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Normal Sequences Network Job Entry (NJE) Formats and Protocols SA32-0988-00 |
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Presently, when no data is being transmitted or received on a given
link, a null-buffer is transmitted every one to two seconds. This
is shown for BSC below. (The CTC adapter normal CCW chain is similar,
except that the read CCW is preceded by a control command and the
write by a sense.)
Figure 1. BSC
Normal Communication
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Copyright IBM Corporation 1990, 2014
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