2-8-95                        S95 Register

     By  default  S95=0 gives the computer-modem (DTE)  connect  speed.  So
whatever  speed  (19,200   38,400   57,600) you have set,  the  modem  will
respond  in kind, even if the modem-modem connect is 2400. S95=1 will  give
true  modem-modem connect speed (DCE), ie; a 2400 CARRIER will say  CONNECT
2400.  If  you  use  the CARRIER as the CONNECT speed,  you  MUST  set  the
software  to NOT FOLLOW the CONNECT speed! S95=2 will add /Arq  to  default
for  error correction connections, ie; CONNECT 19,200/Arq. S95=3 will  give
modem  connect  speed  with /Arq  ie; CONNECT 2400/Arq.  If  your  software
recognizes /Arq it may be a good idea to add it, via the S95 register. Use 
INIT of AT&F&C1&D2  (Mac &D0).

     You  can check speed after you are online. Type +++ and wait  for  the
OK.  Type ATO to go back online and you will see your  CONNECT  information
(according to S95 you have set).  NOTE: a high-speed modem does a  =f=a=s=t
beep-beep-beep  along with the 'whine' when it answers. If you hear ONLY  a
steady tone when it answers, it is NOT a high-speed modem!

>>>NOTE:  When the modem gives DTE (computer-modem) connect speed, if  your
software shows 'efficiency' of transfer, it will be LOW. If the modem sends
CARRIER  (DCE)  as connect speed, then 'shown' efficiency  should  approach
100%.

     If  you  want the Carrier, Protocol & Compression, with DTE  then  use
S95=44. To get the same with DCE speed, use S95=45. You can add 2 to either
(46  or  47)  which will add the /ARQ, but as you already  have  the  other
messages it is redundant.

     The  default S36=7 enables buffering so that the modem-computer  speed
may differ from the modem-modem speed.

>>NOTE<< Except for QMODEM, all the software I have seen does NOT show  any

protocol messages beyond CONNECT xxx/ARQ. You can see the results if you do

Atdtphonenumber in Terminal mode.


                                   Don Hinds - Zoom Tech
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