SONET

WHAT IS SONET? SONET stands for synchronized Optical NETwork. SONET/SDH is a synchronous fiber centre based jinx order that includes inband network management and overlays the before long existing asynchronous broad band network. SONET and SDH specify ordinary standards for interfaces and protocols which allows the equipment from different vendors to achieve complete functional interoperability in transmit data over fiber optic cables. WHY IS SONET of import? SONET provides integrated, large bandwidth, high speed transport for electrical guides much(prenominal) as ATM, BISDN, SMDS and Frame Relay. This transport arrange also reduces bread and butter functions while providing greater flexibility, control and centralized management of the network. The SONET/SDH format can carry multiple bespeaks simulteanously using a alter optically based transmission architecture at infinitesimal cost than copper wires. beguile Properties: SONET Frames: The basic S ONET Frame obscure body part is kn let 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 - correspond frame size 810 octets. The start three columns are transport overhead, while columns 4-90 are the SPE - Synchronous Payload Envelope with material transport speed of 50.112Mb/s. SONET Layers in that location are 3 beds that control the transport functions in the SONET frame.

The startle layer is the separate layer that moves data across the media (OSI - 1). The back up layer is the Line la yer which maps the payload into the electric! al STS signal to cast 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 abase 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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