camell applications

7/27/2019 Camell Applications

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The CAMEL Story

An Introduction

Li Jian

MND ASB

Tel.: 58368000-3217


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Overview

What is CAMEL?

Intelligent Network Basic Concepts

Why CAMEL?

Major Implications of CAMEL

CAMEL Phases 1, 2, and 3


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What is CAMEL? CAMEL Basics

CAMEL = 'Customized Applications for Mobile Enhanced Logic'

The CAMEL Tool Set specifies

capabilities to be offered by the SSF

functions and state models running in the SSF

operations between SSF, SCF, HLR, VLR

CAMEL is not

a service or an application

a specification of SCP/CSE capabilities and functions

CSE CAMEL Service Environme

SCF Service Control Function

SCP Service Control Point

SSF Service Switching Function


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What is CAMEL? CAMEL (ph1) Architecture

gsmSCF

gsmSSFgsmSSF

CAP

MAP

MAP

Incoming

Line

Roaming

Leg

MS

VLR

HLR

GMSC MSC

Home Network

InterrogatingNetwork

Visited Network

MOC or

Late Call ForwardingEarly Call Forwarding

CAP CAMEL Application Protocol

GMSC Gateway MSC

gsmSCF GSM Service Control Function

gsmSSF GSM Service Switching Function

HLR Home Location Register

MAP Mobile Application Part

MOC Mobile Originated Call

MS Mobile Station

MSC Mobile Switching Center

VLR Visitor Location Register


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Intelligent Network Basic Concepts Basic Call State Model

Purpose: Synchronization of two points of view

Service Logic on SCP

Call Handling on SSP

BCSM Components

Entry Events

Detection Points: Trigger & Event DPs

Points in Call PIC

Exit Events

BCSMs for MOC, MTC, SMS, GPRS, ...

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

DP Detection Point

GPRS General Packet Radio Service

MOC Mobile Originating Call

MTC Mobile Terminating Call


SMS Short Message Service

SSP Service Switching Point

Point in Call

DP

Transition


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Why CAMEL? Features and More

Standardized Intelligent Network Environment

for PLMNs

Multi Vendor Networks

Roaming outside the HPLMN

Roaming of Foreign IN Customers

Location Dependent Services

Virtual Home Environment (CAMEL3, UMTS)

HPLMN Home PLMN

PLMN Public Land Mobile Network

SMG Special Mobile Group

UMTS Universal Mobile Telecommunication System


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Major Implications of CAMEL Mobile Application Part MAP Version 3

Interworking Signaling between MSC, HLR,

VLR, and SCP

MAP v3 supports CAMEL procedures and

mechanisms (dependent on CAMEL phase)

CAMEL Subscription Information (Trigger)

Interrogation

Location Information Retrieval

Subscriber Status Retrieval

USSD dialogues on HLR-SCP I/F ph2

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF





USSD Unstructured Supplementary Service Data



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Major Implications of CAMEL CAMEL Application Protocol CAP

MO Mobile Originating

MT Mobile Terminating


SSP Service Switching Point

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

Interworking Signaling between SSP and SCP

CAP operations are used to control various call

scenarios (dependent on CAMEL phase)

Mobile Originating Call MOC ph1

Mobile Terminating Calls MTC ph1

Call Forwarding CF ph2

Charging, Announcements ph2

ShortMessageService MO MT ph3

General Packet Radio Service ph3

Dialled Services ph3


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Major Implications of CAMEL Trigger (1)

Introduction of CAMEL Subscription Information

Stored in HLR Subscriber Data

Contents of CSI (O-CSI, T-CSI) gsmSCF Address

Service Key

Default Call Handling

TDP List, one of {DP2, DP12}

DP Criteria ph2

CAMEL Capability ph2

CSI State ph3

Notification Flag ph3

O-CSI Originating CSI

T-CSI Terminating CSI

CSI CAMEL Subscription Information

TDP Trigger Detection Point


VMSC Visited Mobile Switching Center

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF


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Major Implications of CAMEL Trigger (2)

Introduction of CAMEL Subscription Information

CAMEL ph1: O-CSI

T-CSI

CAMEL ph2: U-CSI

UG-CSISS-CSI

TIF-CSI

CAMEL ph3: SMS-CSI

GPRS-CSI

M-CSI

VT-CSI

D-CSI

N-CSI

D-CSI Dialled Service CSI

GPRS-CSI General Packet Radio Service CSI

M-CSI Mobility Management CSI

N-CSI Network CSI

O-CSI Originating CSI

SMS-CSI Short Message Service CSI

SS-CSI Supplementary Service CSI

T-CSI Terminating CSI

TIF-CSI Translation Information Flag CSI

U-CSI USSD CSIUG-CSI USSD General CSI

VT-CSI VMSC Terminating CSI

CSI CAMEL Subscription Information



VMSC Visited Mobile Switching Center

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF


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CAMEL phase 1


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CAMEL phase 1 Features

Mobile Originated, Terminated,

and Forwarded Calls

Number Translation Support

Suppression of Announcements

Forwarding Services

Barring Services

Location Information Retrieval

Subscriber Status Retrieval


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CAMEL phase 1 CAP & MAP Operations

CAP

IDP Initial DP

CON Connect

CUE Continue

RC ReleaseCall

RRB RequestReportBCSMEvent

ERB EventReportBCSM

AT Activity Test

MAP

ATI AnyTimeInterrogation

PSI ProvideSubscriberInformation



VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF


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CAMEL phase 1 Originating Basic Call State Model

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

Collected_Info

O_Null & ...

Analyze &

Routing &

Alerting

DP 2

O_Active

DP 7

O_Exception

DP 9

O_AnswerO_Disconnect

O_failure

O_active_failure

Point in Call

DP

Transition


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CAMEL phase 1 Detection Points O-BCSM

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

O_Null & ...

Analyze &

Routing &

Alerting

DP 2

O_Active

DP 7

O_Exception

DP 9

DP2 Collected_Info TDP-R

O-CSI analyzed

DP7 O_Answer EDP-N

call accepted and answered

DP9 O_Disconnect EDP-N/R

one call party hangs up

BCSM Basic Call State Model

EDP Event Detection Point


- N Notification Mode

- R Request Mode


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CAMEL phase 1 Mobile Originated Call MOC

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

CAP

MS

MOC

Home Network

InterrogatingNetwork Visited Network





O-CSI


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CAMEL phase 1 Terminating Basic Call State Model

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

Point in Call

DP

Transition

Terminating_Attempt_Authorized

T_Null

Terminating Call

Handling

DP 12

T_Active

DP 15

T_Exception

DP 17

T_AnswerT_Disconnect

T_call_handling_failure

T_active_failure


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CAMEL phase 1 Detection Points T-BCSM

DP12 Term._Attempt_Authorized TDP-R

T-CSI analyzed

DP15 T_Answer EDP-N


DP17 T_Disconnect EDP-N/R





- R Request Mode

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

T_Null

Terminating Call

Handling

DP 12

T_Active

DP 15

T_Exception

DP 17


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CAMEL phase 1 Mobile Terminated Call MTC

VLR

HLR gsmSCF

GMSC

gsmSSF

MSC

gsmSSF

CAPMAP

Incoming

Line

Roaming

Leg

MS

Home Network



GMSC Gateway MSC






MS Mobile Station

MSRN Mobile Station RoamingNumber

2Step Interrogation

Call Forwarding (Early & Late CF)

Suppression of Announcements SoA


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CAMEL phase 1 MTC 2Step Interrogation (1)

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

CAP

Incoming

Line

MS

Home Network


MAP

SRI(1)

PSI

PRN

T-CSI


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gsmSSF

CAMEL phase 1 MTC 2Step Interrogation (2)

VLR

HLR gsmSCF

GMSC MSC

gsmSSF

CAPHome Network


MSRoaming

Leg

PRNMAP

SRI(2)


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VLR

CAMEL phase 1 AnyTimeInterrogation

HLR gsmSCF

GMSC

gsmSSF

MSC

gsmSSF

MAP:ATI

Home Network


ATI AnyTimeInterrogation




PSI ProvideSubscriberInfo


MAP:PSIati_psi: 0/1


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gsmSSF

CAMEL phase 1 Early Call Forwarding


CFu Call Forwarding Unconditional

GMSC Gateway MSC






MS Mobile Station


VLR

HLR

gsmSCF

gsmSCF

GMSC MSC

gsmSSFgsmSSF

MAP

Incoming

Line

MS

Home Network


Early Call Forwarding

CAP

MT Service Logic

MO Service Logic

O-CSI

T-CSI

CFu!


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CAMEL phase 1 Late Call Forwarding


CFc Call Forw.Cond. (Busy, NoAnswer,..)

GMSC Gateway MSC






MS Mobile Station


VLR

HLR

gsmSCF

gsmSCF

GMSC MSC

gsmSSFgsmSSF

MT Service Logic

CAP

Incoming

Line

Roaming

Leg

MS

MO Service Logic

Late Call Forwarding

Home Network

Interrogating

Network

Visited Network

MAP

T-CSI O-CSICFc!


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CAMEL phase 2


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CAMEL phase 2 Additional Features

Charging

Announcements and User Interaction

Conditional Triggers

Follow On Calls

USSD Interaction with gsmSCF

User to Service Logic (User Initiated)

Service Logic to User (Network Initiated)

Embedded


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VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

CAP

MAP

MAP

Incoming

LineRoaming

Leg

MS

MOC or


Home Network

Interrogating

Network

Visited Network


CAP CAMEL Application Part

GMSC Gateway MSC


gsmSRF GSM Specialized Resource Function




MS Mobile Station



CAMEL phase 2 Architecture

gsmSRF


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CAMEL phase 2 Originating Basic Call State Model

Point in Call

DP

Transition

Collected_Info

O_Null & ...

Routing &

Alerting

DP 2

O_Active

DP 7

O_Exception

DP 9


DP 10

O_Abandon

DP 4 Route_Select_Failure

DP 5 O_Busy

DP 6 O_No_Answer

O_routing_and_alerting_failure

O_active_failure

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF gsmSRF


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CAMEL phase 2 Detection Points O-BCSM

DP2 Collected_Info TDP-R

O-CSI analyzed

DP4 Route_Select_Failure EDP-N/R

call establishment failed

DP5 O_Busy EDP-N/R

term. party busy or not reachable

DP6 O_No_Answer EDP-N/R

No_Answer Timer expired

DP7 O_Answer EDP-N/R


DP9 O_Disconnect EDP-N/R


DP10 O_Abandon EDP-N

orig. party disc. during call establ.




- R Request Mode

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF gsmSRF

O_Null & ...

Routing &

Alerting

DP 2

O_Active

DP 7

DP 4

DP 5

DP 6

DP 10 O_Exception

DP 9


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CAMEL phase 2 Terminating Basic Call State Model

Point in Call

DP

Transition

Terminating_Attempt_Authorized

T_Null

Terminating Call

Handling

DP 12

T_Active

DP 15

T_Exception

DP 17


DP 18

T_Abandon

DP 13 T_Busy

DP 14 T_No_Answer


T_active_failure

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF gsmSRF


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CAMEL phase 2 Detection Points T-BCSM

DP12 Term._Attempt_Authorized TDP-R

T-CSI analyzed

DP13 T_Busy EDP-N/R

term. party busy or not reachable

DP14 T_No_Answer EDP-N/R

No-answer timer expired

DP15 T_Answer EDP-N/R


DP17 T_Disconnect EDP-N/R one call party hangs up

DP18 T_Abandon EDP-N

orig. party disc. during call establishment




- R Request Mode

T_Null

Terminating Call

Handling

DP 12

T_Active

DP 15

DP 13

DP 14

DP 18 T_Exception

DP 17

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF gsmSRF


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CAMEL phase 2 CAP Operations

Basic Operations

Initial DP

Cancel

Connect

Continue

ReleaseCall Activity Test

Reset Timer

Requests and Reports

RequestReportBCSMEvent EventReportBCSM

CallInformationRequest

CallInformationReport

Charging Operations

ApplyCharging

ApplyChargingReport

SendChargingInformation

FurnishChargingInformation

IP and SRF Operations

ConnectToResource

DisconnectForwardConnection

EstablishTemporaryConnection

AssistRequestInstructions PlayAnnouncement

SpecializedResourceReport

PromptAndCollectUserInformation


IP Intelligent Peripheral

SRF SpecializedResourceFunction


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CAMEL phase 2 MAP Operations

Basic Operations

AnyTimeInterrogation

ProvideSubscriberInformation

SS Invocation Notification

SSInvocationNotification

MAP USSD phase 1

ProcessUnstructuredSSData

MAP USSD phase 2

ProcessUnstructuredSSRequest

UnstructuredSSRequest

UnstructuredSSNotify


SS Supplementary Service

USSD Unstructured SupplementaryService Data


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gsmSSF

CAMEL phase 2 Location Update



MS Mobile Station


VLR

HLR gsmSCF

GMSC MSC

gsmSSF

MAP

MS

Home Network

Visited NetworkInterrogating

Network

VLR indicates to HLR its supported CAMEL phases

HLR sends to VLR

subscription data according VLR CAMEL phase

gsmSRFO-CSI


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CAMEL phase 2 Mobile Originated Call MOC

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

CAP

MS

MOC

Home Network

Interrogating

Network

Visited Network





SSP indicates to SCP its supported CAMEL phases

SCP answers according SSP CAMEL phase

gsmSRFO-CSI


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CAMEL phase 3


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CAMEL phase 3

Additional Features Dialled Services

GPRS Interworking

SMS MO Interworking (CS & PO)

Notification on Location Change

T-BCSM in both GMSC and VMSC

Congestion Control (Call Gap)


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VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF

CAP

MAP

MAP

Incoming

Line

Roaming

Leg

MS

MOC or


Home Network

Interrogating

Network

Visited Network


CAP CAMEL Application Part

GMSC Gateway MSC


gsmSRF GSM Specialized Resource Function




MS Mobile Station



CAMEL phase 3 Architecture Circuit Switched

SMSC

gsmSRF


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CAMEL phase 3

Originating Basic Call State Model

Collected_InfoDP 2

O_Null & ...

Routing &

Alerting

O_Active

DP 7

DP 4

DP 5

DP 6

DP 10 O_Exception

DP 9


O_Abandon

Route_Select_Failure

O_Busy

O_No_Answer

O_routing_and_alerting_failure

O_active_failure

Point in Call

DP

Transition

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF gsmSRF

Analyze_Information

DP 3 Analyzed_Info

Invalid_Information


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CAMEL phase 3

Terminating Basic Call State Model

Point in Call

DP

Transition

Terminating_At-tempt_Authorized

T_Null

Terminating Call

Handling

DP 12

T_Active

DP 15

DP 13

DP 14

DP 18 T_Exception

DP 17


T_Abandon

T_Busy

T_No_Answer


T_active_failure

VLR

HLR gsmSCF

GMSC MSC

gsmSSFgsmSSF gsmSRF


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CAMEL phase 3 Architecture Packet Oriented

HLR gsmSCF

SGSN

gprsSSF

CAP

MAP

MS

MO

Home Network

Interrogating

Network

Visited Network


GPRS General Packet Radio Service

gprsSSF GPRS Service Switching Function


GSN GPRS Support Node



MS Mobile Station

SGSN Serving GSN

SMSC Short Mess.Serv.Center

SMSC

MAP

General Packet Radio Service

Short Message Service MO

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