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Protocols Common to BSC and CTC Adapters Network Job Entry (NJE) Formats and Protocols SA32-0988-00 |
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During the I/O suspension period, either side may optionally set
a timer for some reasonable interval (5 to 15 minutes) and, when the
time expires, transmit a null buffer to determine if the other system
is still operational. If the other side does not respond, the link
is taken down by normal error recovery procedures.
Figure 1. CTC Adapter
Communication in PREPARE Mode
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Copyright IBM Corporation 1990, 2014
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