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IBM System z Connectivity Handbook by Zhaoxu Zhang, Hans Wijngaard, Esra Ufacik, André Spahni, Vicente Ranieri Jr, Frank Packheiser, Fernando Nogal, Swee Seng Ng, Gerard Laumay, Octavian Lascu, Parwez Hamid, Wolfgang Fries, Ivan Doboš, Karan Singh

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Channel-to-channel
This chapter describes channel-to-channel (CTC) connections for the zEC12 using FICON channels, and for zEnterprise CPCs and System z10 using ESCON and FICON channels to interconnect servers and logical partitions.
6.1 Description
The channel-to-channel function simulates an input/output (I/O) device that can be used by one system control program to communicate with another system control program. It provides the data path and synchronization for data transfer between two channels. A loosely coupled multiprocessing system is ...

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