1-31-94                  Forced Connect
        - - - - - - - - - - - - - - - - - - - - - - - -
    Normal  INIT for modems on a PC AT&F&C1&D2  Sometimes, even though  the
modem seems to get a good connect (usually with hi-speed modem) it does not
actually make the connection correctly. (It may be the OTHER end making the
error). Often if you use one of the (prefix) strings to force that  connect
speed  the  connection will be made 'solid' on both ends. Use  your  normal
Init string (commonly AT&F&C1&D2 for a PC).  Or you may use the section  of
the  below strings (between the AT...DT) added onto your Init string.  Such
as.. AT&F&C1&D2&Q6N1
   The  normal dial Prefix is ATDT. If the number is 423-1563 then it sends
ATDT4231563  to the modem, which then  dials, and connects. This  is  using
auto-speed  (baud) negotiation as well  as negotiating  Protocol  (V.42bis,
MNP  etc.). Some modems/software without V42bis/MNP you  will call  do  NOT
like this. Use a prefix w/&Q6 in it.

AT&Q5N1DT           :negotiates SPEED and Protocol (default)
AT&Q6N1DT           :negotiates SPEED only  AT&Q5S37=11N0DT     :*Connect 14400, negotiate Protocol 2
AT&Q6S37=11N0DT     :*Connect 14400 only 2
AT&Q5S37=9N0DT      :*Connect 9600, negotiate Protocol
AT&Q6S37=9N0DT      :*Connect 9600 only
AT&Q5S37=6N0DT      :Connect 2400, negotiate Protocol
AT&Q6S37=6N0DT      :Connect 2400 only
AT&Q6S37=5N0DT      :Connect 1200 only
AT&Q6S37=1N0DT      :Connect 300 only
                 * for all V.32 modems     2-for V.32bis modems
NOTE 1: The above strings are using buffering which allows the computer  to
have  a higher speed than the modem. If you still have trouble try  &Q0  in
place of &Q6 and set your computer speed the same as the modem speed.

NOTE  2: I discovered when a user couldn't connect to a 300bps modem,  that
if  I  did AT&F (set &C0&D0) before using the dial prefix,  then  it  would
connect. This is worth a try on stubborn 1200bps modems too.

NOTE 3: If none of these work, fax me the number and I will test it to  see
if I can get a connect, and at what speed.

NOTE  4: The new LC (Low Current) modems use the command Fx (F1 F2 etc)  to
set modem speed. Replace the S37=xNx commands above with the Fx. (see  your
manual for speed)

NOTE:  5  If  you  try to force a speed higher than  the  other  modem  can
connect,  you  will get NO CARRIER. Set your modem speed  to  the  software
speed  just above the modem's highest speed (14,400 set 19,200 - VFast  set
38,400) and let the modem negotiate whenever possible.

              Connect result messages / modem speed
     S95=0   gives  you  CONNECT (modem to computer  speed).  If  you  need
CONNECT speed the same as CARRIER (modem to modem) use S95=1. When  running
a  BBS,  try  S95=3 and you will get only CONNECT (carrier)  message,  with
\ARQ for error correcting  modems.  Always set your 'speed' in your program
to  a  high  computer - to - modem speed (19,200 / 38,400). The  V.32xx  or
V.42bis modem will take care of modem to modem speed.
                                      Don Hinds - Zoom Tech
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