HM>> Symbol rate          = 3200

 TC>  

 HM>> The bandwidth and echo aren't too good, I got up to 3825Hz and
1ms to my 

 TC> 

 HM>> university, which is in the city (20km) while Paul is out this side of 

 HM>> town, quite a bit closer.



 BG>> Dunno, I'd be very interested to see how a Courier performs 

 BG>> from your site.  With those levels and bandwidth, you 

 BG>> should be seeing a 3429 symbol rate.

 TC>  

 HM>> Unfortunately those stats don't seem to include the connect
speed, which 

 TC> 

 HM>> was 31200 RX / 26400 TX. Haven't had 33.6 yet.



 BG>> And with 3200 symbol rate, you won't see 33k6 anyway, as 

 BG>> that requires the 3429 symbol rate.  3:640/305 is a good 

 BG>> test, as Dave can just about spit on his exchange from his 

 BG>> back door, and even with my poor lines, I'm getting 33k6 

 BG>> connects with his Courier (usually 33600/31200).



 TC>  Supra will not connect to Courier at 33.6 according to Supra Echo

 TC>  contributor:



This is very had to believe. In my experience:

Supra 288i modems were the only Rockwells ever, to connect to Couriers

at 28800 with a full 3300cps every time

Most other rockwells connected at 26400



The 33600 supra is only an extension of the 28800, it should follow

that the supra has higher throughputs to a courier that any other rockwell



 TC> If the calling modem is a USR Courier then the Symbol rate of 3429 is

 TC> obtained and a 33600 connect is possible.

 TC> BUT if the Supra is the Calling modem then the USR defaults to 3200

 TC> Symbol rate and the maximum speed is 31200.



This is a bandwidth limitation on the telco line (exchange) that the Supra is

dialing from or to.

It is not the supras fault or the couriers fault.



Modem manufacturers technology is way ahead of Testrapathy's



The only thing that stops 2 modems talking at full steam is the line

between them.



 TC> I think USR does know this (or they will soon) and hopefully we should

 TC> see a .SDL flash update for them though they could be waiting for the

 TC> ITU to approve the V34+ first before doing anything..



As I said, It is not the modem manufactures problem, it is a telco

problem.



I will prove it by connecting a supra 33600 (if I had one) to a

courier 33600 via 2 metre modular phone cable and doing a line probe.



 TC> I have about 5 Courier around me here (within 10 miles) all connect

 TC> with the 3429 rate to me but when I connct to them I get a 3200 rate.



They are all closer to there exchanges to you and have better bandwith than

you (maybe later model exchanges and shorter copper runs)



example:



I connect to JabberWOCky with a 3429 symbol rate all the time.



Bill Grimsley also connects to JabberWOCky with a 3429 symbol rate.



Bill and I both get 33600/31200 connects to David

(We download from him at 33600 throughput rates...3850cps & up,

and upload to him at 31200 thoughtput speeds)



This meaans that both our exchanges and line are capable of it....

if there is at least one user right next to their exchange (which is

David.)



I am 2 or 3 km from my exchange and Bill is argueably further.

and we have only ever got 26400-31200 connects and throughput rates.

between each other.



Earlier this year I spent 2 months in Mossman FNQ (1800km from David)

and connected 2 & 3 times a day, every day at 33600/33600 BOTH WAYS

because we were both only a few doors down from our exchanges.



Summing up, the only common factor with great 33600 conneccts all the

time, is the closeness of the exchange. (less voltage drop)



Russell



--- Terminate 4.00/Pro