Summary

Highly skilled, motivated with strategic thinking and analytical decision making seeking challenging, growth oriented by utilizing steamed fourteen years of project technical lead, senior systems integration, software testing, pre and post technical support engineer skills in wireline, wireless and information technology using industry next generation technologies and solutions from Nortel Networks, Cisco Systems, Alcatel-Lucent and Nokia Siemens Networks. Strong customer relations providing valuable technical consultations and recommendations involving multi-vendor services and solutions. Excellent leadership skills to meet and execute project dead lines.

• Four years of Sr. Principal Lead Systems Integration experience at TerreStar Networks in multi vendor network integration environment. Integrate all IP end to end mobile satellite and terrestrial communications network that will provide universal access through out North America using WCDMA UMTS I-HSPA, IMS, PoC, SGSN, GGSN, HSS, MGW, MSC/NVS, MGCF, CG, DNS, AAA, DHCP, Satellite-BSS and Cisco switch and router 7609, 6509 and 2811.

• Configure and troubleshoot difference interfaces of 3GPP packet core and IMS application server on Cisco 7609 and 6509.

• Provide network and system engineering expertise in 3G and IMS based networks incorporating VoIP and SIP applications.

• Interface with multiple vendors to ensure all issues are being resolved and we are meeting the deadline of the projects.

• Analyze, troubleshoot and capture traces on different interfaces of 3GPP and IMS network like Gn, Gi, Gr, Ga, IuPS Control and User plane traffic on GTP, Gm, Cx, Dx, Mw, Sh, ISC, RTP, Mc, and Mb.

• Six years of WCDMA GPRS and UMTS experience of software testing, validation and integration in end-to-end environment with overload, capacity, performance, robustness, upgrades, KPI, new 3GPP features and functionality testing.

• Develop detail test plan, test cases and MOP for upgrade, verification and system integration for 3G wireless software loads.

• Direct interface with high profile customers and reproduce critical issues of AT&T, O2, Vodafone, T-Mobile, and Qwest in our lab and work with designer for the solutions.

• One year as technical and sustaining support engineer of data product Cisco 6500, Passport 7k/15k, UMTS, GPRS, GGSN, DNS, DHCP and HLR. Daily tasks include troubleshooting, identifying solution and maintenance of customer field issues.

• Two years of experience in designing and developing NOC infrastructure for Sprint Inc. using ITIL standards and procedures.

• Strong knowledge of the OSI layers, particularly layers, 2,3,4 & 7 and the topologies used for Ethernet, Frame Relay, ATM, Switching, LAN, Routing, WAN, SS7, SIGTRAN, TCP, UDP, SCTP, SCCP and M3UA.

Technical Competencies

Wireless Technologies GPRS, UMTS, I-HSPA, WCDMA, IMS, PoC, SIP, RTP, VOIP, P-CSCF, I-CSCF, S-CSCF, HLR, HSS, Node-B, RNC, Flexi BTS, WiMAX, LTE, IEEE 802.11

Networking Protocols IP, TCP, UDP, ATM, Frame Relay, PPP, SNMP, FTP, NIS, NFS, SSH, MPLS, OSPF, RIP, BGP, IGRP, DHCP, DNS, AAA, SS7, ANSI, ITU, ISDN, T1, T3, MAP, CAP, BSSAP, SIGTRAN, MTP1, MTP2, MTP3, GTP, RANAP, SCTP, SCCP, M3UA, IPSec, ESP, Authentication Header

Automation Tools NetHawk EAST & M5, Tektronix K1297 & G20, Catapult MGTS i3000, INET Spectra, Mercury Quality Center and Test Director, MetaSolv 5.01, Clarify, Empirix G5, FX-IP, DEX, HCA

Programming Skills C, C++, NetExpert, PASCAL, awk, perl, Expact and HTML

Network Mgmt. Tools NetExpert 3.4/3.5a.6, HP Open view

Protocol Analyzer NetHawk M5, Empirix Hammer Call Analyzer (HCA), XMS, Wireshark, Ethereal, NEMO

Hardware Passport 7k & 15k, Nortel’s PCUSN, Shasta GGSN, DMS-MSC, DMS-HLR, Nokia DX200–HLR and SGSN, HP SIG, VLR, Sun Ultra 2, 5, 10; Enterprise 250, 3500, Cisco 6500 and 7600

Operating Systems Sun Solaris, Linux, Windows 2000/XP/Vista, Windows Server 2003, QNX, HP-UX

Professional Experience

TerreStar Networks

Sr. Principal Lead Systems Integration Engineer March 2007 to Present

• SME with extensive knowledge and experience in Packet Core products, standards, and solutions for 3G, LTE/EPC, G/U and IP transport, & converged Core solutions.

• Design, architect, test and integrate end to end all IP 3G, 4G/LTE networks according to 3GPP and IETF standards using I-HSPA packet core, IMS and PoC application solution by Alcatel-Lucent, Nokia Siemens Networks and Cisco product.

• Integrate mobile satellite and terrestrial communications network that will

provide universal access throughout North America.

• Integrate handset with packet core and IMS network; establish true all IP call between two mobile and wireline handsets.

• Work with multiple vendors to evaluate the product so that it can be used in lab and field for testing and troubleshooting.

• Systems and network integration of Nokia Siemens Networks 3.5G, ANSI SS7, Sigtran core network with Alcatel-Lucent IMS, MGW, MGCP, PoC, HSS and HLR. Integrate and test with Hughes Networks Satellite Base station system (S-BSS).

• Configure and test IPSec (IP security) security of Internet Protocol (IP) communications for encrypting and authenticating each IP packet in a data steam in transport mode and tunnel mode.

• Integrate Nokia Siemens Networks 3.5G, Flexi BTS, I-HSPA, BTS, DX200 SGSN, Flexi ISN GGSN, UMS500, P-CSCF, I-CSCF, S-CSCF, DNS, HLR, HSS, AAA, DHCP, Charging Gateway and PoC with Alcatel-Lucent IMS and PoC, LCP, LCS, 5350 -Push to Talk over Cellular, eSM, OMCP and Vital QIP.

• To test capacity, performance and for proof of concept tests were ran with two features enabled deep packet inspection (DPI) and CDR on Cisco GGSN and Nokia Flexi ISN GGSN.

• Used NEMO to test and troubleshoot signaling message and different state of RRC cells URA_PCH, FECH, DCH and PCH.

• Configure and test IMS Session Initiation Protocol (SIP) and VOIP signaling traffic, using Empirix FX-IP, G5 and IMS DEX emulator. Monitor signaling and bearer traffic with Empirix HCA (Hammer Call Analyzer), XMS and WireShark.

• Capture traces on Gn, Gi, Gr (M3UA), Ga, IuPS Control and User plane, GTP, Gm, Cx, Dx, Mw, Sh and ISC interface using NetHawk M5 protocol analyzer and Empirix HCA and XMS to monitor signaling and bearer traffic across the network.

• Write detail test plans and requirements for Hughes Networks, Alcatel-Lucent and Nokia Siemens Networks.

• Work with sales team to answer technical questions, provide demos to potential customers and investors.

• Provide customer support, debug field issues and test patches to resolve software deficiencies.

• Work with different vendors to isolate issues and escalate trouble tickets.

• Use Mercury Quality Center to track test cases, customer defects and execution progress to management.

Nortel Networks

Sr. Product Test and Integration Engineer March 2001 to March 2007

• Develop and execute test cases to verify GPRS/EDGE and UMTS signaling, data capacity, performance, robustness, overload, KPI, upgrades, user acceptance testing and writing of test plans and test cases for every new release.

• Design, architect, implement, test, validate and troubleshoot calls from end to end on real SGSN, GGSN, MSC, VLR, HLR, DNS, DHCP, Firewall, SS7 and Sigtran.

• Experience with load simulation tools like Tektronix K1297 Classic and G20, Catapult MGTS i3000, INET Spectra, NetHawk EAST and Spirent Smartbits 2000.

• Lead product test team for 2.5G and 3G SGSN feature PDP Modification, Packet Flow Context and MsPurge.

• Develop and test Method of Procedure (MOP) for software upgrade, implementation of new features and roll back procedures

• Work with design team to get the proper fix in software load and then soak the patch with full call model traffic.

• Wrote scripts in Tektronix, Catapult and EAST (NetHawk) for functionality testing.

• Soak call model traffic with mixture of Attach, Detach, Combine Attach, Activations, Primary and Secondary Activations, Normal/Periodic RAU, Inter SGSN RAU (IRAU), SMS, Suspend/Resume, and CAMEL (IN).

• Monitor traffic during soak and put together 72 hours traffic run to see if we are meeting the quality plan.

• Use Mercury Quality Center to track test cases, customer defects and execution progress across release and test cycles.

• Captures traces on SCTP, SCCP, RANAP, Gn, Gi, Ga, Gs, Gd, IuPS, IuCS, GTP for design team to identify the problem.

• Provision, configure and upgrade SGSN (Passport 7K & 15K) and GGSN to new maintenance wireless load.

• Wrote automated GAP test cases in C++ for GPRS & UMTS call scenarios from GSM specifications for Gb, Iu, Gn, Gr, Gs, Gd, Ge, Ga, and Gi interface.

• Retest Clarify trouble tickets on the latest load of wireless SGSN, once the fixed has been submitted in the load.

• Provide 24x7 supports for critical issues of high profile customers like AT&T, O2, Vodafone and T-Mobile in our lab and work with designer for the solutions.

• Follow ISO TL9000 for test plans, test cases, software and hardware upgrade procedure.

Nortel Networks

Technical Support Engineer June 2000 to March 2001

• One year as technical and sustaining customer support engineer of data products for Cisco 6500, Passport 7k & 15k, UMTS, GPRS, SGSN, GGSN, DNS, DHCP, AAA and HLR. Daily tasks include troubleshooting, debugging, identifying solution and maintenance of customer field issues.

• Provide 24x7 technical supports for different data products of Nortel Networks. Daily tasks include testing, installation, configuration, maintenance and troubleshooting of Passport 8600, 7k/15k ATM switch, CVX-1800, and CVX SS7 Gateway.

• Support, troubleshoot, reproduce and identify solution for above data products for high profile customers like Qwest Communication and Broadwing Inc.

• Build lab from scratch; installation, configuration and setup of SUN Enterprise 250, Passport 15k, CVX-1800, CVX SS7 Gateway, CVXView and SS7View.

• Troubleshoot & work for resolution on above products to minimize system impact on end user and limit the down time to zero.

• On site customer support training on above data products.

MCI WorldCom

Software Systems Engineer Nov 1999 to June 2000

• Design, system architecture, requirements, and developed application to parse the certain values from the text files by IMCI and LINMOR and plugged to the database so that user can invoke performance data from web to see hourly report.

• Installed and configured new hardware SUN Enterprise 250, 3500. And installation of patches and other software packages.

• Installed and implemented Solaris2.7, Network Information Service (NIS), Network File Services (NFS), Domain Name System - DNS and DHCP server.

Intranet Consultant, Inc. (U.S. Sprint)

Network Engineer Oct 1997 to Nov 1999

• Managed and designed EMS network elements PASSPORT switches using Nortel’s Magellan Network Management System (NMS) and NetExpert tools. Involved in Fault management (monitoring, isolating and correcting faults in the network), Configuration management (defining the network components) and Performance management (monitoring and adjusting the performance of network devices) of Passport Management System, which is used for the frame relay connection for Passport nodes.

• Support the configuration of Nortel’s Passport ATM/Frame Relay Switch network. The operation includes configuring ATM (DS1, DS3 and OC3 circuits), Frame Relay (DSIC, DS3C, and circuit card), and FR-ATM inter-working and High Speed Frame Relay access (HSSI and DS3 circuit’s cards).

• Installed and configured HP OpenView tools, including MeasureWare, PerfView, GlancePlus, OVO and NNM.

• Data collection and configuration on the new switches. Adding new Passport and ION switches to NMS (Network Management System), SM (Service Monitor), and MDP (Magellan Data Provider).

• Daily tasks include testing, installation, configuration, maintenance and troubleshooting of different application software and hardware. Reproduce the customer’s problem in our data lab for troubleshooting as well as testing the above data products.

• Using NetExpert coded the functionality to create and delete the UNI and NNI signaling path for the ATM switch.

• Provide switch performance data in the form GUI using shell script and awk.

• Using SNMP Set/Get from the MIB table provided the performance data to user.

• Provided several enhancements on the existing functionality over the Frame Relay to ATM

Education and Certifications

Bachelor in Computer Science, Texas Southern University (May 1997)

Bachelor in Mathematics, Punjab University (Aug 1989)

TCP/IP Network Analyst certified

Exin, Information Technology Infrastructure Library (ITIL) certified

Nortel Networks Certified Support Specialist - PASSPORT 7K (SGSN)

Nokia Siemens Networks SGSN SG6 Operation & Maintenance - DX200

Cisco Certified Network Associate - CCNA Routing & Switching (Sept 2008)

Cisco Certified Network Associate - CCNA Security (June 2009)

Cisco Certified Network Associate - CCNA Voice (July 2009)

Project Management Professional - PMP (PMI certification, appearing for exam soon)

References

Personal and Professional references furnished upon request

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