S110 - V.32/V.32bis Selector
Description
The V.32 and V.32bis carrier handshake procedures are compatible. The
rate sequence contains bit combinations that specify which procedure is
used. Register S110 provides control of that selection for those who want
to limit carrier handshake procedure to that specified by V.32 or to disable
automatic rate re-negotiation (rate changes initiated by the modem based
on signal quality).
When the value of S110 is 0, the V.32 handshake procedure is followed, rate
re-negotiation (which is allowed by V.32bis) is disabled, and the &U command
determines whether or not trellis coding is enabled.
When the value of S110 is 1, the V.32bis handshake is enabled, but not automatic
re-negotiation. The modem responds to a rate re-negotiate request from the
other end, but tells the other end that only the current speed is available.
When the value of S110 is 2, V.32bis handshake is enabled and automatic
rate re-negotiation for V.32bis, V.FC, and V.34 are enabled.
Type
value
Range
0-2, Default value: 2
Stored by &Wn
yes
Displayed by &V
yes
Values
Value Description
0 V.32 enabled
1 V.32bis enabled
2 V.32bis and automatic rate re-negotiation enabled
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