connors@edinboro.edu (05/01/91)
Hello all... I had a couple of questions concerning modem trouble. A friend of mine recently purchased a Smart One 2400 baud external modem and for some reason cannot connect to some other modems. He has no difficulty connecting to the VAX at any baud rate, yet he cannot connect to any other modem (either directly or through a bulletin board) at 2400 baud and can periodically connect to some modems at 1200. What is most interesting is that he can at any time connect at 300 baud to anywhere! For this reason, it seems that their must be some compatability problems with modem pitches. Aren't there two or three different standards for the 1200/2400 pitches? I don't believe the problem is within the terminal programs...several have been tried on numerous different settings including the settings that work on my system. Thanks for any light you can shed on this matter!! connors@edinboro.edu
bill@twg.bc.ca (Bill Irwin) (05/09/91)
connors@edinboro.edu writes:
: I had a couple of questions concerning modem trouble. A friend of mine
: recently purchased a Smart One 2400 baud external modem and for some reason
: cannot connect to some other modems. He has no difficulty connecting to the
: VAX at any baud rate, yet he cannot connect to any other modem (either
: directly or through a bulletin board) at 2400 baud and can periodically
: connect to some modems at 1200. What is most interesting is that he can at
: any time connect at 300 baud to anywhere! For this reason, it seems that
: their must be some compatability problems with modem pitches. Aren't there
: two or three different standards for the 1200/2400 pitches?
I would be very interested in hearing about any progress you make
on this. We have just aquired two of these "Smart One?" modems
and am having difficulty getting them to answer reliably from
other brands.
They dial out and connect faithfully to other brands, and to each
other. The problem is getting them to answer calls from other
brands reliably. I believe the problem involves their error
checking protocol something.bis. I think they are trying to
establish a bis connection with the calling modem by sending
sounds that are confusing dumber modems.
I have good luck connecting to them if I use one of our Multitech
696E, I think because the MT is smart enough to recognize the
error protocol signals.
I would like to be able to turn this checking off with an S
register or AT command, but could find nothing in TFM referring
to this.
: connors@edinboro.edu
--
Bill Irwin - The Westrheim Group - Vancouver, BC, Canada
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