On Mon, 04 Feb 2002 15:15:03 +0200, Antti-Pekka Virjonen wrote: > My absolute max. has always been around 49-50K. (And I have used > dozens of modems on dozens of different phone-lines).
The actual, practical maximum for a 56K modem is 53K. I've never seen it actually happen, though. I live in an area with very good lines and a good CO and I occasionally get 52K, but usually 48K. Better modems will get faster speeds on the same line, but the line places an absolute upper limit on them. This is an area where a more expensive modem will often outperform a cheaper one, but probably not enough to justify the cost unless you're moving a _lot_ of data back and forth. If you're consistently getting 33.6 or less with your 56K modem, it's very likely that the equipment at the CO or the lines between your house and the CO aren't capable of providing 56K speeds. There can only be one analog-to-digital conversion between the modem and the CO switch for you to get more than 33.6 speeds. When I moved to my current house four and a half years ago, I'd only been able to get over 33.6 at my previous house for six months or a year, after they upgraded all of the switching fabric in my area. > The modem may also alter the connection speed while you are connected, > up or down... depending on the quality of the connection. It will not > let you know about the change. Yes, it will change speeds, and no, it won't tell you. But unless it down shifts pretty significantly, you probably won't notice it. And a lot of modems won't up shift again, either, until you hang up the line and start a new connection. This is another area where a more expensive modem will often outperform a cheaper one. TTYL, DougF KG4LMZ - This message is from the Pentax-Discuss Mail List. To unsubscribe, go to http://www.pdml.net and follow the directions. Don't forget to visit the Pentax Users' Gallery at http://pug.komkon.org .
