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IBM z Systems Connectivity Handbook by Bill White, Frank Packheiser, Ewerson Palacio

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Enterprise Systems Connection
This chapter describes the Enterprise Systems Connection (ESCON) channel feature that provides information about ESCON I/O connectivity by using fiber optic technology. The ESCON channel feature is not supported on the IBM z13, zEnterprise EC12 (zEC12), and BC12 (zBC12) systems.
This chapter covers the following topics:
ESCON modes and topologies
ESCON elements
ESCON connectivity
3.1 Description
ESCON provides half-duplex serial-bit transmission in which the communication protocol is implemented through sequences ...

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