Sidney, at 22:30 on Feb 27 1996, you wrote to All...

SC> Here is an info screen of my USR modem, and I'm confused about some of the 
SC> jargon used, so could somebody please give me some definitions of the 
SC> words...

SC> First, I don't know what Blers and Link Naks are, and what Line Reversals, 
SC> Link Timeouts...  I know what retraining is though.  Also, Equalization is 
SC> Long, but what is Equalization?

Have a quote from the on-line Courier manual...

=======================================================================
Octets:  
         Compressed data units.  If the number of octets is greater than 
         the number of characters sent, the modems probably used MNP5 
         compression on an already compressed file, and the result was 
         expanded data.  

Line Reversals:  
         The number of times HST-mode modems switched the high 
         and low speed channels.

Blers:  
         Errors in data and protocol blocks.  If there were many block 
         errors, your receiver may have experienced problems on the line.

Blocks Resent:  
         These represent blocks the remote modem resent due to 
         the previous category, Blers.

Link Timeouts:  
         Protocol detection problems:  communications were 
         severed momentarily, and the modems probably recovered.  
         This does not indicate the retry timeout.

Link Naks:  
         Negative acknowledgments (one or more blocks).

Equalization Long/Short:  
         Status of S15 bit 0; long if bit 0=0, short 
         if bit 0=1.  Short equalization applies 
         only to HST modems.

Fallback:  
         Enabled/Disabled:  indicates whether or not the modems 
         negotiated online fallback during the connection sequence.
=====================================================================

SC> P.S. I had Fallback Enabled this time (with a V.FC connect, but I remember 
SC> all the previous connects at 28.8k or 26.4k had Fallback Disabled... so 
SC> does anyone know how to MANUALLY turn Fallback ON for the Sportster).

Either S15.1=1 or S15=2 will disable on-line fallback, although I would
strongly suggest that you leave it enabled.  Have another quote...

========================================================================       
S15    0     Bit-mapped register.  To set the register, see the 
             instructions for S13. 

             Bit    Value   Result
              0      1       Disable the modem's extra high-frequency 
                             equalization if it causes problems on 
                             shorter-link calls--modems only
              1      2       Disable online fallback
              2      4       Disable 450 bps back channel--HST only
              3      8       Reset non-ARQ mode Transmit buffer 
                             from 1.5K bytes to 128* 
              4      16      Disable MNP Level 4; retransmitting 
                             the larger Level 4 data blocks may be 
                             a problem if you expect a great number 
                             of errors during a call
              5      32      Set backspace key to delete
              6      64      Some earlier 2400 bps MNP modems, not 
                             made by U.S. Robotics or Microcom, 
                             were not fully compatible with the MNP 
                             protocol.  If you have difficulty 
                             making a successful 2400 bps MNP 
                             connection with a remote MNP modem, it 
                             may be because of this incompatibility.  
                             Set S15 to 64 and try again to make the 
                             connection. 
              7      128     Custom applications only
=====================================================================

Regards, Bill

--- Msgedsq/2 3.20