TK301.pdf

TK301v4.2 TEKELEC Confidential – For Training Purposes Only 1

TK301EAGLE 5 ISS Release 40.1/EPAP Release 12.0

HLR Router for GSM (G-Flex)


2

Table of Contents

Module #1 Basic GSM Network…..………………….………..5

Module #2 G-Flex Architecture…………….………….……..27Lesson 1 G-Flex HLR Manager………………………….......29Lesson 2 G-Flex Call Flow Update Location Messages......39Lesson 3 G-Flex Call Flow SRI Messages……………........65

Module #3 G-Flex Configuration…………………………….81

Module #4 Optional Features.………………………….........99


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Course InstructorCourse Attendance and Participation

• Certificate of course completionClass Time and Breaks

• Start and end• Lunch• Stretch, refreshment, etc.

Classmates• Tent card• Name, company, position• Background / experience

Security• Laboratory• Building

Course Logistics


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In this guide, you will find the following structure: Large units of learning are called Modules.

• A Module is divided into smaller units of learning called Lessons.

Each Module consists of:• Objectives for the entire module (aggregate of all lessons)• One or more lessons

Each Lesson consists of:• Lesson Objectives• Presentation and Lecture• Check-Your-Learning review questions• Hands-on Learning Activities (most lessons)

Student Guide Layout


Basic GSM Network

Module #1:


6

This module contains the following objectives:Identify and interpret basic GSM terminology

Identify the purpose, function and contents of Number Plans and Nature of Address Indicator

Review Simplified Call Flows without G-Flex

Module #1


7

Basic GSM Knowledge

Basic GSM Knowledge


8

IMSI and MSISDN

The IMSI number is the unique number of the SIM card given by an operator to a customer during subscriptionThe MSISDN is a unique number of a mobile device associated to an IMSI number

• An IMSI number can be associated to either one or several MSISDNs

HLR

An HLR stores IMSI numbers and their associated MSISDN numbers

The HLR also contains subscriber profile information and the number of the last VLR

where this subscriber was


9

Numbering Plan (NP)

The numbering plan value in the MSU is used to indicate how a number is structured

Like GTT, the G-Flex feature basically works with the information contained in the CdPA at the SCCP level

• In ITU, the NP field is used to understand the structure of the GTA of the CdPA


10

Numbering Plan (NP)

In ITU, there are three kinds of Numbering Plans:• E.212• E.164• E.214

Depending on the type of transactions being exchanged between the two SS7 nodes and the configuration of the nodes, the appropriate NP is then selected


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Numbering Plan (NP)

E.212: This is the IMSI Numbering Plan

E.164: This is the MSISDN Numbering PlanCC NDC SN

National (Significant) Number1 to 3

Maximum of 15 Digits

E.164 (International)

MCC MNC MSIN

National MSI

1 to 3



1 to 4

E.212:• MCC stands for Mobile Country Code (uniquely identifies the country of the subscriber)• MNC stands for Mobile Network Code (identifies the home GSM PLMN (Public Land Mobil Network) of the subscriber)• MSIN stands for Mobile Subscriber Identification Number (identifies the mobile subscriber within the GSM PLMN)

E.164:• CC stands for Country Code (uniquely identifies the country of the subscriber)• NDC stands for Network Destination Code (area identifier for an operator)• SN stands for Subscriber Number


12

Numbering Plan (NP)

E.214 numbering plan is called the Roaming IMSI• It is a mixture of the numbering plans E.164 and E.212

CC NC MSIN

E.2121 to 3



E.164


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Numbering Plan (NP)

E.214 numbering plan is used to route the IMSI mobile subscriber number when the destination address is not known

In ITU network, all nodes have an E.164 number so the beginning of an E.214 number is used for routing because it has an E.164 format

E.214 format is used on ITU networks for the Update Location MAP messages because, for this type of transaction only, the IMSI is known and the destination is unknown (so an E.164 number can’t be used to address a destination node)


14

Numbering Plan (NP)

E.214 converted example using E.164 and E.212 information

- E.164 information example» CC = 99 (Country identifier)» NDC = 70 (Geographical area identifier)» SN = 22222222222 (Subscriber Number)

- E.212 information example» MCC = 888 (Country identifier)» MNC = 01 (Network operator identifier)» MSIN = 1111111111 (Mobile Subscriber)

- E.214 international converted using previous information» 99 70 1111111111 (CC + NDC + MSIN)

CC + NDC information is used for routing by SS7 nodes


15

Nature Address Indicator (NAI)

The Nature Address Indicator value in the MSU is used to indicate how a number is formatted

As for GTT, the G-Flex feature basically works with the information contained in the CdPA of the SCCP level

• In ITU, the NAI field is used to understand the format of the GTA of the CdPA


16


In ITU, there are three types of NAI:• International• National• Subscriber

Depending on the level of transaction exchanged between two SS7 nodes and the configuration of the nodes, the appropriate NAI is then selected


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E.164• CC + NDC + SN (International)

- 99 70 22222222222

• NDC + SN (National)- 70 22222222222

• SN (Subscriber)- 22222222222


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E.212• MCC + MNC + MSIN (International)

- 888 01 1111111111

• MNC + MSIN (National)- 01 1111111111

• MSIN (Subscriber)- 1111111111

E.214• CC + NDC + MSIN (International)

- 99 70 1111111111

• NDC + SN (National)- 70 1111111111

• SN (Subscriber)- 1111111111


19

HLR Routing without G-Flex

HLR Routing & STP Configuration without G-Flex


20

Typical HLR Routing

Typical HLR Routing is addressed by GTT from STPs

Standard GTT can have a lack of flexibility when, for example:

• Some subscribers’ data has to be moved from one HLR to another

• Some subscribers have been ported out so some gaps will be left in the HLR which can not be filled; therefore, maximum HLR capacity can not be used (will be less than 100%)


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Typical HLR Routing

For example: in case some new HLRs (HLR1, HLR2) with higher capacity are purchased, this could result in a reduction in the number of HLRs required. This would then require a redistribution of data from HLR3 to HLR1 and HLR2

GTT tables need to be modified to move the GTT result Point Code for all MSISDN previously stored in HLR3 to HLR1 and HLR2

STP

MSC

HLR 3HLR 2HLR 1

New HLRs Old HLR


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Typical HLR Routing

If some subscribers have been ported out, some gaps will remain in the HLR which then can not be filled to 100% capacity

• GTT tables need to be modified to delete those ported MSISDNs• Possibly a range of GTT has to be split to exclude those MSISDNs ported out, and GTT capacity could therefore quickly run out• The gap(s) created can not then be filled totally, which means the HLR can not be filled to 100% capacity

STP

MSC

HLR 1HLR 2HLR 1

Operator 1 Operator 2


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Learning Activities

Learning Activity: Module 1

Learning Activity: Define your network designPurpose

•To design a base line network without G-Flex routing.

Objective•After completing this exercise, students will set up a basic example of their network and define the basic characteristics and call flows of their local network without G-Flex.

Materials, Equipment, and References• Note Paper• Pencil



Instructions:

• Use the following nodes to draw a small sample of your SS7 Network:

• MSC or GMSC or MSC/VLR

• HLR

• STP

• Identify the following1. Numbering Plan2. Nature of Address Indicator3. Data Requirements (MSISDN, IMSI, etc)

• When completed, STOP and allow the instructor to verify your work.

STP

MSC

HLR


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Check Your Learning: Module 1

Answer the questions to the best of your ability.We will review all answers as a group.



1. The ___________________________ number is the unique number of the SIM card given by an operator to a customer during subscription.

2. The ___________________________ is the unique number of a mobilephone associated to an IMSI number.

3. What is the purpose of the numbering plan?

__________________________________________________________

__________________________________________________________

4. E.212 is the _________________________ Numbering Plan.

5. E.164 is the _______________________ Numbering Plan.

6. E.214 is the _________________________________ Numbering Plan.

7. The E.214 numbering plan is used to _____________________________________________________________________________________________________________.

8. The E.214 format is mostly used on ITU networks for _________________________________ MAP Messages.

9. Name three types of Nature of Address Indicator (NAI).

1. ___________________________________

2. ___________________________________

3. ___________________________________


GSM Flexible Numbering (G-Flex) Architecture

Module #2:


28

This Module contains the following lessons: Lesson 1 GSM Flexible Numbering (G-Flex) HLR Manager

Lesson 2 G-Flex Call Flow Update Location

Lesson 3 G-Flex Call Flow Send Routing Information (SRI)

Module # 2


GSM Flexible Numbering(G-Flex)

HLR Manager

Module #2Lesson #1


30

This lesson contains the following objectives:Define the purpose and functions of the G-Flex feature

Define how the G-Flex node is deployed within the GSM network

Analyze which Message Signaling Units (MSU) are affected by G-Flex

Module 2: Lesson 1


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G-Flex HLR Manager

G-Flex maintains a database with entries that map a subscriber to an HLR

The database is constructed using IMSI or MSISDN

G-Flex intercepts SCCP messages destined for HLRs and performs database lookup to identify the HLR serving the subscriber


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G-Flex HLR Manager

G-Flex basically represents an enhanced Global Title Translation, analyzing all digits in the Called Party address, which allows the flexible routing of an E.164 or E.212/E.214 addressed SCCP message to an HLR


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G-Flex Architecture

G-Flex can be deployed as a standalone node

STP

MSC

HLR 2HLR 1 HLR 3

STP

G-Flex G-Flex

•When an MSU destined to an HLR arrives to the STPs, it is routed to the G-Flex node per GTT process•The G-Flex node finds the Point Code of the HLR and sends the MSU back to the STPs which MTP3 route the MSU to the found HLR


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G-Flex Architecture

G-Flex can be deployed along with an STP which is the most common solution chosen

STP/G-Flex

MSC

HLR 2HLR 1 HLR 3

STP/G-Flex


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Which MSU are Concerned by G-Flex

G-Flex can be triggered for all MSUs destined to an HLR

As an HLR receives MSUs with the MAP protocol, only MAP protocol is affected by G-Flex

G-Flex is commonly used for the MAP Update Location transactions when the Mobile Number Portability is used within a country


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Check Your Learning: Module 2 – Lesson 1




1. The G-Flex database contains:

_____________________________

____________________________

2. The G-Flex process performs database lookups of SCCP messages destined for HLRs. Why?

3. The G-Flex can be deployed as a____________________________ node or along with an _________________________ node.

4. Which G-Flex deployment is most common?

5. G-Flex can not be triggered for all MSUs destined to an HLR.

TRUE FALSE

6. What type of message transaction is G-Flex commonly used for?


Student Notes


G-Flex Call Flow Update Location Messages

Module #2Lesson #2


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This lesson contains the following objectives:Identify purpose and function of the Update Location message

Analyze and interpret call flows using Update Location Messages and how these messages are processed by the G-Flex feature

Analyze and interpret how an EAGLE extracts data from the Update Location MSU and uses that data for G-Flex processing

Module 2: Lesson 2


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Update Location MAP Message

An Update Location is a Map Operation initiated by a VLR to an HLR to retrieve information about a mobile

When a mobile is detected in the area managed by a VLR, this VLR needs to contact the home HLR of this mobile before allowing it to attach to its own network


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A VLR could be located on the same node as an MSC or could be located on a separate node

The initial information a VLR has is the IMSI. The VLR converts the IMSI into an E.214 number when initializing the Update Location Message.


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Country A Country B

123645

1- Update Location

MSC/VLR

MSC/VLR

HLR2- Insert Subscriber Data

6- Update Location Ack5- Cancel Location Ack4- Cancel Location3- Insert Subscriber Data Ack


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This E.214 roaming number of the mobile is put in the CdPA of the Update Location message

At this stage, the VLR does not know which HLR needs to be requested for subscriber information about the roaming subscriber


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With the CC of the E.214 number, the Update Location message can be routed to the corresponding country

The VLR puts its own E.164 number in the CgPA of the Update Location message to enable it to receive the answer back from the roaming subscriber’s home HLR


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G-Flex Call Flow

An example of the two first transactions of an Update Location MAP message on ITU network

STPG-Flex

VLR

HLR

SS7 Network

Network 1Network 2

MSISDN = 997022222222222IMSI = 888011111111111

E164 = 336644444444444 E164 = 99700000PC = 2000


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G-Flex Call Flow: VLR to G-Flex

E214 Number: 99701111111111

MSU sent by the VLR to the STP

SSN=6TT=0

NP=E214NAI=INTL

Digit 1=9

ES=BCD

Digit 2=9Digit 3=7Digit 4=0Digit 5=1Digit 6=1Digit 7=1Digit 8=…

NI=0 RI=0 GTI=4 SSN=1PC=0

CgPA CdPASCCP Fields

… … GTT is required

STPG-FlexVLR

An HLR is requested

TRANSMISSION DIRECTION

•CgPA contain the VLR information as its SSN and its E164 number to be able to receive the answer from the HLR


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G-Flex Call Flow: Service Selector Table

As GTT is requested, this MSU arrives at the EAGLE Database Module.

• The service selector table is first looked up

no

MSU in from IMT

MSU out to IMT

EAGLE Database Module

Service Selector Table

yes

GTT

G-Flex conditioning and lookup into RTDB table

No matchUse lookupresults

• Remeber, the EAGLE Database Module can be either a DSM or E5-SM4G card.


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G-Flex Call Flow: G-Flex Triggered

Fields extracted from the CdPA by the EAGLE

SSN=6TT=0

NP=E214NAI=INTL

Digit 1=9Digit 2=9Digit 3=7Digit 4=0Digit 5=1Digit 6=1Digit 7=1Digit 8=…


ES=BCD

Parameters extracted from

the CdPA to find a match in

Service Selectors Table

Service Selectors Table contains:

…

GTIN=4:SSN=6:TT=0: NP=E214: NAI=INTL:SERV=GFLEX

…

G-Flex is triggered

•Because the ES field is used by the EAGLE internally, this parameter does not have to be filled during the configuration.


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G-Flex Call Flow: Number Conditioning

G-Flex service has been triggered• The GTA number is conditioned if needed before RTDB

lookup

no

MSU in from IMT

MSU out to IMT



yes

GTT




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SSN=6TT=0

NP=E214NAI=INTL



ES=BCDGTA Number extracted from the CdPA to perform a

RTDB lookup


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From the NP and NAI fields previously extracted, the G-Flex service will know how to condition the GTA number

• The GTA number is converted to international format, if it is not already in that format, as the RTDB contains only international numbers

• The E.214 Numbering Plan is converted to E.212 because the numbers stored in the RTDB are stored in E.212 format (never E.214)

- E214 -> E212- 99701111111111 -> 888011111111111


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G-Flex Call Flow: RTDB Lookup

After number conditioning, the RTDB lookup is performed to try to find the converted E.212 number

RTDB Database contains:…IMSI 888011111111111, DPC 2000 RI:SSN…

EAGLE Database Card

RTDB

Results information used to modify fields of the MSU before to route it to the next node

•If the IMSI is not found within the RTDB IMSI table, this message will fall through to regular GTT.


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G-Flex Call Flow: G-Flex to HLR Routing

MSU routed by the STP to the HLR

SSN=6TT=0

NP=E214NAI=INTL

Digit 1=9

ES=BCD



CdPASCCP Fields

… …TRANSMISSION DIRECTION

STPG-Flex HLR

DPC=2000 …MTP3 Fields

…


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G-Flex Call Flow: HLR to STP Routing


SSN=7TT=0

NP=E164NAI=INTL

Digit 1=3

ES=BCD



CdPASCCP Fields

…TRANSMISSION DIRECTION

STPG-FlexHLR

…GTT is required

VLR is requested

•The HLR looks up the requested information about this subscriber and answers back (Update Location Ack) to the VLR by inverting CdPA and CgPA


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G-Flex Call Flow: STP Routing to Next Node

As GTT is requested, this MSU arrives at the EAGLE Database Module


no

MSU in from IMT

MSU out to IMT



yes

GTT




57

G-Flex Call Flow : STP Routing to Next Node


SSN=7TT=0

NP=E164NAI=INTL



ES=BCD





…


…

No match found with the extracted parameters

•Because the ES field is used by the EAGLE internally, this parameter does not have to be filled during the configuration


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MSU fall through GTT

no

MSU in from IMT

MSU out to IMT



yes

GTT




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SSN=7TT=0

NP=E164NAI=INTL



ES=BCD


the CdPA to find a GTT Selector in the GTTSEL

Table

GTTSEL Table contains:

…

GTIN=4:TT=0: NP=E214: NAI=INTL:GTTSN=E164INTL

…

A match is found, the table E164INTL has to be looked up

•Because the ES field is used by the EAGLE internally, this parameter does not have to be filled during the configuration


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SSN=6TT=0

NP=E214NAI=INTL




lookup into the GTA Table


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E164 INTL table is looked up to find the GTA (E164 number of the VLR)

E164INTL Table contains:…GTA: 336644444444444 DPC: 1000 RI:GT…

EAGLE Database Card

E164INTL



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MSU routed by the STP to the Next Node SSN=7

TT=0NP=E164

NAI=INTLDigit 1=3

ES=BCD



CdPASCCP Fields


STPG-Flex


…

Next Node


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1. Update Location is a ____________________________________________ initiated by a _________________________ to an _____________________ to retrieve information about a mobile device.

2. The initial information that a VLR has about a mobile is its Roaming IMSI (E.212) number.

TRUE FALSE

3. When the Update Location message reaches an EAGLE with G-Flex, the ______________________________ table is the first table this message is sent to.

4. What data is extracted from the SCCP CdPA for the purpose of matching contents within the EAGLE’s selector table?

1. __________________________________2. __________________________________3. __________________________________4. __________________________________ 5. __________________________________

5. If the GTA needs number conditioning, what two fields previously extracted from the MSU will identify how to condition the GTA?

1. _______________________________2. _______________________________

6. After number conditioning, the RTDB lookup is performed to try to find the E.212 number.

TRUE FALSE

7. What can cause the Location Update message to be processed by regular GTT?_______________________________________________________

8. When a match is found within the Service Selector Table and the RTDB, the Location Update message will be sent to the _______________________________.


G-Flex Call Flow Send Routing Information (SRI)

Messages

Module #2Lesson #3


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This lesson contains the following objectives:Identify purpose and function of the Send Routing Information (SRI) message

Analyze and interpret call flows using SRI messages and how these messages are processed by the G-Flex feature

Analyze and interpret how EAGLE extracts data from the SRI MSU and uses this data for G-Flex processing

Module 2: Lesson 3


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SRI Message

A MAP Send Routing Information (SRI) message is a request from a MSC (or GMSC) to an HLR to ask where the mobile called is currently located

When the MSC receives the response from the HLR, it is able to continue the routing setup process

A SRI message is “call related” using the E.164 Numbering Plan and will put the MSISDN of the called mobile into the CdPA of the message

MSC and VLR can be located on the same node


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G-Flex Call Flow

An example of an SRI MAP message on ITU network

STPG-Flex

GMSC

HLR

SS7 Network

Network 1Network 2

E164 = 99700000PC = 2000

E164 = 336644444444444

MSISDN = 997022222222222MSISDN called = 997077777777777


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G-Flex Call Flow: GMSC to G-Flex

MSU sent by the MSC to the STP

SSN=6TT=0

NP=E164NAI=INTL

Digit 1=9

ES=BCD



CgPA CdPASCCP Fields

… … GTT is required

STPG-FlexGMSC

An HLR is requested

TRANSMISSION DIRECTION

MSISDN = 997022222222222MSISDN called = 997077777777777

•CgPA contain the MSC information as it’s SSN and it’s E164 number to be able to receive the answer from the HLR•The SSN number of a MSC is eight


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G-Flex Call Processing: Service Selector Table

As GTT is requested, this MSU arrives to the EAGLE Database Module


no

MSU in from IMT

MSU out to IMT



yes

GTT




71

G-Flex Call Flow: G-Flex Triggered


SSN=6TT=0

NP=E164NAI=INTL



ES=BCD





…


…

G-Flex is triggered

•ES field is used by the EAGLE internally, this parameter doesn’t have to be filled during the configuration


72

G-Flex Call Processing: Number Conditioning

G-Flex service has been triggered• The GTA number is conditioned if needed before RTDB

lookup

no

MSU in from IMT

MSU out to IMT



yes

GTT




73



SSN=6TT=0

NP=E164NAI=INTL




RTDB lookup


74


From the NP and NAI fields previously extracted, the G-Flex service knows how to condition the GTA number

• The GTA number needs to be converted to the international format if it is not already in that format, as the RTDB contains only international numbers

• The E164 Numbering Plan does not need to be converted, as MSISDNs are stored in the RTDB database


75

G-Flex Call Processing: RTDB Lookup

After number conditioning, the RTDB lookup is performed to try to find the E.164 number

RTDB Database contains:…MSISDN: 997077777777777 DPC: 2000 RI:SSN…


RTDB


•If the MSISDN is not found as a single MSISDN table, the range of MSISDN table is looked up to try to find a range containing the MSISDN


76

G-Flex Call Flow: G-Flex to HLR


SSN=6TT=0

NP=E164NAI=INTL

Digit 1=9

ES=BCD



CdPASCCP Fields


STPG-Flex HLR


…


77

G-Flex Call Flow: SRI Acknowledgement

The SRI-Ack message sent back by the HLR to the GMSC is routed in the same way as the Update Location Ack

• When the HLR answers back to the GMSC, the CdPA and the CgPA of the MSU are exchanged

• When SRI-Ack arrives at the STP, the Service Selector lookup failes as the SSN from the CdPA is not six (to an HLR)

• Messages falls through GTT to be routed back to the E.164 number of the GMSC

• The SSN of the GMSC extracted from the CdPA is eight (to an MSC)


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1. A MAP SRI message is a request from ____________________________ to an __________ to ask where the mobile ___________ is currently located.

2. The SRI message is _______________________________ using _________________________ numbering plan.

3. Within the SCCP message, where will the MSISDN be located?____________________________________________

4. What data is extracted from the SCCP CdPA for the purpose of matching contents within the EAGLE’s selector table?

1. __________________________________2. __________________________________3. __________________________________4. __________________________________ 5. __________________________________

5. If the GTA needs number conditioning, what two fields previously extracted from the MSU will identify how to condition the GTA?

1. _______________________________2. _______________________________

6. After number conditioning, what is the next G-Flex process for the SRI message?


Student Notes


G-Flex Configuration

Module #3:


82

This module contains the following objectives:Identify the steps and EAGLE commands needed to provision the G-Flex feature on the EAGLE

Identify the PDBI commands needed to provision MNP data into EAGLE Database Modules

Module #3


83

G-Flex Configuration Prerequisites

The SS7 configuration into the EAGLE STP is presumed to be already done:

• Point codes of the HLRs• Links, linksets and routes to those HLRs• The information will be used for MTP3 routing

As the G-Flex feature sits on GTT/EGTT features, those have to be activated prior to G-Flex feature activation

• We presume GTT is already configured

We also presume the EAGLE Database Modules have already been configured


84


G-Flex feature is activated by the commands

• ENABLE-CTRL-FEAT:PARTNUM=893021701:FAK=XXXXX• CHG-CTRL-FEAT:PARTNUM=893021701:STATUS=ON

When a non-international number has to be converted to an international format, it is necessary to define the default E.212 MCC and MNC

• CHG-GSMOPTS:DEFMCC=888:DEFMNC=01

•Note: The default MCC and MNC can be used by the G-Flex and G-Port feature.


85


If G-Flex is used with an MSU in E.164 Numbering Plan, it is necessary to define your CC and default NDC in case the number has to be converted to international format

• CHG-STPOPTS:DEFCC=99:DEFNDC=70


86


If G-Flex is used with MSU in E.214 Numbering Plan, it is necessary to first define your CC and default NDC (if not already done) in case numbers have to be converted to international format

• CHG-STPOPTS:DEFCC=99:DEFNDC=70

Then it is necessary to define the internal conversion table between CCNC and MCCMNC to condition the number to E.212 Numbering Plan before RTDB lookup

• CHG-GSMOPTS:CCNC=9970:MCCMNC=88801


87


Service Selector entry for the Update Location example

• ENT-SRVSEL:GTIN=4:SSN=6:TT=0:NP=e214:NAI=INTL:SNP=E214:SNAI=INTL:SERV=GFLEX

Optional parameter to specify how the G-Flex service has to process the number

Service triggered if all the previous parameters matches the MSU (GTIN, SSN, TT, NP, NAI)

•In the oldest release of EAGLE, the SSN had to be entered separately in another table:

•ent-gsm-ssn:ssn=20:obj=hlr•Only messages that met both ent-srvsel and ent-gsm were sent to G-Flex

•For G-Flex service, SNP and SNAI is always equal to NP and NAI so it is not necessary to define them


88

To load the VSCCP CARD with the RTDB, OAM, GPL, and GTT data, once the G-Flex feature is turned on, always boot the DSM cards with the following command:

• INIT-CARD:LOC=<DSM CARD>

To display IS-NR status of VSCCP card input:• REPT-STAT-CARD



89


To set the G-Flex service to be online, use:CHG-SCCP-SERV:SERV=G-FLEX:STATE=ONLINE

Confirm success of activation with the following commands:

REPT-STAT-SCCPREPT-STAT-MPSREPT-STAT-DB:DISPLAY=ALL

This parameter specifies the name of the service (gflex , gport , mnp).

This parameter specifies the state of the service (offline or online). Re-routing is performed when the service state is offline.


90

Data Provisioning of the Database Modules

The Customer’s Provisioning Database contains the latest MNP information

This information must be sent to the EAGLE STP through the MPS/EPAP platform to allow it to correctly route G-Flex traffic


91

Provisioning Data Flow

EPAP A Active

EPAP BRTDB

RTDB

PDBA

PDBIPDB

Customers Provisioning

Database

STP1

EPAP A

EPAP B ActiveRTDB

RTDB

PDBA

PDB

STP2

Active

Standby

Database Module

Database Module

Database Module

RTDB

RTDB

RTDB

Database Module

Database Module

Database Module

RTDB

RTDB

RTDB


92

Provisioning Configuration

Provisioning commands are sent to the Active PDBA through the PDBI port

The HLR has to be entered first, if not already configured

• ent_entity(id 99700000, type SP, ri SSN, pctype NATL, pc 2000)

Point Code of the HLR and its format

ID of this HLR, usually its E.164

number

Command to add a new SP or a RN

Type of this entity is a Signaling Point

Final GTT to this HLR


93


Then an IMSI or MSISDN can be associated with this HLR

• IMSI have to be provisioned if G-Flex is triggered for E.212 and E.214

• ent_sub(imsi 888011111111111, sp 99700000)

• MSISDN have to be provisioned if G-Flex is triggered for E.164

• ent_sub(dn 997077777777777, sp 99700000)

IMSI number to provisioned

Command to associate a new IMSI to an HLR

ID of the HLR to link to that IMSI

MSISDN number to provisioned


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IMSI and related MSISDN can be associated with this HLR if G-Flex is triggered for E.212/E.214 and E.164Up to a maximum of 8 MSISDNs can be associated to the same IMSI

• ent_sub(imsi 888011111111111, dn 997022222222222, sp 99700000)


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Learning Activities


Learning Activity: G-Flex Activation

Purpose•To provide practical application on the steps and commands needed to provision and validate the G-Flex service on the EAGLE STP.

Objective•After completing this exercise, the student will be able to locate the procedure within the EAGLE Documentation Library to active the G-Flex service; to recognize the step and commands needed to provision the G-Flex service on the EAGLE STP; and to use EAGLE commands to validate the successful completion of G-Flex service activation.

Materials, Equipment, and References• EAGLE STP connected to the MPS/EPAP • EAGLE Commands Manuals:

•Commands Manual•Feature – G-Flex Manual

Instruction (s):•Follow directions for Student Assignments A and B.•Stop after each assignment, and let the instructor review your work.



Student Assignment A:Using the parameter input values below, write out the EAGLE commands needed to activate the G-Flex Feature.

When completed, STOP and allow the instructor to verify your work.

Student Assignment B:Where applicable, use the data from Assignment A and provision an EAGLE STP for G-Flex activation.

When completed, STOP and allow the instructor to verify your work.

286Default GSM mobile country code

See InstructorFeature Access Key

INPUT VALUESPARAMETERS

GSM Flexible NumberingService

InternationalNature of Address Indicator

SixSubsystem Number

ZeroTranslation Type

NationalGlobal Title Indicator

ISDN/mobile numbering PlanNumber Plan

70Default network destination code

90Default country code

28601E.212 mobile country code and mobile network code

01Default GSM mobile network code

9070E.214 country code and network code

See InstructorFeature Part Number


97





1. Number the following in the correct procedural order.

• _____ rept-stat-sccp

• _____ rept-stat-db:display=all

• _____ chg-ctrl-feat

• _____ chg-stpopts

• _____ rept-stat-mps

• _____ init-card

• _____ chg-gsmopts

• _____ enable-ctrl feat

• _____ rept-stat-card

• _____ ent-srvel

• _____ chg-sccp-serv

2. What is the function of the chg-gsmopts command?

3. What is the function of the chg-stpopts command?

4. What is the function of the ent-srvsel command?

5. The G-Flex data comes from the _____________________________ and is sent to the ______________________________ through the ______________________________ platform.


Optional Features

Module #4:


100

This Module contains the following objectives:

Identify the purpose and function of Optional Features, such as:

• EPAP Provisioning Blacklist

• G-Flex SCCP Service Re-Route Capability

• G-Flex Map Layer Routing

Identify and practice new EAGLE commands to implement Optional Features

Module # 4


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EPAP Provisioning Blacklist



102


Problem/Need• If an E.164 address of an HLR is incorrectly provisioned

as a customer’s MSISDN, the incorrect provisioning can caused severe outages in the network until the MSISDN is removed and the customer’s MSISDN is correctly provisioned. If this scenario occurs, all customers on this HLR will be unable to receive calls until the situation is corrected.

• Currently, the provisioning of G-Flex data does not have the ability to check for protected E.164 addresses (such as HLR’s) prior to processing the data record.


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Solution• The EPAP Provisioning Blacklist feature provides a

blacklist functionality and allows the user to define a list of prohibited address strings that are not allowed as DN, DN Block, or IMSI address strings.

• All G-Flex provisioning data will be checked against this blacklist to prevent inadvertent population of protected E.164 addresses into the G-Flex database as MSISDNs.

• The E.164 addresses of all HLRs should be provisioned in the provisioning blacklist.


104


Provisioning of the E.164 addresses for this feature is only made via the EPAP GUI.

• The EPAP GUI menus are used to add and delete G-Flex blacklist ranges and are only accessible to the PDBA group and the User Administration (uiadmin) user

• The EPAP GUI is also used to retrieve, view, and delete entries in the blacklist.

The G-Flex blacklist ranges are stored only in the PDB database. G-Flex blacklist ranges are not sent to or stored in the RTDB.

This feature provides for PDBI checks against the blacklist ranges when the PDBI is used for the provisioning of DNs, DN blocks, and IMSIs. The command is rejected if a conflict is found.

A maximum of 150 blacklist ranges is supported by the EPAP.


105

G-Flex SCCP Service Re-Route Capability



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Problem/Need• If the G-Flex database is incoherent with MPS data and

the GTT data is valid, the EAGLE G-Flex node needs to be able to handle and control re-routing of G-Flex traffic from an affected node to alternate nodes within an operator’s network.

Solution• The G-Flex SCCP Service Re-Route feature provides the

capability to re-route traffic from the EAGLE to other G-Flex database nodes and inform the originating nodes to re-route the G-Flex service related traffic to other G-Flex service nodes.


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This feature consists of the following main functions:Service State

• Indicates the current state of G-Flex (ONLINE or OFFLINE). If the state is marked OFFLINE, the G-Flex will initiate re-routing procedure.

G-Flex Re-Routing• When G-Flex is marked OFFLINE and alternate PCs are provisioned,

any messages destined for G-Flex are re-routed to the available alternate PCs that are defined for G-Flex.

• If alternate PCs are not provisioned or none are available, thenmessages destined for G-Flex will fall through to GTT.

• This feature is enabled by defining a list of alternate PCs or by defining the GTT option.

G-Flex Capability Point Codes• The use of G-Flex capability point code aids in notifying adjacent nodes

about G-Flex service outages.


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109


Define alternate point codes to re-route G-Flex traffic. Up to 7 alternate G-Flex nodes can be provisioned to re-route all the incoming G-Flex traffic.

chg-sccp-serv:serv=GFLEX:pci1=1-1-1:rc1=10: pci2=2-2-2:rc2=10:pci3=3-3-3:rc3=10:pci4=4-4-4:rc4=10

Parameters to add PCs to an existing service group and change the relative cost (RC) of existing point codes in a group

Command to add, service, and PCs with associated RC

Parameter to specifies service name (gflex, gport, mmp)


110


Once provisioned, the G-Flex service can be changed to OFFLINE.

• chg-sccp-serv:serv=GFLEX:state=offline

Parameter to change the G-Flex service state to online or offline


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G-Flex MAP Layer Routing



112


Problem/Need• In an ITU network, when a visited network entity (e.g. VLR,

GGSN, SGSN, or GMLC) needs to contact a home network entity (e.g. AuC or HLR) given only the IMSI of a subscriber, it will convert the E.212 IMSI into an E.214 MGT.

• When an E.212 IMSI is converted into an E.214 MGT for routing, the MSIN portion of the IMSI digits may be truncated during this conversion when the resulting E.214 MGT exceeds 15 digits.

• If this occurs, the message sent to the EAGLE for G-Flex would not contain the complete MSIN, therefore the EAGLE cannot reconstruct the missing MSIN digit. Thus, G-Flex lookup may fail.


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Solution• The G-Flex MAP Layer Routing feature allows subscriber

digits to be obtained from either the SCCP layer or the MAP layer of a message during G-Flex database lookup. This ability resolves the issue of truncation of digits by the mobile switching center (MSC) that may occur in the SCCP layer.

• This feature allows the user to specify whether the subscriber digits are obtained from the SCCP or MAP layer when performing G-Flex database lookup.


114


This feature applies only to the following GSM messages:• MAP Update_Location, • Send_Parameters• MAP Send_Authentication_Information operations

These three MAP operations commonly encode the SCCP CdPA GTA in the E.214 format (MGT) where trailing IMSI digits may be truncated from MGT, and these messages always include IMSI in the MAP layer.

CdPA digits from the SCCP layer are always used to route all other MAP messages.


115


This command is used to specify whether G-Flex MAP layer routing is performed.

chg-gsmopts:gflexmaplayerrtg=ON

The G-flex MAP Layer Routing feature must be enabled and turned on before this parameter can be specified.

Parameter defines the G-Flex MAP layer routing status (ON or OFF)


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1. The ___________________________________________ feature provides a blacklist functionality to define a list of prohibited address strings that are not allowed as ___________, _____________________________, or ______________________ address strings.

2. The EPAP Provisioning Blacklist can be provisioned on the EPAP and the EAGLE.

TRUE FALSE

3. When G-Flex is offline, how will the G-Flex route SCCP messages?______________________________________________________________________________________________________________________________________________________________________________________________________

4. Which EAGLE command will define alternate point codes to re-route G-Flex traffic?

a) chg-gsmoptsb) chg-stpoptsc) chg-sccp-servd) chg-ctrl-feate) none of the above

5. The G-Flex Map Layer Routing allows subscriber digits to be obtained from only the MAP layer of the SCCP message during database lookup.

TRUE FALSE

6. What is the command and parameter that defines the G-Flex MAP layer routing status?

___________________________________________________________


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Final Course Evaluation

Tekelec Course Evaluations are tools that help us maintain the quality of our training programs.

Please complete the form, and return it to your instructor upon completion of the course.

Thank You!

TK301.pdf

Documents

training purposes

tekelec confidential

gflex configuration

gsm gflextk301v4

gflex architecture

gflex feature

unique number

gflex hlr manager