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synchronous payload envelope (SPE)

The SynchronousPayloadEnvelope (SPE) transports a portion of the STS signal in Synchronous Optical Network (Sonet). It is used to transport Tributary Units (TU) over synchronous networks such as Synchronous Digital Hierarchy (SDH). Most often, this signal is assembled at the network access point and disassembled again at the network end point.

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Englisch: synchronous payload envelope - SPE
Updated at: 12.07.2011
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