Dibyasingh pattnaik

                                                                                                    +91-9886199531

                                                                                                   dibyasinghp@gmail.com

 

 

·   To utilize my experience and knowledge towards the challenging work ahead and to learn, to grow and to further nurture my passion for wireless technology by exploring the colossal scope and by being a commendable resource in your organization.

 

 

·               8+ years of experience in field of  Telecom software Development and  Testing Wireless Testing (Core Networks, LTE ,OCS,IN(Intelligent Networks),Telecom billing and charging solution,  SIP , Diameter stacks).

§     Around 6years of   experience in different phases of testing life cycle.

§     1+years of experience on Installation and automation process on Shell scripts.

§     Around 2 years. Of experience on Development and bug fixing.

 

·               Well acquainted with STLC, SDLC and different types of testing.

·               Having work experience on site at customer places globally (France, Indonesia, and Bangladesh).

·               More than 5 years of experience on NSN’s BSS/OSS products Testing (OCS & Intelligent Networks (IN) Pre/Post-paid charging solutions).

·               Working Experience on   Diametriq’s Diameter protocol stack testing.

·               Strong knowledge on GSM /3G protocols (SIP, CAMEL, DIAMETER) and 3GPP Standards.

·               Very good knowledge on Diameter protocol interfaces (Gx/Gy/Ro/S6/S13).

·               Testing with organizational proprietary tools and scripting languages like Shell

·               Very good exposure of direct customer interaction onsite during the acceptance testing, and customer support remotely during maintenance phase.

·               Working  experience with different operators and customers like

(DGI, MAXIS, Vodafone, Banglalink, Alcatel, Buzzinbees , Diametriq).

·               Knowledge on SS7, IMS, LTE, VoLTE network functions and signaling call flows.

·               Analysis the call flows by looking into different traces (Wireshark) for different Interfaces & protocols.

 

·   Master of Computer Application(MCA) from  BPUT University, Orissa, with 70% in the year 2000-2003.

 

 

·               Languages                                          : C , C++,Java(core),XML,SQL,Oracle

·               OS                                                        : Windows, UNIX.

·               Scripts                                   : Shell Scripting, Python (basic level), IPSL (Siemens proprietary).

·               Protocols                                          : SIP, Diameter,SS7, CAMEL, TCP/IP , GTPv2

·               Application Software/Tools              : Worked with tools like , Wireshark , Seagull Protocol Traffic generator , SVN, BMC Remedy, Clear case, VMware,

 

 

·               Working as Technical Lead in Ausy Technologies India Pvt.Ltd,Bangalore(From Sept 2013 to till date)  and  working for the customers Buzzinbees(www.buzzinbees.com) & Diametriq

 

·               Working as a Senior Software Engineer (RD. Engineer) in Nokia Siemens Networks Pvt.Ltd, Bangalore. (From March 2008---August 2013)    (Last 6 month transferred to Redknee India Pvt.Ltd as BSS unit of Nokia Siemens Network’s has taken over by Redknee).

 

 

·               Worked as a Software Engineer in Tech Mahindra R & D Services, Bangalore. (From June 2006----Nov 2007).

 

 

 

PROJECT 1: Accelero Diameter Stack

 

·   Total Team Strength: 3

·   Role: Technical Lead

·   Tool                       : VMware, Seagull, Wireshark

·   Platform                         : Linux

·   Project Period: From OCTOBER 2014   till date.

·   Location             : Bangalore

·   Client                              : Diametriq

 

General description:

Diametriq provides a standards-based (IETF RFC, ETSI, 3GPP-IMS and 3GPP2-IMS) implementation of AcceleroTM Diameter, as part of the IMS framework. Accelero Diameter can be seamlessly introduced into IMS-based IP networks state providing high performance, reliability and control functions. In addition to this it provides reliable transport in wireless networks and multimedia frameworks. Diametriq implements its AcceleroTM Diameter product with support for SCTP or TCP transports.

 

   The following items summarize the key features of the Accelero™ Diameter Implementation:

RFC 3588 Compliance / RFC 6733 Compliance   / RFC 4006 (DCCA) State Machine Support

XML Based Configuration can be deployed as:

·  Diameter Server

·  Diameter Client

·  Proxy Agent, Relay Agent and Redirect Agent

Available in Library Package and Distributed Application Mode and Supports both TCP/SCTP

Contribution:

 

·               Test scenario and test case review, and execution of the test cases.

·               Understand the product completely.

·               To test all the application interfaces (Gx/Gy/S6/S13 etc.)

·               Detail log analysis  and debugging on DIAMETER protocol messages

·               Detail debugging on DIAMETER protocol messages.

·               Deputed in customer place Bangalore and to get the customer confidence.

 

2. General product description:

 

Buzzinbees’s platforms embed advanced modular capabilities for messaging, subscriber activation, device detection and convergent charging.

 

Bee-SOON in order to provide the most comprehensive solution and to complete its device management portfolio for 2G, 3G and LTE networks introduced this ADD (Automatic device detection)

 

Automatic device detection enables mobile network operators to improve the penetration and usage of their services, and therefore generate additional revenues:

 

Ø        Customer support: instant identification of the handset used by subscribers calling the helpline significantly decreases customer care costs,

Ø        Device configuration: automatically send the right settings to the handset when first connected

Ø        Promotion of services on the new handset,

Ø        An instant view of the handset installed base, this allows marketing teams to better identify new service opportunities by analyzing consumer’s behavior and adapt their marketing strategy.

 

PROJECT 2: Bee-SOON ADD/EIR (Automatic Device Detection)

 

·   Total Team Strength: 5

·   Role: Technical Lead

·   Tool                       : VMware, Seagull, Wireshark

·   Platform                         : Linux

·   Project Period:   From OCTOBER 2013 to   Sept 2014.

·   Location             :   Client Site (France) &  Bangalore

·   Client                              :   Buzzinbees.

 

General description:

Bee-SOON ADD/EIR (Automatic device detection) Mobile network operators need to be informed when a subscriber changes handset, especially with the wealth of data-capable devices available. Knowing which models are used allows operators to offer new services based on handset capabilities and Buzzinbees has designed Bee-SOON ADD/EIR for this purpose.

It offers operators the ability to regain control of the phones used by their subscribers and immediately react to changes, helping them to maximize their mobile services revenue

 

Contribution:

 

·               Studying  the R Spec and  estimation

·               Preparing Test Plan & Test cases

·               Test scenario and test case review, and execution of the test cases.

·               Detail log analysis and debugging on DIAMETER protocol messages

·               Detail debugging on DIAMETER protocol messages.

·               Automation of  ADD installation process

·               Automation of ADD Test cases in Bee-Soon system test Environment.

·               Correction of the defects after review.

·               Deputed in customer place France for short period of time.

·               Delivering the project to customer.

 

3. General Product description:

Charge@once unified (IN) product suite of NSN which provides convergent rating, charging, billing and call control. In addition it includes dedicated functionality for support of integration with enterprise layer applications. This allows for any prepaid, and postpaid, scenario, using the same rater and business logic for on- and offline charging, billing, and taxation.

 

charge@once unified 3.0 covers all charging and billing related tasks with the following components:

·   Online charging that can be directly integrated in the call control of telecommunication actions

·   Offline CDR rating and charging always performed after a telecommunication action

·   Central Event History, Product and Customer data bases

·   Billing that generates bill line items of the customer’s service usage as input for the invoicing for bill cycle management, bill cycle accumulation, bill cycle discounting, bill cycle taxation, and triggers bill runs.

·   Offer Manager to centrally define, administer and maintain offers and offer packages.

·   Charging Integration that fosters easy and flexible integration into any enterprises business environment

·   Supporting components like charge@once unified IP Dispatcher and charge@once unified #7 Dispatcher for access, distribution and load balancing

 

PROJECT 3:  Vodafone Data charging (C@O unified Rater--OCS)

 

·               Total Team Strength              : 8

·               Role                                          : Senior Engineer Testing

·               Tool                                                  : Test@once,IPSL,wireshark

·               Project Period                            :   From Jan 2012 To September 2013

·               Location                                          :  Bangalore, Gurgaon(customer site)

·               Client                                    :   Vodafone  India

 

General description:

Vodafone India (VF) has a nationwide GSM network in India. The Prepaid subscriber base is being managed with IN Platforms from Nokia Siemens Networks, Comverse and Ericsson

  Vodafone Essar India is intending to deploy Data Charging solution for their 2G and 3G requirements using Nokia Siemens Networks’ charge@once Mediate & Charge@Once Unified Rater.

 

This covers both 2G/3G and future technologies also. The solution will support the following

·   DCCA based  Real time charging

·   Solution supports legacy INs  from different vendors(Comverse/Errscon/NSN)

·   Building of policy and charging use cases.

 

 

Contribution:

 

·               Studying R Spec, Test planning and design.

·               Execution of Test cases (product and customized) using shell and IPSL (Proprietary language).

·               Log analysis for failure test cases, bug reporting.

·               Validate the test cases before the customer release.

·               Involved in regression & automation testing.

·               Acceptance Testing and roll out at customer place.

·               Provide support remotely to onsite support team.

·               Handling customer tickets for different circles on BMC Remedy tool.

 

PROJECT 4: Bangla Link feature Package E/F and Package G .

 

·               Total Team Strength              : 8

·               Role                                          : Senior Engineer Testing

·               Tool                                                   : Test@once,IPSL,wireshark

·               Project Period                            :  From July 2011 Jan2012.

·               Location                                          :  Bangalore, Indonesia, Bangladesh(Customer place)

·               Client                                    : BanglaLink.

 

General description:

                                  Banglalink is one of the operators in Bangladesh which is currently using NSN’s Charge@once selsect1.5.

Banglalink wants some new features from NSN on top of their existing features.

 

Contribution:

·               Execution of Test cases (product and customized) using shell and IPSL (Proprietary language).

·               Log analysis for failure test cases, bug reporting on internal Tool.

·               Validate the test cases before the customer release.

·               Involved in regression & automation testing.

·               Acceptance Testing and roll out at customer place.

·               Provide support remotely to onsite support team.

·               Handling customer tickets for different circles on Resolve tool.

 

PROJECT 5: Maxis Select Features Bundle

 

·               Total Team Strength              : 6

·               Role                                          : Senior Engineer Testing

·               Tool                                                  : Test@once, IPSL, Wireshark

·               Project Period                            : From March 2010 to July 2011

·               Location                                          :  Bangalore

·               Client                                   : Maxis (Malaysia)

 

General description:

Maxis is one of the biggest operator in Malaysia which had  premium service and  Maxis wanted to replace  the existing  service with our  charge@once Select1.7 (Pilot project).So All existing launched services need to be supported on Select 1.7. Any changes to the service must be transparent to the end subscriber behavior wherever possible also new features and services as supported by charge@once select1.7 as per customer requirement

Contribution:

·                

·               Execution of Test cases (product and customized) using shell and IPSL (Proprietary language).

·               Log analysis for failure test cases, bug reporting.

·               Validate the test cases before the customer release.

·               Involved in regression & automation testing.

·               Acceptance Testing and roll out at customer place.

·               Provide support remotely to onsite support team.

·               Handling customer tickets for different circles on BMC tool.

 

PROJECT 6: GSM service development: Phase1 & Phase 2

 

Total Team Strength  : 8

Role: R & D Engineer

Project Period             : From June2008 to Aug 2009

Tools: Test@once,IPSL,wireshark

Location: Bangalore

Client                                           : DGI (Malaysia)

 

General description:

Digi Telecommunications is one of the biggest operators in Malaysia.

Digi   deployed Alcatel-Lucent product but later it swapped with    NSN.

On Phase 2 some new requirement came from customer for development and customization.

Basically I was involved in customization of diameter interfaces for flow based charging via diameter, SMS and MMS.

Contribution:

 

·               Studying R Spec

·               Coding and bug fixing of the customized feature.

·               Unit Testing

·               Execution of Test cases (product and customized) using shell and IPSL (Proprietary language).

·               Log analysis for failure test cases, bug reporting.

·               Validate the test cases before the customer release.

·               Provide support remotely to onsite support team.

 

4. General Product description:

 

The MegaHub 600E currently is a long distance tandem switch capable of handling telephony calls in a circuit-switched network. The A5070 MGC is an initial step towards integration of the traditional circuit switched network and the next-generation packet-based network. The PSTN consists of two separate networks, one that carries the call signaling information, and the other which carries the voice channels. The call signaling information normally uses the SS7 signaling and is carried through the SS7 network that consists of Signaling Transfer Points (STPs). The voice channels aggregated in the form of Time Division Multiplexed (TDM) streams are carried in T1 or DS1 interfaces or higher capacity DS3, OC3, or OC12 interfaces in the PSTN. The MegaHub 600E provides the switching functionality in the PSTN to interchange the time slots in the interfaces dynamically, to originate, terminate or tandem the calls.

 

PROJECT 7               : MM Soft switch

Protocol        : SIP

Role               : Team Member

Tools            : INET

Environment : UNIX

Team size      : 4

Organization : Techmahindra

Duration :  From Dec 2006 to Nov2007

 

General description:

This project involved feature and regression testing of the soft switch. The features that were supported on this switch were Caller ID , Call waiting, Call Hold, Call transfer, Call forwarding, , Three way calling, , Anonymous Call blocking, Find me etc. The testing was carried out on a simulated platform. INET tool was used both for the feature and regression testing and Wireshark was used for packet analysis. I was involved in testing features like Call forwarding (Always, Busy, No answer), Call waiting, Call Hold, SIP Call Transfer.

 

Contribution:

·                

·               Studying R Spec and RFC

·               Coding and fixing Feature related CRs.

·               Test case writing  and review of the scripts

·               Test case execution

·               CR Reporting  and  tracking

 

PROJECT 8: DCR (Dynamic Control Routing)

 

Role               : Team member

Languages       : C

Environment  : UNIX

Team size      : 2

Duration : From June 2006 to Nov2006)

 

General description:

The Dynamically Controlled Routing (DCR) feature provides the ability to optimize usage of inter-machine trunks (IMTs) to significantly increase the network call completion rate as well as improve the overall utilization of these facilities.

 

NMP (Network Management Processor) to which NP (Network Processor) gets connected supports both TCP/UDP protocols for transport. Based on the client (NP) capability & requirement, it uses either TCP or UDP. Client gets connected to the Server on a maximum of two IP links (with TWO client transport addresses). If one link goes down the call is routed through the secondary link.

 

Contribution:

·               Studying R Spec

·               Design for supporting both UDP and TCP transport mode on server side (NMP).

·               Coding according to coding standard of the organization.

·               Unit testing

·               Participating in code inspection & updating codes according to comments.

·               Preparation of  code inspection Report

·               Debugging & bug fixing.

 

PERSONAL DETAILS:

 

     DOB: 16/05/77              

      Sex: Male

      Marital Status: Married