In a prompt explanation of Lsppp switches Heimo said,

>  This /B switch is definitely for for the _port_ setting - the "real",
>  inter-modem speed is negotiated between the modems, and by them.  But if
>  your port setting is too slow, you get lots of errors and retry/resend
>  requests.  That could be it.

However in the Lsppp dialer documentation, /B is described merely as
``sets the baud rate''. The use of the word ``baud'', usually used to
talk about modem speed led me to think this set modem to modem speed.

I find countless software that talks to the modem's port and/or the modem -
windows com settings, dialers, packet drivers, terminal emulators, fax
programs, telnet programs -- has some setting or option that sets either
the com port speed or the modem-to-modem speed. Then, of course there is
also a setting to set the modem init string, which also can set the
modem-to-modem speed or how it is negotiated (e.g., at&F). There are
also tools, (e.g., comtool the mode command) to set the com port speed
before you use this software.

Often enough which of the two speed is being set is described ambiguously
by the software, the software can signal the com port or the modem
at any time, and last command to these hardware devices wins. That is,
the last command to the com port or modem will set the final speed used
by the device.

In the face of this, I am never sure what speeds my hardware devices
are actually set to after a modem connection and, for instance,
packet driver connection are negotiated. I idly wish the software would
make its settings more clear. I suppose I can query with modem after the
connection with +++ and hays commands.

How can I query the com port for speed AFTER a connection is made?

Is there some reliable way I can set these speeds to the correct values
(e.g.,  115200 and 57k) after the software had had its way with my
hardware?

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