SONET

WHAT IS SONET? SONET stands for synchronized Optical NETwork. SONET/SDH is a synchronous fiber heart based guide order that includes inband network management and overlays the curtly existing asynchronous broad band network. SONET and SDH specify frequent standards for interfaces and protocols which allows the equipment from different vendors to achieve complete functional interoperability in transmittance data over fiber optic cables. WHY IS SONET important? SONET provides integrated, large bandwidth, high speed transport for electrical guides much(prenominal) as ATM, BISDN, SMDS and Frame Relay. This transport data format also reduces bread and cover functions while providing greater flexibility, control and centralized management of the network. The SONET/SDH format can carry multiple bespeaks simulteanously using a modify optically based transmission architecture at smallish cost than copper wires. apotheosis Properties: SONET Frames: The basic SONET Frame decomposable body part is kn stimulate as STS-1 or Sychronous Transport Signal take 1. It has a basic set up rate of 8,000 frames/sec = 51.84Mb/s. The frame length is 9-rows by 90-columns of octets - nitty-gritty frame size 810 octets. The start three columns are transport overhead, while columns 4-90 are the SPE - Synchronous Payload Envelope with effective transport speed of 50.112Mb/s. SONET Layers in that location are 3 socio-economic classs that control the transport functions in the SONET frame.

The startle degree is the separate layer that moves data across the media (OSI - 1). The back up layer is the Line layer which maps the p! ayload into the electrical STS signal to trip out to the peer terminating network elements (OSI - 2). The third layer is the racetrack layer which maps sevices into the preliminary payload prior to STS frame. (OSI - 3). Virtual Tributaries SONET framing incorporates pass up rate signals (less that DS3) into subdivisions of the STS payload. The VT (Virtual Tributary) functions as a separate signal with its own overhead bits. They can be locked or... If you want to cut a full essay, order it on our website: OrderCustomPaper.com

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