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56k X2?

C

cycleman77

Senior member
I am looking for an ISP in my area and found one that supports V.90,
Flex, and X2.
What the heck is X2? Is it better then V.90 or Flex? Is it compatible with the other two?
I've never heard of X2 before.
 
k56Flex was Lucent and the rest of the modem industry's version of 56K, and X2 was 3Com/US Robotics'. Eventually, the standard ov v.90 (and now v.92) were established, but there was a warring period of time when vendors and ISPs would fight over which "standard" to adopt, even though both were vying for the title and neither eventually got it (v.90 is a hybrid of the two).
 
OK.
So if I wanted to sign up with an ISP that only supported X2, then I could keep my V.90 modem and it will still work fine?
 
"I am looking for an ISP in my area and found one that supports V.90, Flex, and X2."

You say it supports all 3 standards including v.90 so I guess you answered your own question.

Or did you mean an ISP other then the one you said you found. If so then your modem would have to be whatever standard they support for max connect speed, altough you'd still probably connect just fine. I'd be hard pressed to believe that you found an ISP that's ONLY Flex or x2 (living in the stone age).

Thorin
 


<< So if I wanted to sign up with an ISP that only supported X2 >>


You wouldn't want to. It would mean they are running modem code that wasn't all that good and is 3 years old. All ISP's support V90. This is the protocol you want to run.
 
Actually my ISP has numerous dialup numbers locally. Some are v90 only.
Some are v90, X2. Some are v90, flex.
Thru trial and error I've disabled my v90 and am running X2 exclusively.
I'm getting consistent 51k connections..............
Greg
 
X2 lies about connect speed. It will report the highest speed tried during negotiation, not the speed it actually connects at. X2 typically reports 4-6K higher than reality. X2 also has a poor xmit speed. As an example, a V90 connect may look like 49333/28800 receive/xmit. An X2 might be 49333/21600 or worse.
 
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