7-1Lesson 7. TCAP-MAP Layers PE/TRD/CN/UM974 16.02/EN January, 2003

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Lesson 7

TCAP and MAP Layers

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Objectives

Given instructor lecture and appropriate documentation, discuss the TCAP and the MAP layers, including the following information:

• Transaction Capabilities Application Part & Mobile Application Part Layers

– Transaction Portion

– Component Portion

• MAP Layer

– MAP Messages

Given instructor lecture and appropriate documentation, discuss the TCAP and the MAP layers, including the following information:

• Transaction Capabilities Application Part & Mobile Application Part Layers

– Transaction Portion

– Component Portion

• MAP Layer

– MAP Messages

7-3Lesson 7. TCAP-MAP Layers PE/TRD/CN/UM974 16.02/EN January, 2003

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TCAP and MAP Layers

Signaling ConnectionControl Part (SCCP)

Signaling ConnectionControl Part (SCCP)

Radio Access Network

Application Part(RANAP)

Radio Access Network

Application Part(RANAP)

TransactionCapabilitiesApplicationPart (TCAP)

TransactionCapabilitiesApplicationPart (TCAP)

MobileApplication

Part(MAP)

MobileApplication

Part(MAP)

ISDNUserPart

(ISUP)

ISDNUserPart

(ISUP)

MessageTransfer

Part(MTP)

Network

Link

Physical

Base Station Subsystem

Application Part (BSSAP)

Base Station Subsystem

Application Part (BSSAP)

BSSMAPBSSMAP DTAPDTAP

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Topics

The information in this lesson is divided into the following sections:

• Transaction Capabilities Application Part layer

• Mobile Application Part layer

• TCAPTRID table

The information in this lesson is divided into the following sections:

• Transaction Capabilities Application Part layer

• Mobile Application Part layer

• TCAPTRID table

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Application Layer Elements

TCAP provides:

• A set of protocol building blocks upon which new services are defined. Each application does not need to define its own protocol.

• The rules for the “conversation” between applications (i.e., who starts the dialog, who ends the dialog, what gets requested in the dialog, how are errors reported, etc.)

SRI MAP Messages

AE=MAP HLR

ASE Providor

AE=MAP MSC + MAP VLR

ASE Requestor

DMS-MSC DMS-HLR

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TCAP Layer

The transaction portion:• Identify TCAP messages with Transaction ID. • Identify contained components.

to application Userto application User

to SCCP to SCCP

Transaction and Component Portions

Transaction and Component Portions

TCAP Layer

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Transaction Portion Package Types

Begin

End

Abort

Continue

Starts a dialog between two nodes

Continues the dialog (for example, more messages can be sent)

Ends a dialog between two nodes

Terminates the dialog abruptly without transmitting any pending component

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Component Portion Functions

The component portion functions are the following:

• Invoke

Launches an operation.• Result

Returns the result of a successful operation.• Error

Returns the result of a failed operation.• Reject

Indicates the rejection of a received component due to a protocol violation.

The component portion functions are the following:

• Invoke

Launches an operation.• Result

Returns the result of a successful operation.• Error

Returns the result of a failed operation.• Reject

Indicates the rejection of a received component due to a protocol violation.

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Message Format at TCAP Level

F CK SIF SIO LI FIB FSN BIB BSN F

SCCP Information Message Type

MTP Routing Label

MSU

SCCP Message

Optional Part Mandatory Variable Part

Mandatory Fixed Part

Component Componentn 1

Transaction ID

Package Type

TCAP Message

Identify the nature of the TCAP message.

Uniquely id’s the transaction on both nodes.

Transaction Portion

Component Portion

The component portion contains:• no component, 1 component, or more

than 1 component.

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Transaction Example: UL between VLR/HLR

AE = MAP-HLR AE = MAP-VLR

ASE=UL TID=100 TP=begin TC=INVOKE

ASE=ISD TID=100 TP=continue TC=INVOKE

ASE=ISD ACK TID=100 TP=continue TC=Return Result

ASE=UL ACK TID=100 TP=END TC=Return Result

TID= Transaction IDTP = Transaction PortionTC = Transaction component

TID= Transaction IDTP = Transaction PortionTC = Transaction component

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MAP Layer

MTP 1 Layer

DMS-MSC CCN-HLR

MAP

ASE1

ASE2

ASE3

MAP

ASE1

ASE2

ASE3

Physical Message Flow

Application LayerLogical Message Flow

MTP 2 & 3

SCCP

Transaction

Component

TCAP

MTP 2 & 3

SCCP

Transaction

Component

TCAP

MessageTransport &

signaling

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B Interface and MAP Message

Signalling link

Voice trunk

G-interface

D-interface

C-interface

B-interface

F-interface

E-interface

SMS-SC(SSP)

SMS-SC(SSP)

CCN(SSP)CCN(SSP)

VLR(SCP)

VLR(SCP)

CCNHLR

(SCP)

EIR(SCP)

E-interface

C-interface

B-interface MAP messages (09.02)

Activate SSAllocate Handover NumberAttach IMSIAuthenticateComplete CallConnect to Following AddressDeactivate SSDetach IMSIErase SSForward Check SS indicationForward New TMSIForward SS NotificationGet PasswordInterrogate SSInvoke SSPageProcess Access RequestProcess Call WaitingProcess Unstructured SS DataProvide IMSIRegister IMSIRegister PasswordRegister SSSearch for Mobile SubSend Handover ReportSend Info Ic CallSend Info Og CallSet Ciphering ModeTrace Subscriber ActivityUpdate Location Area

G CCN(SSP)

G CCN(SSP)

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C Interface and MAP Message

Signalling link

Voice trunk

G-interface

D-interface

C-interface

B-interface

F-interface

E-interface

SMS-SC(SSP)

SMS-SC(SSP)

CCN(SSP)CCN(SSP)

VLR(SCP)

CCN-HLR

(SCP)

EIR(SCP)

E-interface

C-interface

C-interface MAP messages (09.02)

Alert Service CenterRegister Changing InformationSend Routing InformationSend Routing Information for SMSend Routing Information AckSet Message Waiting Data

VLR(SCP)

GCCN(SSP)GCCN(SSP)

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D Interface and MAP Message

Signalling link

Voice trunk

G-interface

D-interface

C-interface

B-interface

F-interface

E-interface

SMS-SC(SSP)

SMS-SC(SSP)

CCN(SSP)CCN(SSP)

VLR(SCP)

VLR(SCP)

CCN-HLR

(SCP)

EIR(SCP)

E-interface

C-interface

D-interface MAP messages (09.02)

Activate SSActivate Trace ModeBegin Subscriber ActivityCancel LocationDeactivate SSDeactivate Trace ModeDelete Subscriber DataDeregister Mobile SubscriberErase SSForward Check SS IndicationForward SS NotificationGet PasswordInsert Subscriber DataInterrogate SSNote MS PresentProcess Unstructured SS DataProvide Roaming NumberRegister PasswordRegister SSReset

GCCN(SSP)GCCN(SSP)

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E Interface and MAP Message

Signalling link

Voice trunk

G-interface

D-interface

C-interface

B-interface

F-interface

E-interface

SMS-SC(SSP)

SMS-SC(SSP)

CCN(SSP)CCN(SSP)

VLR(SCP)

VLR(SCP)

CCN-HLR

(SCP)

EIR(SCP)

E-interface

C-interface

E-interface MAP messages (09.02)

Forward Access SignalingForward Short MessageNote Internal MessagePerform HandoverPerform Subsequent HandoverProcess Access SignalingSend End SignalTrace Subscriber Activity

GCCN(SSP)GCCN(SSP)

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F/G Interface and MAP Message

Signalling link

Voice trunk

G-interface

D-interface

C-interface

B-interface

F-interface

E-interface

SMS-SC(SSP)

SMS-SC(SSP)

GCCN(SSP)GCCN(SSP)

CCN(SSP)CCN(SSP)

VLR(SCP)

VLR(SCP)

CCN HLR

(SCP)

EIR(SCP)

E-interface

C-interface F-interface MAP messages (09.02)

Check IMEI

G-interface MAP messages (09.02)

Send Parameters

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7-18Lesson 7. TCAP-MAP Layers PE/TRD/CN/UM974 16.02/EN January, 2003

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Table TCAPTRID

Table TCAPTRID

TCAPAPPL NUMTRIDS NUMCOMPS IDPLUSER

MAPHLR 200 500 N

MAPVLR 250 500 N

MAPMSC 200 500 N

INAP 200 250 N

Table TCAPTRID is a default table.