22 years at AT&T Bell Labs, AT&T Network Systems,  AT&T GIS, AT&T QUEST

·   Cisco and HP-Aruba enterprise networking solutions

·   SDN, NFV, Cloud, Brocade SDN Controllers, Orchestration, IP-MPLS, IOT forward looking architecture and solutions networking

·   Enterprise, Banking, Mergers and Acquisition Networking, Health Insurance & Health Networks

·   Network Convergence with IP, IMS and Wireless Networking, Satellite Networking

·   SATCOM-military and commercial (Dish Satellite networks and defense satellite networks; Telstar (AT&T/NASA),  Spain Summer Olympics Satellite Network, Dish Satellite Network.

·   Metro-Ethernet (Atrica/Nokia Siemens-NSN, Cisco, Juniper), Routing, MPLS, ATM, SONET, DWDM, Optical Networking, VOIP, IPTV, Video Networking, Cable Technologies, VOIP (SIP/H323, MGCP), CISCO VoIP Call Manager, BroadSoft and GenBand VOIP,  IPTV, HDTV, Internet Protocols, SS7 Signaling Protocols, SIGTRAN; Hands-on network  design and low level detailed installation, testing and maintenance  expertise at CCNA, CCNP, CCIE level for IP, MPLS, VOIP, IPTV, Video networks including modeling various IP protocols with Opnet simulation tools.  VOIP Systems Design, VOIP gateway and gatekeeper selection and integration, Session Border Control (SBC), Advanced PBX/ACD switching and routing.

·   Cellular Mobile Wireless 4G/LTE, ATOLL tool usage, Converting LTE specs to functional specs, UMTS-WCDMA, RNC, GSM, GSM to UMTS (UTRAN) evolution, UMA, Femtocells, VoLTE (voice over LTE), LTE for 4G; WIFI: 802.11ac Networking, WIFI standards and testing; OFDM, OFDMA, CDMA, W-CDMA and SC-FDMA including multi-carrier communications; Wireless Geolocation algorithms & technologies (LBS, cell ID based methods, A-GPS Method, Supplementary Methods-TDOA based & RF finger printing based); mobile messaging over IP plus SS7/SIGTRAN

·   Multidisciplinary,  business & technical expert with experience in leadership, vision & strategy

·   Business Development, proposal preparation, contracts, marketing & sales

·   Managed small, medium & large teams including global organizations with $200M+ budgets

·   Systems Engineering of Networks and Systems, R&D, Design & Development, DSP, Systems Integration,  Testing,  Field Trials and Deployment, TIRKS, Operations Support Systems and Operations Technical Plans

·   Video over Adhoc Networks-VANET; MANET, Wireless IP Networks; ICMP and IGMP for Multi-Cast Ad-Hoc Radio Network Applications; HDTV, video streaming and MPEG standards; sensor networks

·   Capacity Planning, Performance Analysis and Operations Research Optimization Techniques

·   Performance Analysis, Modeling & Simulation using OPNET (Modeler, Planner Guru Suite, ACE, etc.),  developing  analytical queuing models with reference to estimating response times, queue lengths, queuing delays, and other performance indicators and applying different probability distributions and traffic generators; use of  STK satellite tool kit with Opnet or QualNet;  IT  and financial banking applications modeling with Hyperformix;  WANDL for Network Design; QualNet,  RSoft  (Artifex Petri Net tool); Compuware tools; Network Discovery Tools such as HP Openview, CA-Concord, SevOne,  MATLAB, SIMULINK; cloud network simulation.

Independent consultant for SDN, NFV, Cloud Network Architecture consulting   Sept 2015-Present

(Cisco Solutions Architecture, Firewalls, SDN, NFV, Cloud, SDN Control with Brocade, IOT, WIFI, Small Cell networks, 4G LTE, 5G; Aruba networking applications)             

Sigma Infinity Consulting     April 2003 to Aug 2015

CISCO Network architecture consulting for multiple clients like IBM, Insurance Companies, Wall Street Banks like JP Morgan, Chase, Health Networks, Companies like Best Buy & Sears-Kmart, Cable companies like Cablevision & Mediacom, Service Providers like AT&T, Verizon and T-Mobile, US Cellular, US Signal.  Upgraded their networks to state of the art network designs using technologies such as MPLS-IP, Optical 100G Backbone and Backhaul Networking; Metro-Ethernet and WIFI ac plus small cells, Aruba solutions. Cisco core network redesign, MPLS network redesign using Cisco; Netflix video network design and performance analysis.

·   IBM Consult (JP Morgan Chase mergers and acquistions, DC Health, Sears,             2003-2005

Cisco-IBM Networking, Fleet Bank, Chemical Bank)                

·   IBM Consult (Aetna Health,) Enterprise Networking, Middletown, CT2005-2006

·   Rockwell Collins (Cedar Rapids, Iowa)  Defense Network Modeling2006-2007

·   Booz Allen (Fort Monmouth, NJ) DOD Wireline, Wireless, WIFI & Cell Networks 2007-2008

·   Cablevision Optimum Lightpath, LI, NY (Belair WIFI- acquired by Ericsson-               2008-2009

and enterprise networks for NY/NJ, in current usage by Comcast WIFI)    

·   CACI(Defense Networking at Fort Monmouth, NJ for defense GIG network)2009-2010

·   Huawei Technologies (Enterprise, Wireless Networking, OPNET-ATOLL Platform)2011-2013

·   Mediacom (Optical, Wireless Back-Haul, Metro-Ethernet, Cisco Core Networking

      with MPLS and BGP, WIFI, HP-Aruba 802.11 ac, Netflix Video; SDN Brocade, NFV,

      ETSI framework, Orchestration for Data Centers)2013-2015

Network and IT solutions systems engineering, Network Infrastructure Team Lead, Systems Integration, Test and Deployment, Network Maintenance; Aruba WIFI 802.11 ac; OPNET Modeling, Metro-Ethernet, MPLS, 4G/LTE/IP core networking research for transition of existing 3G and legacy Sonet TDM networks; mobile messaging over IP Networks with SS7/SIGTRAN;   data and wireless network integration and migration  for CDMA, GSM, UMTS to LTE/4G  networks; Mobile networking with mobile messaging (SMS, EMS, MMS); SS7/SIGTRAN.

Wireless network solutions systems engineering. Developed UMTS and LTE models using OPNET Modeler Wireless Simulation tools;  developed studies using RNP tools such as ATOLL, Mentum PLANET, ASSET; ray tracing tools such as  Volcano, WaveSight; automatic cell planning tools (ACP) such as Capesso Symena. Developed Matlab and Excel models for validation.   Conducted studies of RNC, NodeB, UE, ENodeB, LTE architectures, SHO,  air-interface at physical layer, link budgets, downlink, uplink power, pilot pollution, BLER, BER, Eb/No, Ec/Io, RSRP, RSRQ, modulation techniques, etc.  Conducted competitive wireless tools study including QualNet, NS, OMNET++, etc. Customers: Developed and executed wireless technology and networks transition plans for Bel, Telus in Canada, Cricket, Sprint and Light Squared.

AT&T BELL LABS & AT&T Network Systems (Jan 1991 – Dec  2002)

Distinguished MTS, AT&T Bell Labs Jun 1991 – Dec 2002

Lead Network Designer, Performance Analyst and Systems Architect.

Responsible for project planning, coordination of 100 plus team, architecture, infrastructure planning and leadership, simulation, development, integration, and testing for IP protocol based Cisco networks, 4E, 5E Networks and wireless networks.  Responsible for migration of  AT&T's wireless networks from AMPS to GSM to 3G with IP; PSTN migration to ATM/IP/MPLS/VOIP, AT&T Global Satellite Network,  Spain Summer Olympics Satellite Network. Performed systems engineering for AT&T Satellite Network, Verizon CDMA network through Bell Labs. Integrated wireless with existing networks and migrated circuit switch network to ATM, VoATM, MPLS, VoIP, IP PBX Lucent (Avaya); did VOIP systems design, gatekeeper and gateway selection along with PBX/ACD selection and integration; IPTV/Video Over IP; introduced DWDM and Optical Networks into AT&T’s SONET based backbone; MPLS, Routing and additional circuit switch capacity by re-engineering network based on traffic and using adjunct switches to solve capacity problems. Performed network management with SNMP, TL1 for telecom networks,  PBX, and developed SATCOM network systems design. Conducted Infininiband studies for data networking centers and SANS inside AT&T including network security, and used Compuware tools for network performance studies, system test, and integration. Responsible for process methodologies improvement, system integration and testing, usage of ISO 2000/2001 standards, QMS quality standards, etc. for an internal Bell Labs sub-organization called QUEST.  Performed QUEST consulting role for Wall Street financial sector (JP Morgan, etc.).

Systems Engineering, Infrastructure Planning, Management, Execution and Maintenance & Business Development for VOIP Technology Deployment at AT&T: Developed architecture specifications for industry’s first high quality VoIP and future IPTV services, delivered technical architecture documentation, identified system requirements, interacted with different teams, developed power point presentations, and reflected industry best practices. Provided subject matter expertise to the IP based voice and data products in the industry. Set up lab, test environment, and deployment for end users and wholesale VOIP, PBX service providers through AT&T.  Conducted research and development in Video over IP (IPTV) in laboratory environment.  Implemented routing strategies for AT&T networks, and conducted network and routing performance studies using Compuware, HPOV, Agilent, Opnet and Hyperformix tools including testing and integration.  Performed VOIP and IPTV testing in laboratory; developed wireless satellite networking projects for Olympics, commercial and military. Consulted for Immarsat mobile satellite networking company in UK through AT&T Global Information Solutions.

VOIP and Video over IP (IPTV) skills used at AT&T: Focused on big picture and interaction with systems engineering experience including hands-on analysis and design, project management skills, managing team of developers, providing presentations, leading design review meetings, and significant involvement with different version of VOIP and IPTV technologies provided by different vendors.  SIP, H323, Detailed lab testing, config, maintenance and troubleshooting including routing network management. 

Distinguished MTS,  AT&T Bell Labs          1994 –1996

Lead Solutions Architect

Responsible for Enterprise Network Architecture, Modeling & Simulation services for internal AT&T projects related to Enterprise, Corporate IT, Wireless Networking, International and Private Line Services.

AT&T GIS (NCR acquired by AT&T)1991 – 1994

Lead Solutions Architect, Performance Analyst, WALL STREET Business Development and Sales -  Enterprise Networking Professional Services

Promoted to Director - Professional Services: Enterprise  Network  Design & Architecture for NCR renamed AT&T GIS –Development of new contracts for AT&T GIS  consulting business of $200M

SS7 Based Advanced Intelligent Network applications projects for OSS (pre-cursor to today’s Virtualization and SDN).  Participated in researching 45 plus internal and external tools, participated in re-architecting and redefining features and libraries for use within AT&T of the OPNET simulation tool version 2.0 from a UNIX  environment onto a PC Windows platform which still continues today in version 18+.   First in the industry to develop a $200 Million Network Architecture,  Planning, Modeling and Simulation consulting business for AT&T using OPNET tools (acquired 2012 by Riverbed).  Interacted with customers such as Fleets Bank, Wells Fargo, Chemical Bank, Collective Federal, Sears, Health Care Companies, Washington DC Government, Master Card and US Department of Defense to design and evaluate existing networks, systems & services, recommend improved network architectures using AT&T networks and services such as Frame-Relay, MPLS, ATM, Accunet, etc.    Evaluated internal AT&T packages such as Q PLUS, QSQUARED, PANACEA, QUEST Tools (Witness, IDEF, etc.) and external packages, such as OPNET, IT Planner Guru, COMNET , COMPUWARE, RSOFT (formerly Bellcore Network Design Tools), BONES (now merged into MLDesigner with Ptolemy, etc.) & MIND; I-THINK / STELLA, VenSim for Systems Dynamics (MIT);  conducted performance modeling and simulation to support sales of networks and services using Hyperformix for financial transactions applications and Opnet (Riverbed) for network infrastructure applications; BPR tools and Workflow study and applications for AT&T QUEST consulting business development.

TEACHING EXPERIENCE

1.               Adjunct (evening part time Professor), at NJIT for teaching  graduate courses in Networking (Book:Top-Down TCP-IP Networking by Ross and Kurose),  Wireless Systems and  Networks (Book: Wireless Communications  and Networking by Vijay Garg, Morgan Kaufmann Publishers)

2.               Teaching Networking courses in the following:

a. CCIE: Switching and Routing

b. CCIE: Wireless

c. CCIE: Service Provider

d. CCIE: Security

e. CCIE: Data Center

RESPONSIBILITIES

·               Architecture, Strategy, Visio, Increasing Business Dollar Volume

·               Integration and or expansion of multi-site networks

·               Prepare pre and post-sale documentation

·               Prepare Visio architecture diagrams

·               Track project using Excel, Project and other PM tools

·               Prepare bill of materials (BOMs)

·               Provide design and configuration support

·               Provide support to Level 2-3 engineers

·               Work with stakeholders for infrastructure recommendations

·               Support Account Managers

·               Mentoring