-61TC1C 0: nnc 088-01TC1C 1: nnc 088-37TC1C 2: nnc 058-01TC1C 3: nnc 058-37TC1C 4: nnc 030-01TC1C 5: nnc 030-37TC1C 6: nnc 002-01TC1C 7: nnc 002-37

TC1C 0

TCSM2 0

TC1C 1

TCSM2 1

TC1C 2

TCSM2 2

TC1C 3

TCSM2 3

TC1C 4

TCSM2 4

TC1C 5

TCSM2 5

TC1C 6

TCSM2 6

TC1C 7

TCSM2 7

0(TCSM2 0)1(TCSM2 2)

(TCSM2 1)(TCSM2 3)

2(TCSM2 4)3(TCSM2 6)

(TCSM2 5)(TCSM2 7)

POWER INPUT BLOCK

T

RC0

0

T

R16

1

T

R16

2

T

R16

3

T

R16

4

T

R16

5

T

R16

6

T

R16

7

T

R16

8

T

R16

9

T

R16

10

T

R16

11

T

R16

12

T

R16

13

T

R16

14

P

SC1

15tracks:

E

T2E0

ET2E4

E

T2E1

E

T2E2

E

T2E3

ET2E5

ET2E6

ET2E7

tracks:

tracks:

ET1TCTCSM2

TC1C




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Ater Interface in MGW

In GSM networks, transcoding is part of the base station subsystem, while in theWCDMA architecture, the transcoding functionality is specified to be part of thecore network. In the NSN WCDMA solution, transcoding is located in MGW.

As MGW includes the transcoders for WCDMA, the same investment can be usedalso for GSM, as MGW supports the GSM transcoding functionality and the MSSSystem is applicable for both WCDMA and GSM. Therefore, this solution is offeredas an alternative to the current transcoder product for NSN system customers.

In this case, the BSC is integrated to MGW directly with Ater IF, using E1/T1 orSTM-1/OC-3.

All critical TC functions currently provided by NSN 2G transcoder are supported.These functionalities include, for example, TRAU framing, synchronisation, timealignment, multi-rate functionality,

Ater in MGW supports the following voice and data services: GSM transcoding (FR, HR, EFR, AMR, AMR WB) and sub-multiplexing (16/32/64 kbit/s)

speech enhancement features, for example, acoustic echo cancellation (AEC), automatic

level control (ALC) tandem free operation (TFO) for FR, HR, EFR, AMR, and AMR WB codecs

special functions, for example, text telephony (TTY)

the following circuit pools are supported: 1, 3, 5, 7, 10, 13, 20, 21, 22, 23, 28, 32 and 37




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TCSM versus transcoder in MGW MGW does not support the same pool sets as the TCSM3i.

Since there is no O&M link between the BSC and MGW, operations like transcoding

alarm monitoring and SW changes have to be performed in the MGW. Furthermore,

BSC-originated routine testing and diagnostics cannot be used with MGW.

Exactly the same pool configuration have to be created in the BSC and MGW

separately.

No transcoding related hardware have to be created in the BSC.


Administer\ Managing the BSS Transmission\ Configuring a newtranscoder\ Configuring an Ater Interface with the MGW




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Steps to configure Ater on MGW

yes

ET exists?

START

Create ET

ET connected tothe right IF?

Connect ET

yes

no

no

Create TC PCMs

END


Administer\ Managing the BSS Transmission\ Configuring a newtranscoder\ Configuring an Ater Interface with the MGW




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Three layers of CCS7 signalling

M3UA | MTP

MGW

TCSM

BSC

BSSAP

SCCP

MTP

BSSAP

SCCP

M3UA

MSS


Administer\ Common Channel Signalling (MTP, SCCP and TC)

MTP:

Transmits signalling data to a destination. Consists of at least one signalling link, asignalling link set, and a signalling route set.

SCCP:

The SCCP complements the services of the MTP by providing connectionless andconnection-oriented network services.

BSSAP:

Base Station System Application Part consists of BSSMAP (BSS ManagementApplication Part) for messages between the BSC and the MSC, and DTAP (Direct

Transfer Application Part) for messages to and from the mobile station.




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Creating MTP and adding signalling link

Create signalling point code

Create signalling link set including sign. link

Create signalling route set

Allow activation of signalling link

Change signalling link state

Allow activation of signalling route

Change route set state

Create signalling link

YesMTP exists?

Add signalling link to link set

Allow activation of signalling link

Change signalling link state

END

START




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MTP layer

MSS 1

SPC=1234

MGW 1

SPC=1233

BSC

SPC=1223

Signalling Link

Signalling Link Set

Signalling Route Set

MGW 2

SPC=1235

e.g. TS 16

e.g. TS 31

SLC=0

e.g. TS 31

SLC=1

Signalling Link:

A signalling link describes the physical TSL that is used for CCS7 signalling. Thereshould be at least two signalling links between the network elements.

Signalling Link Set:

The signalling link set contains all signalling links between two network elements.The network elements are identified by their own signalling point code (SPC). A linkset can contain up to 16 signalling links. The signalling link code (SLC) is an uniquelink number within the link set that must be equal at both network elements.

Signalling Route Set:

The signalling route set contains the route for a destination SPC with the informationof the next hop called signalling transfer point (STP) . Is also possible to define

alternative routes and to prefer routes. So a route set can be seen as a routing table.

For example: route sets in MGW2

To reach SPC1234 (MSS1) next STP is SPC1234 (MSS1)

or next STP is SPC1233 (MGW1)

To reach SPC1233 (MGW1) next STP is SPC1233 (MGW1)

Between MSS and BSC the configuration is very simple: there is only one route setincluding one link set containing several signalling links.




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Creating of SCCP and the subsystem BSSAP

Create remote SCCP and local Subsystem BSSAP (FE)

Modify broadcast status of SCCP signalling points

Modify local broadcast status of SCCP subsystems

Change local and remote SCCP state

Create local SCCP and local Subsystem BSSAP (FE)

Create service for CONS (10F) and CLNS (208)

Change local and remote Subsystem state

START

END

Local / Remote

The terms local and remote are often used in context with Applications andProtocols. Creation of local applications means to define witch messages from agiven sender are able to receive. Remote applications define witch messages aresent to a given receiver.

Broadcast status

Local:

BSC MSS

affectedconcerned

ZOBC Remote:

BSC MSS

concernedaffected

ZOBM

Info Info


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Creating speech channels

Add circuits to the circuit group

Change the state of the speech circuits

yes

no

Circuit groupexists?

Create a circuit group

START

END




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Speech circuits

BSC NCGR: MSS01

GSWB

FR

FR

FR

TCSMETPCM-512

TCPCM-1

TCPCM-3

TCPCM-2

CCSPCM-0

CCSPCM-1

CCSPCM-2

ET-512

MGW




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Exercise: A interface integration

BSC

SPC=.............

TCSM...... ET.....

MSC

SPC=.............

CCS7 inTSL16

CCS7 in TSL.......Link set=..............SLC=......Sign. network=........

Codec=CCSPCM=......CGR=........

Exercise:

Create the A interface according to the picture above.




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A Interface using SIGTRAN protocol stack

M3UA

IP

SCTP

Ethernet

M3UA

BSSAP

IP

SCTP

Ethernet

SCCP SCCP

BSSAP

BSC MSC

SIGTRANSIGTRAN




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SIGTRAN defines a standardized way of carrying any SS7

signalling over IP networks Defines retransmission and reordering functionalities

Physical layer can be any layer 1 technology

Ethernet/SDH/etc.

IP

SCTP

M3UA

Application

Physical layer

Transport layer

Signallingadaptation

SIGTRAN signallingstack

Applicationcan be

ISUP, BICC,SCCP, etc.

SIGTRAN - Signalling over IP


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Different adaptation layers possible

- M2UA (MTP2 user adaptation layer) - M3UA (MTP3 user adaptation layer)

- SUA (SCCP user adaptation layer)

M3UA supported in the 1st implementation of Rel4

M3UA (MTP3 User Adaptation) provides MTP3 user adaptation forupper layers to use

IP

SCTP

SUA

TCAP

MAP

IP

SCTP

M3UA

SCCP

TCAP

MAP

M3UA MTP3 User Adaptation




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DX200

Association Set (up to 16 associations)

SCTP Association

Signaling Link Set can only contain one "SIGTRAN link".

"SIGTRAN link" consists of one SCTP association set.

Association is identified by the computer unit and destination

address. Only one association allowed per computer unit.

Signalling point B

IP

Signalling point A

MSC (Server) BSC (Client)

CCSU_0

CCSU_1

CCSU_2

CM

SPC_1

BCSU_0

BCSU_1

BCSU_2

MCMU

IP Addresses SPC_2

Addressingbased on

SPCs!

SIGTRAN Terms and Concepts




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RN2819AEN20GLA036 N oki a S ie men s Ne tworks


Each association inside an association set can be in the following states:

SCTP-DOWN

UP - PROCEEDING ASP-DOWN

ASP-INACTIVE

ASP-ACTIVE

Note

Association set is related to NSN distributed architecture, and it is a NSN-specific

concept.




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Steps of creating A-IF SIGTRAN in BSC

1. Create IP network interface for BCSU ( ZQRN)

2. Create an SCTP parameter set for SIGTRAN ( ZOYE)

3. Create an association set ( ZOYC)

4. Add associations to association set ( ZOYA)

5. Configure association IP ( ZOYP)

6. Configure source IP address for SCTP ( ZOYN)

7. Check associations ( ZOYI )

8. Modify associations if needed ( ZOYM)

9. Create Signalling Link Set and IP signalling link ( ZNSP )

10. Create Signalling Route Set ( ZNRC )

11. Allow and activate IP signalling link ( ZNLA&ZNLC )

12. Allow and activate signalling route ( ZNVA & ZNVC )

13. Create SCCP service ( ZNPC )

14. Create local SCCP & Subsystem ( ZNFD )

15. Create remote SCCP & subsystem ( ZNFD )16. Activate Local & Remote SCCP ( ZNGC )

17. Activate Local & Remote SCCP subsystem ( ZNHC )

10 rn2819aen20gla0 a interface integration

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