Summary

• 3 years of Professional experience in a field of Telecommunications along with the IT and Electronics industries for around 2 years.
• Detailed knowledge of SIP and SS7, ISUP, TCAP telephony call flow

Skills competencies:

• Programming Languages: C, C++, UNIX, shell scripting, Perl, VHDL, Matlab, VB
• Database Management System: Basics of MySQL, Oracle.
• Telecommunication Technologies: VoIP, CDMA, WCDMA, GSM, GPRS, LTE, PSTN
• Wireless Network Entities: MSC, NGN soft switch, MGW, STP, BTS, BSC, RNC, H/VLR, IN, SCP , NetHawk, Wireshark, Tektronix K-1297 Protocol Analyzer, PDSN, SGSN, GGSN
• Telecommunication Protocols: OSI, SS7protocol suite (TCAP, ISUP), SIP, H.323, WIN, INAP, CAP, GTT, MAP, ISDN, SIP, RTP, MEGACO, MGCP, SIGTRAN, SCTP, SNMP, TCP/IP, UDP, MPLS, ATM, X.25, RIP, OSPF, IGP, BGP, EGP, SMTP, FTP, SNMP, RS-232
• Software Applications: Visual Studio, Clearcase, Rational Functional Tester
• Operating Systems: Windows, Linux, SUN Solaris, knowledge of POSIX std and VxWorks
• Microsoft Office: Excel, Access, Word, Power Point, Visio, Project.

PROFESSIONAL EXPERIENCE:

Confidential, Maryland, USA (Dec 2010 - June 2011)
Designation: Software Test Engineer
Project: Functional Qualification Testing of 'US Patent and Trademark Organization' web, java, xml applications.
Responsibilities: Functional Qualification Testing of USPTO applications in co-ordination with Test Lead, Test Manager and Software Development Lead. Reviewing requirements, user manual for writing/ updating test plans and test cases. Provide Assistance to Automation Lead in automating the test scripts. Maintain the record of defects and co-ordinate with the development team until their resolution. Attend Operational Readiness Review meet with Technical Review Board.
Tools: Clear Quest, Clear Case, Rational Functional Tester, Rational Quality Manager, Requisite Pro
Achievements: Access issue for a web application was resolved after analyzing the incompatibility of the environment due to additional testing tools installed on the machine.

Confidential, Fairfax, VA, USA (Aug 2008 - June 2010)
Designation: Full time student enrolled for MS program in Computer Engineering

Confidential, Pune,India (Feb 2008 - July 2008)
Designation: Engineer - Network (STP / VAS)
World's leading international mobile communications group providing voice and data services to 100 million customers in India.

Project: Signaling Transfer Point installation and commissioning & resolution of voice and data issues for Vodafone's GSMnetwork.
Responsibilities:

• Ensuring 99% availability of the network and introducing Signaling Transfer Point (MRO-TEK DXC, digital cross connect) in the Maharashtra circle to share signaling traffic with other circles.
• Analysis and resolution of voice and data connectivity issues for national and international roamers which involved MSC, HLR, STP, SCP, IN, SMSC, GGSN and SGSN
• Operations and maintenance of Preferred Roaming, Caller Ring Back Tone and Welcome Server

Achievements:

• Planned, installed and commissioned Signaling Transfer Point (MRO-TEK DXC, digital cross connect) for Maharashtra circle in coordination with engineers from all the circles.
• Resolved "Welcome Message not received" issue for in-roamers and out-roamers by analyzing SS7 messages between MSC and the server, verifying information at Home / Visitor Location Register in coordination with engineers from Roamware and Nokia Siemens Network.

Confidential, Mumbai, India (Sep 2005 - Jan 2008)
Designation: Switch Engineer
Largest telecom roll out in India providing myriad Voice and Data services to 100 million subscribers.

Project: Alcatel Lucent\'s CDMA Switch Operations
Responsibilities:

• Operation and maintenance of Lucent 5ESS 2000 CDMA switch and NGN UTStarcom MM2000 Wireless Soft Switch.
• Designing of call routing database in a complex and diverse network consisting of 7 CDMA MSCs, 3 CDMA GMSCs and 2 wire line switches.
• Preparing scripts to query database and various RCV (Recent Change and Verify) forms in UNIX shell on Sun Solaris.
• Troubleshooting of call failure by analyzing 'cause codes' in the SS7 and SIP messages.
• Weekly database backups of OMP-FX, ECP and DCS. Analysis and rectification of hardware faults in the MSC, GMSC, Telos Intelligent Media gateway and Signaling Gateway
• Defining of virtual paths in PSAX (ATM switch) to support CDMA hand offs.
• Performing ECP and 5ESS translations, ECP table generations, dxd route tables and dialing plan form (APXRCV), running shell scripts for analysis of asserts fired in MSC.

Achievements:

• Planned and executed MSC expansion, MSC reallocation activities in coordination with RF team.
• Prepared scripts in DCS shell for cell site integration and E1 augmentation.
• Made use of 'Socket Programming' in Visual Basic 6.0 for communication with MSC to generate customized traffic report.

INTERNSHIP PROJECT
Confidential, McLean, Virginia, USA, (May 2009 - Nov 2009)
Designation: QA Intern
Rollstream provides a Web 2.0 collaboration tools for Supplier Management System.
Responsibilities:

• Testing of Web 2.0 applications, writing, maintaining and executing test cases.
• Daily management of software defects on Jira.

Achievement:

• In coordination with the QA head, software architects and development team I worked on the August release to launch boosted features of Supplier Information Management system.

Confidential, Mumbai, India (Aug 2004 to May 2005)
Designation: Software Development Intern
Instalarm manufacture microprocessor based annunciation system
Responsibilities:

• Software development of annunciator for desktop compatibility in Visual Basic 6.0.

Achievements:

• Led the team of 3 students to design the user interface of the annunciator in VB 6.0.
• Re-programmed micro-controller 89C52 in C for communication between computer and annunciator over RS-232 protocol.

Education:
Masters in Computer Engineering
Bachelor of Engineering in Electronics Engineering

TELECOMMUNICATIONS:

Enterprise Network - 'VoIP Service Analysis using OPNET model'.

Description: Network traffic, link utilization, routing techniques were analyzed for the given network & voice and data quality was improved after altering these elements.

Simulation of M/M/1 queue.

Description: Poisson arrival and exponential service time were assumed and the graph for queue size, mean delay through the system was plotted against time in Matlab.

Simulation of wireless channels.

Description: Rayleigh and Rician wireless channels characteristics were simulated in Matlab.

TCP performance improvement based on 'Packet Loss Identification'.

Description: It's possible to improve the TCP performance by analyzing the cause of packet loss. TCP Vegas and TCP Reno were simulated in NS2 and algorithm was implemented in Matlab.