🚀 go-pugleaf

Roger <Roger@rogjack.demonSPAM.co.uk> wrote:

> How can I tell what speed I have negotiated with the modem on connection?
> OT/PPP always reports a connect speed of 57600 (impossible with my 33.6
> teleport platinum) which is the maximum possible with the serial port on my
> 5200.

This isn't the maximum serial port speed available on your 5200.  It's
the maximum serial port speed that you can select with a call to the
standard serial driver built into the OS.  The maximum serial port speed
available on you 5200 is exactly the same as any other Mac including the
original 128K thin Mac - 230400 bit/s internally clocked and 920000
bit/s externally clocked.  (admittedly the 8MHz 68000 Macs can't read in
data at anything over about 500000 bit/s no matter what you do - the
serial port really is too fast for those machines).

If you get FreePPP, you'll find that you can select a higher serial port
speed if you want to.  I find that using a serial port speed of 115200
bit/s on my Performa 475 gives me a significant speed increase when
compared to 57600 bit/s, also using a GV 33.6 modem.

> I know at times I am connected at a much lower speed and would like to
> disconnect and dial again, but there doesn't seem to be any way to confirm
> what's going on.
> 
> If anyone knows of any utilities to monitor connect speed I'd be grateful.

OT/PPP and FreePPP will both (I think) tell you what the modem has told
them.  In this case, your modem is set to report the serial port speed.

If you (in the case of OT/PPP) add w2 to the modem init string in the
modem script, you should get the telephone line speed reported.  You can
edit (a copy of!) the connection script with more or less any text
editor.

I use this init string with FreePPP and my GV 33.6 modem:

at &f1 w2 l0

Which gives me reliable connections (to a different ISP), connection
speed reports, and a quiet burst of jabbering from the moden during
connection negotiation.

The AT command reference you (probably) got with your modem has the
details of all the things you can do.

Rowland.

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