MediatonPortal_21012011_BRBRAITT_JBP

Workshop on CDR (BRBRAITT, Jabalpur)

Mediation & Mediation Portal

21ST January 2011

Bharat Sanchar Nigam Limited


Circle No. of SSAs migrated

No. of SSAs to be migrated

Andhra Pradesh 14 8Karnataka 17 2Kerala 1 10Tamilnadu 17 0Chennai 0 1Total 49 21

Status of migration of SSAs in South Zone

Validating the fields as per the CDR structure

Identifying the call scenarios including special numbers

Filter based on business requirements

Identifying difference services viz. CENTREX, ISDN etc

Detecting error CDRs and reprocessing after error rectification

Generating output as per the downstream applications requirements

Salient Features


Intec Mediation System

ValidateFilter

Dup-checkAggregate

Correct

Mediation

Collection

Conversion

Distribution

Comverse Billing

Intec IOBAS

NeuralFraud Management

G1 Enterprise Reporting

Administration Configuration Alarms & Logs Reports Monitoring

Distribution

COLLECTION

ConnectivaRevenue Assurance System

Config Scripts

CDOT E

10BE

WSD

OCB

5ESS

AXE

WLL


Mediation System

CDOT OCB EWSD 5ESS

AXE10

WLL

Packetware

E10B

MTE

FTP

CES

FTP

FTP FTP

FTAM / X.25

Online Collection of CDR files from Switches

CES : Compact Embedded System (A intermediate device to connect to CDOT switch)

MTE : Magnetic Tape Emulator (A intermediate device to connect to E10B switch)

FTAM: File Transfer Access Management (A secured network protocol)

CMISE: Common Management Information Service Element (a secured protocol)

CMISE


Collection of CDR Files from C-DOT Switch The main CDOT switch (MBM) which contains Central Module will

generate CDRs and dump into IOP within predefined intervals.

CES (Compact Embedded System) device connects to the IOP and collects the CDRS in to CES box buffer (256 MB storage capacity).

Unlike MTE box which is directly connected to the E10 B switch, CES box will be connected to the IOP only.

CES box is nothing but a PC with Linux operating system having NIC card assigned an IP address.

For installing CES devices separate software to be installed in IOP and CES attached PC.


Collection of CDR files from C-DOT Switch


• The control and Memory cards in E10B switch will generate CDRs and write on to magnetic tape drive.

• At present these CDR files are collected off line into a exchange PC.• A device called MTE box was installed by replacing the Magnetic Tape writer

for storing the CDR files. • The data bus cable which is connected to Magnetic Tape Drive is bi-passed and

connected to MTE i.e. MTE is directly connected to E10B switch.• File server (PC) • IP for ftp• MTE also requires an additional PC ( file server) with an application software

called “ADRS Charlie” loaded in it for collecting the CDR stream and making the CDR files in regular intervals.

Collection of CDR Files from E-10B Switch


Collection of CDR files from E-10B Switch


The protocol implemented in OCB switches is CMISE which is proprietary protocol of Alcatel.

A third party application called Packetware is used as intermediate application in a separate server, where in CDR data will be provided (pushed) by the OCB switches.

The CDR data will be written in the Packetware server in a regular intervals (say 1 hour) and the CDR files will be collected from this server to Mediation server using ftp protocol.

CMISE Common Management Information Service Element (or)

CMIP common Management Information Protocol

Collection of CDR Files from OCB Switch


Collection of CDR files from OCB Switch


NE CDR File Transform

stage1

Filter

Duplicatecheck

Aggregate Transform stage2

Billingoutput

Process Flow

Step1 :- CDR file will be collected from the switch in a scheduled interval of time.

Step2 :- CDR file will be read as per encoding rules and CDR structure.

Step3 :- Filtration of CDRs will be done here as per business rules, such as

incoming calls, prepaid calls etc.

Step4 :- Duplicate CDR check follows.

Step5:- Aggregation of partial CDRs (if available) will be done.

Step6:- Apply the billing requirements and generate the CDRs in billing format.


CDR ProcessingS.

No.Name of the

Switch Company CDR Type CDR Length in Bytes

Block Size

BytesRecords/

BlockDummy Bytes

1 OCB 283 fixed Alcatel Binary 42 2052 48 36

2 AXE-10 Ericsson ASCII 190 2048 10 11

3 5ESS AT&T (USA) ASCII 126/127 2000 15 110/95

4 E10B Alcatel Binary 26 2048 78 20

5CDOT MAX-L, CDOT MAX-

XLCDOT Binary 38bytes-2219,

36bytes-2216 No No No

6 OCB 283 Variable Alcatel Binary Variable (~80bytes)

7 EWSD Siemens Binary Variable (~80bytes)

8 WLL ZTE Binary Variable ASN1


CDR Processing Validating the CDR fields, error CDR detection & error CDR re-processing. Duplicate CDRs detection. Filtering the certain CDRs as per the business requirements.

Incoming calls Transit calls (Calls transferred between two or more switches) FLPP outgoing calls ITC Outgoing calls Supplementary service CDRs (123,124,114,115,118,119)

(Password registration, Local, STD, ISD barring provisioning by customer) Fillers (Some additional characters incorporated purposefully by Switch

in order to make the CDR structure / block to obey certain rules in size/ length)

Other toll free CDRs are not filtered and providing to billing with free CDR usage ID (1004).


CDR Processing

Aggregation of long duration calls (Partial CDRs aggregation). Splitting of CDRs (in Broad Band IPDRs) Detection of all types of call scenarios.

Local (PSTN, Centrex, ISDN.. etc) STD (PSTN, Centrex, ISDN.. etc) ISD (PSTN, Centrex, ISDN.. etc) Centrex CUG (by look up) etc.


CDR Processing

Special number calls:-

Announcements TOLL Free Toll numbers (full charge to customers) Toll numbers (partially charged to customers) Special numbers like :

Police Call centers Ambulance Hospital Help line (Crisis) Kisan Help line …. Etc


Coordination Mechanism

The Mediation Portal can be accessed on the following link s for various zones North:http://10.202.215.24:8081/nmediation/West:http://10.193.212.253:8081/wmediation/South:http://10.196.215.41:8081/smediation/East:http://10.199.215.48:8081/emediation/


http://10.193.212.253:8081/wmediation/

http://10.193.212.253:8081/wmediation/

http://10.193.212.253:8081/wmediation/

http://10.196.215.41:8081/smediation/

http://10.196.215.41:8081/smediation/

Recon Mechanism Between Switch & Mediation Time Gap Analysis Reports

Indicating the Unacceptable Time gap between any two CDRs Switches are categorized into 3 different categories Acceptable Time gaps (busy Hour / Slack Hours) are defined for each

category.

Time Gap Analysis Configuration

CATEGORY BUSY_HOURS SLACK_HOURS REMARKS

08:00 to 22:00 hrs 22:00 to 08:00 hrs

Category-1 2 Mins 15 Mins High Traffic switch

Category-2 5 Mins 30 Mins Medium Traffic Switch

Category-3 10 Mins 60 Mins Low Traffic Switch


Recon Mechanism Between Switch & Mediation

Sequence Number Verification• Either CDR sequence number or file sequence number / Time stamp continuity

CDR Sequence Number Verification• Possible in EWSD, E10B, AXE & ZTE• Even if time gap is present, if CDR sequence is continuous, there is no need to

alert the switch in-charges

File (BLOCK) Sequence Number Verification• File sequence number is used in 5ESS & ZTE• BLOCK sequence number is used in OCB

File Count Verification• Used in CDOT Exchanges, where file transfer rate is one file per hour


Recon Mechanism Between Mediation & Billing

File Verification

• The number of files sent by mediation are verified with the number of files received by the billing system & are reconciled

• Number of records in each file forwarded by Mediation are being verified at billing end


Mediation Errors

Field Errors

Non numeric calling number (“A” number)

Wrong dates / time stamp in the CDR’s

Structural Errors

Errors in CDR format

Deviation from defined format

Errors while writing onto disk at the Switch


Mediation Reports

Daily on-line CDR files status report for each SSA – switch wise

Time – gap detection report for all switches

CDR sequence check report for EWSD, E10B, WLL switches

Block sequence check report for OCB

File sequence check report for 5ESS and WLL switches


Problems in collection of CDR filesEscalation mechanism (SMS)

1 day-JTO

2 days - SDE

3 days - DE

4 days- DGM

Problem in CDR Collection


Problems in collection of CDR filesEscalation mechanism (SM docket)

CDR File collection problem

CDR File collection OK

Verification by TCS w.r.t.

Mediaton Status

Action by TCS to restore

Remedial action by HCL

Closing the docket by TCS after verification

Ticket is raised by TCS on HCL


Mail your comments /suggestions

to [email protected]

Thank You


MediatonPortal_21012011_BRBRAITT_JBP

Documents

cdr data

online collection of

cdr brbraitt

cdr stream

mediation server

mte box

e10 b switch

ocb switch bhar