S97 - V.32 Late Connecting Handshake Timing
Description
During a V.32 automode handshake, the answering modem sends unscrambled
binary ones (USB1) for the time called Ta. The value of S97 sets the duration
of Ta. During the handshake, the originating modem waits a time, Tc, to
check for USB1. Tc = Ta + 0.1 s.
S97 only affects Ta and, indirectly, Tc. If an answer mode modem is set
to answer at 2400 bits/s, S97 has no impact on how long USB1 is transmitted.
If the automode handshake sequence repeats itself, as when V.21 and V.23
are included, then S97 affects all cycles. The factory default favors the
existing installed base of modems. S97 may have a value from 15 to 70. Each
unit of S97 corresponds to 0.1 s in Ta. Set S97 to 15 (1.5 sec) when compatibility
with V.32 late connecting modems is a primary requirement.
Type
value (15-70); Default value 30
Stored by &Wn
yes
Displayed by &V
no
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