Synchronous Optical Network (SONET) and Synchronous Digital Hierarchy (SDH) refer to a group of fiber-optic transmission rates that can transport digital signals with different capacities. SONET is an ANSI standard for high-speed transmission of digital signals using fiber-optic technology. Officially recognized by the telecommunications industry in the late 1980's, SONET quickly gained popularity in the 1990's due to the high-speed rates, "five-nines" reliability, OAM&P, Quality of Service and the standardization (interoperability). An almost equivalent standard called SDH, Synchronous Digital Hierarchy, was also established by ITU shortly after SONET to address the slightly different digital hierarchies found in Europe, Japan, and the rest of the world. For the most part, SONET and SDH are equivalent.
Applied Micro Circuits Corporation announced the company's next-generation SONET/SDH framer/pointer processor devices, Drava (S4809) and Mura (S4819). The level of integration in Drava and Mura...
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Vitesse Semiconductor has introduced the VSC7350, the industry's first media access controller (MAC) which allows OEMs to support advanced Metro Ethernet services over both SONET/SDH and DWDM...
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Pushing performance limits for 10 gigabit per second (Gb/s) applications, Gennum Corporation (TSX: GND) has developed a line of receive optical sub-assembly (ROSA) products for high-speed data...
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EZchip has announced that it is shipping samples of its NP-3, 30-Gigabit network processor. The NP-3 is a scale-up of the NP-2 network processor providing higher performance and an enhanced feature...
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PMC-Sierra, Inc. announced the PM8310 TEMUX(R) 336, the industry's most integrated and scalable framer solution for next generation voice, wireless and router platforms. The TEMUX 336 uniquely...
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Equipment manufacturers will achieve significant power and space savings when using Broadcom's advanced SONET OC-48 and OC-192 chips. Broadcom offers a complete family of SONET transceivers that...
[from Broadcom] >>
The Infineon SOCRATES® family of single-chip SHDSL transceivers offers a range of single to multi-channel connectivity, and is fully compliant to ITU and ETSI SHDSL standards. Targeting...
[from Infineon] >>
Building on several generations of expertise, AMCC offers a comprehensive line of highly integrated SONET/SDH framers including pointer processors, Forward Error Correction devices, PDH / Data over...
[from AMCC] >>
Data traffic over SONET/SDH networks has increased dramatically. SONET/SDH systems are “multi-service” and more powerful, but also face a host of design challenges, especially in the...
[from Xilinx] >>
LSI offers a diverse portfolio of tributary aggregation devices aimed at processing data and voice into PDH and SONET/SDH transmission protocols. The aggregation devices provide integration related...
[from LSI Logic] >>
SONET/SDH remains the underlying transport technology used in carrier networks. Altera provides framing and overhead processing solutions, as well as complementary payload processing solutions....
[from Altera] >>
SONET networks transport both voice and data over long distances. Standard protocols include ATM for voice and data and HDLC or PPP for data transfer. However, each of these protocols introduces...
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This application note describes the ADN2891 evaluation Switches Functions Default Setting Options board. The ADN2891 limiting amplifier works as a data S1 PD_Cath AVDD NC quantizer for SONET,...
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A backplane connects cards in network systems. Most backplanes have parallel interfaces, such as versa module Eurocard (VME) or compact PCI. However, high-performance systems require serial...
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This application note provides details on how to combine Zarlink’s Digital PLL products with Zarlink’s ZL30406 SONET/SDH Clock Multiplier Analog PLL to provide a robust, ultra-low...
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The Telecom Bus Interface (TBI) is an accepted industry standard that is commonly found in SONET/SDH systems. It is a parallel interface used for chip-to-chip communication on SONET line cards.
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Exar Corporation released MetroXS -- an industry-first, carrier class 5G multi-service access reference design that achieves Ethernet and Resilient Packet Ring (RPR) transport over SONET/SDH...
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Lattice Semiconductor Corporation announced the availability of its PURESPEED™ I/O Burst Mode Receiver (BMR) FPGA Reference Design for Gigabit Passive Optical Networks (GPON). This reference...
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SFP+ is increasingly recognized as the best solution to bring the cost of 10GE more in line with the benchmark of 1GE. While the streamlined design of SFP+ significantly reduces the module cost...
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The MP1590B Network Performance Tester is capable of measuring IP networks up to 10 GbE using the Ethernet plug-in modules of the Anritsu MD1230A test system, as well as traditional functions...
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The Si5318 is a precision clock multiplier designed to exceed the requirements of high-speed communication systems, including OC-48. The device phase locks to an input clock in the 19, 39, 78, or...
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The AD8159 is an asynchronous, protocol agnostic, quad-lane 2:1 switch with a total of 12 differential PECL/CML compatible inputs and 12 differential CML outputs. The operation of this product is...
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The test and measurement industry has been on a roller coaster ride similar to that experienced by the network equipment and component manufacturers in recent years. The good news is that there are...
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