DD>>> I have a mail downfeed out on the Darling Downs.  He has 

DD>>> some sort of Rockwell based V.FC modem.  When he rings the 

DD>>> Courier or the Sportster he usually gets a 19,200 V.FC 

DD>>> connect. 



BG>>> Looks rather bad from the POV of his lines then, I'd 

BG>>> suspect.



AWL>> If its Tony, his lines should be very good (after all the 

AWL>> badgering of telescum he did over the last few years)...



 DD>> In that case his modem needs an upgrade!



 DD>> # 19 Mar 05:22:26 BINK Ring

 DD>> # 19 Mar 05:22:40 BINK Connect 19200/Arq/Vfc/Lapm/V42Bis

 DD>> * 19 Mar 05:22:42 BINK The BauderLine BBS 

 DD>> (3:640/450{at}fidonet) * 19 Mar 05:22:42 BINK Remote Uses 

 DD>> FrontDoor 2.12.SW/F1234567

 DD>> ...

 AWL> [chomp]



I see that it is a VFC link.

VFC wil only use the lowest side of the link rate for its connect

rate. (and this might well be 19200)  Here is a quote:



Ä USR MODEMS ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄMatrixÄ

Msg  :  194     [1-250]                                                         

From : Craig Ford                          24-Mar-96  17:45:19  1:106/2001

To   : Dave Easton                                              3:640/305

Subj : Question-sports Ati 6/11

ÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄÄUSR_MODEMSÄ

 DE> I am not clear on my Sporster V.34+ ATI 6 readout. Down at the end

 DE> where it says "speed" and gives two figures - which one is the 

 DE> outgoing and which one is the incoming speed?



Excerpted from "Interpreting the USRSTATS Report":



    Speed - This field indicates the current bit rate of the connection, in 

    Bits Per Second (BPS).  For normal V.32/bis/terbo AND VFC modulation, a 

    single speed will be displayed since those protocols require the        

    receive and transmit channels to always run at the same speed.  This is 

    an important point, because it means that both channels are limited to  

    the speed of the LOWER of the two directions.  USR's ASL feature        

    enhances the V.32/bis/terbo protocols by allowing the transmit and      

    receive channel speeds to be adjusted independently, maintaining        

    maximum throughput in each channel regardless of the
"direction" of the 

    channel impairments.  In this case, two speeds will be displayed, which 

    are the Receiver and Transmitter speeds, respectively.  Other fields in 

    the Data Pump Group which display 2 values follow the same convention   

    of Receiver/Transmitter.                                                

    ----------------------------------------------------------------------- 

    This concept of independent channel speed is an integral part of the    

    V.34 protocol, and is one of the key improvements over VFC.             

    ----------------------------------------------------------------------- 



...chomp...



The modem's capability of operating at signalling rates above 28.8kbps does not

gurantee that such rates will be achieved. Achievable signalling rates are

dependant on the characteristics of the channel over which the modems operate.

In addition to bandwidth, the channel must also have adequate signal to noise

ratio. For rates above 28.8kbps, not only is 3200hz of bandwidth required, the

signal to noise ratio of the channel must be better than ~37.5dB.



Regards....



Craig

aka: cford{at}ix.netcom.com



--- timEd/2 1.10+






 AWL> Hmmm... I wonder what gives. I'll forward this to Tony to make sure he 

 AWL> sees it.

 AWL> (I almost didn't, some people seem obscessive about gigabytes of stats 

 AWL> ;-)







Russell

--- Terminate 3.00/Pro