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Welcome to CellStream, Inc. - Telecom Consulting and Training!

Welcome to our home on the Internet, where we can not only share information, but also interact with each other. If you are a visitor to the site, there are a number of things to view: our FAQ'sNetworking and Computing Tips, our CellStream Blog, and other fun reading can all be found in the drop down menus above.  The Training menu provides access to our courses, our course calendar, and learning services.  The Consulting Menu provides information on our consulting services and a place to meet our consulting and teaching team.  Registered CellStream folks and our clients will log in using their private credentials to access projects, calendars and discussions.

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DIRECT CONTACT INFO: Andrew Walding – email awalding@gmail.com – phone 214-405-3708

SUMMARY

Over thirty years of data and telecommunications industry experience with emphasis in networking protocols/methods, and development engineering of real-time hardware and software for access, transmission, and network management telecommunications systems including implementation, network and field operations, data center, sales/engineering support, training, security, product introduction, and international business.  Desire to continue to advance experience in voice and data networking integration using TCP/IP, Security, Optical, Ethernet, Frame Relay, 802.11 Wi-Fi Wireless and associated telecommunications technologies.

  • Instructional Design, Training of technical “Hands-On” and “Web Based” technical course research, creation and delivery
  • Built complete Learning Management System (LMS) based in Moodle
  • Network Design/Simulation/Implementation
  • Development Engineering with latest technology & process
  • Full program P&L responsibilities
  • Customer interface, network planning, and molding solutions to challenges
  • Product Life Cycle planning, attainment and fulfillment
  • Object Oriented Design processes
  • International business collaboration management
  • CDMA Wireless Radio/Satellite
  • CBRS Certified 
  • L3, TCP/IPv4/IPv6, DiffServ, RSVP, Internet and Intranet Design, Security and Penetration Testing
  • Ethernet 802.x, Industrial Ethernet, VLAN, VXLAN, L2 Switching, Security
  • 802.11 Wi-Fi Wireless Networking, site survey, design, security
  • MPLS, GMPLS & MPLS-TP, L2/L3 VPN, AToM, Traffic Engineering, Frame Relay
  • Voice/Video communications, Voice over Packet (VoIP, VoMPLS)
  • L3 Routing Protocols RIP, EIGRP, IGRP, OSPF, BPG, IS-IS
  • Digital Loop Carrier, DSL, ADSL, VDSL, Digital and Optical Cross-connects
  • SDH/SONET/WDM/DWDM and IP over Optics
  • Network Management, HP Openview
  • HTML/JAVA/BASIC/Visual Basic/SmallTalk/C/C++/Python

PATENTS

  1. Patent US#6,031,845 "Allocation of Bandwidth to Calls in a Wireless Telecommunications System" [pending in UK: #9709802.4]
  2. Patent US#6,181,710 "Handling of Telecommunications Signals Passed Between Elements of a Telecommunications Network" [pending in UK: #9712172.7]
  3. Patent US#6,181,710 "Integrated Element Manager and Integrated Multi-Services Platform"
  4. Patent US#6,600,815, UK: #9626779.4 "Telephone Network Access Adapter"
  5. Patent US#7,643,434, on VPN Management in MPLS/IP Networking

PUBLICATIONS

  • Hundreds of Networking and Computing Tips and How To’s all found at the following link: https://www.cellstream.com/reference-reading/tipsandtricks on the subjects of Linux, Microsoft Windows, Wi-Fi, Security, Wireshark, IPv6 and more
  • Numerous Articles in the CellStream, Inc. Company Newsletter, Company Web Site, Company Blog: https://www.cellstream.com/reference-reading/cellstream-blog
  • “Telecom 101”, an 8 hour in person or online, self-paced course plus a certification version
  • “Data Networking 101”, an 8 hour in person or online, self-paced course plus a certification version
  • “IPv4 Addressing 101”, an 8 hour in person or online, self-paced course plus a certification version
  • “IPv4 Routing 101 – the basics of RIP, OSPF and BGP”, an 8 hour in person or online, self-paced course plus a certification version
  • “Ethernet 101”, an 8 hour in person or online, self-paced course plus a certification version
  • “Wireshark 101”, an 8 hour in person or online, self-paced course plus a certification version
  • “Getting to Know IPv6”, an 8 hour in person or online, self-paced course plus a certification version
  • “OSPF Routing in a Day”, an 8 hour in person or online, self-paced course
  • “BGP Routing in a Day”, an 8 hour in person or online, self-paced course
  • “Hands-On TCP/IPv4 Fundamentals”, a 2.5 day instructor led skills-based course
  • “Hands-On TCP/IPv4 and Ethernet Fundamentals”, a 3 day instructor led skills-based course
  • “Hands-On TCP/IPv4 and Ethernet Fundamentals”, a 5 day instructor led skills-based course
  • “Hands-On Advanced IP Networks and Protocols”, a 2.5 day instructor led skills-based course
  • “Hands-On Advanced L3 Routing with BGP and OSPF”, a 2 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark - WLAN Edition”, a 2 day instructor led skills-based course
  • “Wi-Fi/WLAN Operations for CSR's”, a 1 day instructor led skills-based course
  • “Hands On Wi-Fi/WLAN Operations”, a 2 day instructor led skills-based course
  • “Hands-On Understanding Security in WLAN/Wi-Fi Networks”, a 2 day instructor led skills-based course
  • “Hands-On IP L3-VPNs”, a 2 day instructor led skills-based course
  • “Hands-On Quality of Service”, a 2.5 day instructor led skills-based course
  • “Hands-On IPv6”, a 2 day instructor led skills-based course
  • “Hands-On IPv6”, a 3 day instructor led skills-based course
  • “Hands-On Advanced IPv6”, a 2 day instructor led skills-based course
  • “Hands-On Advanced IPv6 Security”, a 2 day instructor led skills-based course
  • “Hands-On Ethernet and IPv6”, a 2 day instructor led skills-based course
  • “IPv6 In a Day”, a 1 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark Standard Edition”, a 3 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark Standard Edition”, a 2 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark Data Center Edition”, a 2 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark Voice Edition”, a 2 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark WLAN Edition”, a 2 day instructor led skills-based course
  • “Explore Packet Analysis with Wireshark Hackathon”, a 1 day instructor led skills-based course
  • “Wireshark Voice Analysis in a Day”, a 1 day instructor led skills-based course
  • “Wireshark TCP Analysis in a Day”, a 1 day instructor led skills-based course
  • “Wireshark Voice Analysis in a Day”, a 1 day instructor led skills-based course
  • “Wireshark Voice Analysis in a Day”, a 1 day instructor led skills-based course
  • “L2 Ethernet in a Day”, a 1 day instructor led skills-based course
  • “Hands-On Wireless Networking”, a 2 day instructor led skills-based course
  • “Hands-On Border Gateway Protocol (BGP)”, a 2 day instructor led skills-based course
  • “Mastering AToM, VPWS/VPLS, and L2VPNs”, a 2 day instructor led skills-based course
  • “Mastering Generalized MPLS (G-MPLS)”, a 2-day instructor led skills-based course
  • “IP Multicast and IPTV”, a 2-day knowledge and exercise skills-based course
  • “Hands-On MPLS & L3VPNs”, a 2.5 day instructor led skills-based course
  • “Hands-On MPLS Traffic Engineering”, a 2.5 day instructor led skills-based course
  • “Hands-On MPLS Troubleshooting Skills”, a 2.5 day instructor led skills-based course
  • “Hands-On Advanced MPLS Functions”, a 2.5 day instructor led skills-based course
  • “The Basics of MPLS L2-VPN Services”, a 2-day knowledge and exercise skills-based course
  • “The Basics of AToM (Any Transport over MPLS)”, a 2-day knowledge and exercise skills-based course
  • “Multi-Protocol Label Switching (MPLS) 101”, a 1 day instructor led skills-based course
  • “MPLS 201 (MPLS Layer 3 VPN)”, a 1 day instructor led skills-based course
  • “MPLS 301 (MPLS Traffic Engineering)”, a 1 day instructor led skills-based course
  • “MPLS 401 (MPLS Layer 2 VPN, VPLS, VPWS)”, a 1 day instructor led skills-based course
  • “Network Science”, (co-authored) a ½ day course for engineering new hires at Cisco
  • “Evolving TDM to IP”, a 1 day seminar for Independent Telephone Companies
  • “From POTS to Pipes 1 – The Fundamentals of TCP/IP”, 1 day seminar for Independent Telephone Companies
  • “From POTS to Pipes 2 – The Fundamentals of VoIP and IPTV and Multicasting”, 1 day seminar for Independent Telephone Companies
  • “From POTS to Pipes – Front Office”, 1 day seminar for Independent Telephone Companies
  • “Building a Business Case for Voice and Video over IP”, (co-authored) a 1 day seminar for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Delivering IP Services with QoS”, 1 day seminar for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Anticipating Customer Needs and Wants”, 1 day seminar for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Enhancing the Customer Broadband Experience”, 1 day seminar for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Customer Service (CSR) Certification Program”, online certification courses (2) for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Technician (FSR) Certification Program”, online certification courses (8) for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Fiber to the Node (FTN) or WiMAX?”, (co-authored) , ½ day seminar for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “IP in 5 Years”, ½ day seminar for Independent Telephone Companies, Associations and Equipment Manufacturers
  • “Requirements Management using ReqPro/ReqWeb” – a five course series of hands on courses for development engineers
  • "Understanding MPLS", a two day instructor led knowledge-based course
  • “Understanding MPLS BGP VPNs”, a two day instructor led knowledge-based course
  • “Understanding Quality of Service”, (co-authored) a two day instructor led knowledge-based course
  • “Understanding IP over Optical Networks”, a two day instructor led knowledge-based course
  • "Basic Data Networks", a live 3 hour tele-course Developed for TRA/USWEST Air U, Seattle, WA, September 1998.
  • "Day One - Lucent and Ascend Integration", an external "webinar" produced for Lucent/Broadcast.com, June 1999.
  • "Day One - Lucent/Ascend Product Offerings", a detailed internal "webinar" for Lucent Sales/Marketing, June 1999.
  • "Asynchronous Transfer Mode", a CD-based e-Learning (video, audio, text, slides) for TRA, June 2000
  • "Advanced Asynchronous Transfer Mode", a CD-based e-Learning (video, audio, text, slides) product for TRA, July 2000
  • "Understanding MPLS", a CD-based e-Learning (animation, text and slides) product for TRA, July 2002

PROFESSIONAL EXPERIENCE

CellStream, Inc., Plano, TX

Apr 98 - Present

Condultant, Researcher, Trainer, President & Founder

Provide international and domestic telecommunications consulting, network design, and training services to major communications corporations.  Areas of expertise are in Telecommunications Systems and Technologies, Security, Transmission, Switching and Access systems. The focus of this expertise is in the Software and Computing technologies implemented in complex systems and networks including network configuration, advanced packet technologies (data, voice, and video), technology training, program/business development, documentation of new advanced products, program management and engineering support solutions.  Provide international and domestic telecommunications training seminars (usually 2 or 3 day, hands-on), public and private, in key subject areas: Security, Wireless, IP, MPLS, MPLS-TP, AToM, GMPLS, IP over Optical Networking, xDSL, Voice over IP, Traffic Engineering, QoS and others. Provided complete system architecture/design for an MPLS core for a major WISP in Oklahoma and partial designs to two other major service providers. Generate white paper and technical documentation using state of the art tools and methods.  Provide consulting, research (claims charting), and testifying expert witness services in areas of intellectual property, telecommunications, systems (hardware and software) engineering and design.

 

DSC Communications Corporation, Plano, TX

Feb 97 – Apr 98

Senior Director of L2 ATM/Frame Relay Group

Primary responsibility to develop L2 ATM/Frame Relay program with rapid cycle time focus while minimizing expenditures using object oriented design and processes.  Responsible for program plan, team assembly, and product P&L. Delivered proof of concept on schedule/budget and product/ network management approach that has been demonstrated to fully align to customer network requirements and desires.  Mastered ATM/Frame Relay voice and data interworking requirements and assisted in establishment of OEM arrangements and agreements for software, hardware and partner corporations. Considered the primary program architect for the project.

 

DSC Communications Ltd., Feltham, Middlesex, UK

Dec 95 - Feb 97

Senior Director Engineering

Promoted to lead and manage a major engineering program for Wireless Local Loop product with staff of 70 people including hardware, software, RF, systems engineering, test and 'greenfield' operations.  Assignment was an expatriate based in the United Kingdom. Product is point to multipoint CDMA/spread spectrum technology based telephony bypass utilizing latest custom ASIC, processor and DSP technologies and OO software design.  Successfully gained British Telecom acceptance of product leading to orders in excess of $90M. Instituted new methodologies for project/program performance tracking based on cycle time performance demonstrating time and cost to complete metrics.  Produced a product future vision concept and program plan including a number of patents in this area of technology.

 

DSC Communications Corporation, Plano, TX

Aug 94 - Dec 95

Program Director

Promoted to Director to be primary program manager in a rapid development project to produce an international Access Division Digital Loop Carrier product: Litespan 120.  Primary contributor in developing product definition, product launch, rollout plans, P&L forecasting, project and business plans. The product was a 120 line primary MUX/ODLC product with electrical and optical network interfaces using V5.1 concentration techniques. Record of program delivery on-schedule, under budget.  Resulted in initial sales in excess of $4.5M.

 

DSC Communications Corporation, Plano, TX

Mar 92 - Aug 94

Senior Product Manager

Promoted to Senior Manager responsible for all project and program management on Integrated Multiservice Transport Node (iMTN 4/3/1/0 cross connect program using full custom ASIC and OO design using SmallTalk).  Acted as primary interdepartmental Launch Team chairperson. Led to a Co-chair Technical and Program Committee position with two international collaborations for combined SDH and SONET standards. Delivered initial international customer for the product and managed a collaboration with UK based company to provide network solution.  Developed and implemented Product Life Cycle Process. Primary interface to Bellcore for Technical Auditing/Analysis.

 

DSC Communications Corporation, Plano, TX

May 89 - Mar 92

Product Manager

Responsible for DEX ECS3 (3/3 cross connect) and DEX ECS1 (3/1 cross connect) products.  Successfully attained product acceptances at MCI and other major carriers and RBOCs. Managed cost reduction and feature enhancement projects.  Responsible for all project/program status and performance and customer interface to development organizations. Architect of plans to reduce inventory 60% improved cycle times by 200%.

 

Reuters Information Services, Los Angeles, CA

Oct 86 - May 89

Regional Manager

Directed all Field Service, Customer Service, and Data and Voice Network Operations activities for the North American Western Region supervising a staff of twenty-one.  Established 24-hour service procedures and customer contracts. Developed strategies and technical implementations for private CATV Broadband network in downtown San Francisco.  Created and implemented fully automated trouble reporting system. Implemented new point-to-Point based digital data network replacing loop-based system improving availability. Reduced costs, improved service quality by reported 100%.

 

Equatorial Communications Company, Mountain View, CA

Aug 79 - Oct 86

Satellite Network Supervisor/Engineer

Conducted the initial design and installation of the Satellite Network Control Center specializing in VSAT spread spectrum technology. Established and composed all Standard Operating Procedures for the two-way communications networks operating on Galaxy and Westar satellites. Moved  up the technical ladder through the following positions (latest to earliest): Network Supervisor, supervised 10-18 controllers, engineers, and support personnel in high pressure environment; Product Support Specialist, providing training/support to nationwide service organization, composed service manuals and methods of procedure, developed and engineered two RF products for the company; Senior Field Engineer, served as lead engineer for eastern region, implemented MTBF failure tracking system and Mean Time to Respond goals and measurement system for field service operations; Field Engineer, responsible for 101 accounts including multi-user CPM systems, satellite earth station service and installation.

 

EDUCATION and CERTIFICATION SUMMARY

  • University of Hartford,  Electrical Engineering – 2 yrs
  • Collin College, AA Business Administration
  • University of Colorado, Communications Technology Analyst  
  • National Association of Communications Systems Engineers, NTT1 Certification
  • National Management Association, Certified Management Skills
  • Cisco CCNA Certification (expired)
  • Cisco MPLS Certification (current)
  • Silver IPv6 Engineer (current)
  • CBRS Certified Professional Installer (current)
  • Cyber Security - CISSP Certification (current)
  • Cyber Security - Certified Cloud Security Professional (CCSP) (current)
  • Cyber Security - AWS Sysop Associate (current)
  • SNAGIT 2021 Certification

 

PROFESSIONAL ASSOCIATIONS

  • Former Member of Society of Communications Technology Consultants (SCTC)
  • Member of the Dallas Hackers Association
  • Member of KIWANIS International
  • Member of the National Management Association; Management Skills Certificate in 1993
  • Member of the International Who's Who of Entrepreneurs - 1998/99/00/01

 

LEGAL MATTER EXPERIENCE

  • Alcatel v. Cisco, Cisco v. Alcatel, Alcatel v. Cisco (cases involving a) the alleged stealing of intellectual property, trade secrets and software code, b) anti-trust)
  • BMC Software v. Crabby Hacker (case involving the alleged stealing of software code)
  • Fenner v. Dell, Hewlett-Packard (case involving infringement of multiple Patents)

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