SONET

. Specifying, architecting and designing SONET OC-3c/STM-1/PCI and channelized OC-3/triple HSSI/PCI backbone node link modules which allow the transport of Frame Relay or PPP data link layer frames over SONET/SDH Private Line Service networks. In OC-3c mode, this product will be sold into CPE and ISP markets; in channelized OC-3 mode, to the true carrier market (protection switching, NEBS and BITS compliance, data communications channel, both line and section, and single and dual rings make the product suitable for LEC central offices and the larger ISP's). This will be one of the earliest, if not the first, implementations of native (as opposed to encapsulated) frame-relay over SONET/SDH and of IP/PPP over SONET/SDH.

. Specifying and designing a 10/100 Mb ethernet/ATM/OC-3c switching module, including LAN emulation, to uplink virtual fast ethernet to ATM/SONET networks, including UNI 3.0, 31 and 4.0, traffic shaping and full MIB (SONET, ATM, ILMI, MIB-II)

. Designing SONET OC-192 backplane and timing circuitry for high speed telecom backbone product

. Designed OC-48 line card for a 20 Gb/sec ATM backbone switch

. Participated substantially in every aspect of the development of SONET RING PRODUCTS (add-drop multiplexors, DACs, etc.) since before SONET was approved as a standard. Designed and implemented semi-custom ICs and ASICs, board-level circuitry, protection switching hardware and firmware, alarming and other management subsystems and Data Communications Channel (DCC); ported the ISO stack, create board- and device-level emulation systems so that firmware could be broudht up before ASICs were available, etc. for several dual-fiver/bi-directional and other OC-3, OC-12 and OC-48 products (DDMs, FTs and others).

. Designed backplanes, timing and other circuitry for several OC-12 metropolitan area network (MAN) multiplexers for a leading telecommunications product manufacturer

. Designed circuitry and software for OC-48, OC-12 and OC-3 ATM products. 

. Specified, architected, designed and/or manufactured ATM, frame relay, FDDI, ISDN, token ring, ethernet, PCI (several speeds and "flavors"), MVIP, Fiber-channel, MPEG-2, T-1/E-1, T-3/E-3, DS-0, DS-1, DS-3, OC-1, OC-3, OC-12, and other interfaces and line cards. 

. Specified, architected and/or developed all or part of four separate T-1/T-3/frame relay/ATM/SONET access multiplexers for four separate clients, including the architecture and implementation of fault-management, call-processing and other software subsystems.

. Performed substantial architectural, system and subsystem specification, including specification of optical DS-0 and OC-1 extensions to high-capacity network backbone switches

. Ported the ISO stack and wrote many Layer 7 applications for inter- and intra-central office network management of SONET multiplexers (CMIP, ASN.1)

. Developed a database to archive alarm information in a SONET terminal/repeater

. Specified, architected, designed and manufactured the SONET OC-3c/ATM/MPEG-2 multiplexer that went into the first commercially-deployed video-on-demand system in the world. This was done on a total turnkey basis, in six and one-half months, including the manufacturing. All our customer, a leading telecommunications product manufacturer, provided was a draft requirements document. Timely delivery of this product resulted in our customer winning a $150 Million initial order for end-to-end Video-On-Demand systems from a major cable MSO.

. Specified and architected an MPEG-2/AAL-5/OC-3 (with an OC-12 follow-on version planned) Video-On-Demand server multiplexer, essentially a "mirror image" of the video multiplexer mentioned above, including an algorithm which optimizes bandwidth utilization and minimizes jitter propagation to the set-top, substantially reducing per-stream cost.

. Specifying and architecting a 622 Mb ATM-in/18 X 28 Mb MPEG-2 channel-out Video-on-Demand multiplexer/"Interactive Cable Gateway" (which also routes IP traffic when the channel isn't occupied with MPEG-2) on a single card which plugs into several different router platforms for deployment in cable head-ends. As of this writing, this architecture represents the lowest cost per port and per video stream in the industry, and the highest port density available, as well as the first-in-the-world implementation of MCNS, an encryption algorithm devised by the MSO's to protect their MPEG-2 payloads. 

This card does ATM reassembly, dynamic PID remapping, MPEG dejitterization (KSA's V.P. of Engineering, Ron Todd, was the first to dejitterize an MPEG-2 signal across the public network, per the ATM Forum), IP insertion into MPEG private data, LAN emulation, routing to appropriate output stream, SNMP management via a MIB and contains the first-ever implementation of MCNS.

Scalable - a chassis can be configured for from one to 20 OC-3c equivalents (in increments of one OC-3c), resulting in initial low cost with an easy upgrade path. A stand-alone version would allow fine-grain scalability (per OC-3 or OC-12, not per ATM switch), which would be more cost-effective in smaller installations, or in initial installations that will expand over time.

. As of this writing, KSA is specifying and architecting, with our customer's stated intention to award us the design implementation and manufacturing, several head-end subsystems, all DVB-compliant, of a Switched Digital Video system, including an MPEG-2 encoder module; a multi-channel Variable Bit Rate (I-Frame and IPB-Frame) MPEG-2 encoder bank which accepts NTSC and PAL, analog and digital satellite feeds, real-time digital video, stored MPEG-2 and local ad insertion; an MPEG-2 decoder module; an MPEG-2/ATM multiplexer/remultiplexer; DS3 and OC-3 transport modules/line interface cards; and an SNMP-based network management system 

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