Handshaking State
In the Handshaking State the modem may be sending answer tone, waiting
for answer tone, or handshaking with another modem. The modem enters Handshaking
State when one of the following occurs:
- Completion of Dialing Process
- Modem autoanswers
- DTR OFF-to-ON transition when &Q3 is
in effect
- Power is turned on in the dumb leased-line mode
- +FCLASS=0
The handshaking process can be running in the originate mode or the answer
mode. Refer to the &Dn command for more information.
The handshaking process is timed twice by the time specified by register
S7. If answer tone is not detected within the specified time after the handshake
process starts, then the process will exit to the hang up process. The timer
is reset when answer tone is detected. If the modem does not finish handshaking
with the distant end within the specified time, then the modem exits to
the hang up process.
The following controls the line speed that the modem attempts to connect:
If all of these have their default values, then the modems attempt a line
speed that is determined by their AT speeds. If S37 is not zero, then S37
selects the maximum line speed. (Refer to the S37
definition for more details.)
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