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Handshake
Sequence
Preliminary tests show that, on average, connect times are 30
percent to 40 percent faster with V.92 than with V.90. ISPs will benefit from
the timesavings because they log millions of sessions every day. The quick
connect V.92 feature works by “training” the client modem on the
first call. Analog characteristics and digital impairment information are
captured in a profile stored on the local disk drive or, for external modems,
in RAM. The V.92 modem looks for this local profile and checks whether the
server modem is V.92-capable. If it is, the V.92 modem proceeds with the quick
connect handshake.
Click below to compare
the standard V.90 handshake sequence (approx. 25 sec) with the new V.92 quick
connect handshake sequence (approx. 12 sec).
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