JP> In my experience with 33600 modems (USR and 
 JP> Rockwells), I've never personally managed a 33600 
 JP> connect. I have connected Courier to M34F, Courier 
 JP> to Courier, generic Rockwell to M34F, yet I've 
 JP> never managed 33600. I've also never seen inbound 
 JP> 33600 connects. 31200 seems common, as does 28800.

 JP> This leads me to believe that a) none of the modems I have seen and 
 JP> used have quite got their acts together; or b) it's 
 JP> a matter of having an exceptionally clean phone 
 JP> line (close to an exchange -- at both ends) with 
 JP> which to connect.

 JP> I'm inclined to dismiss the former in favour of the 
 JP> latter. Maybe I'm missing something else here ...

I'm not close to my exchange yet can consistently get 33,600.  I'm off the
Wahroonga exchange,  AXE for years,  3km's away.
 
And the electricity people diging up my line then tapeing it together
probably doesn't help.

But I can always get 33,600/33,600 to a mate at Bondi Jn, just across the
road from his exchange.
 
The only modem I can't get 33,600 with is a Courier.
 
 JP> Someone's theory about 3429 symbol rates does not seem to hold water, 
 JP> as Ludi and I have connected at 31200, and our link 
 JP> diags show a 3429 symbol rate at both ends of the 
 JP> link. Still, 33600 has JustNotHappened.

The results we observed were consistent.  The 3429 was selected when you
called my Netcomm,  not the other way around, we got 3200.
 
3429 is necessary for 33,600,  but of course doesn't guarantee it.
 
The symbol rates are the same at both ends,  I don't think anybody has
implementations with split rates.
 
 
You should get some other modems onto you line,  different implementations
may have different successes for your particular conditions.
 
Ludi.
ludi{at}triode.net.au

--- Maximus 3.01