56k Times Five: Myth Or Moneymaker? 529
maxentius writes "InternetNews.com has an article on not-broadband-but-still-faster telephone internet access premiering soon in more than one commercial ISP venue. Compression and other techniques will improve speed by up to five times, so they say. Hi-tech or hogwash?"
Read the Article (Score:4, Informative)
Email speed will stay the same.
Downloading compressed files will stay the same.
Browsing will be somewhat faster, but 7x is a stretch.
More than anything, I bet most of those $28.95/mo customers will be paying for the privilege of ~5min support response calls.
Definitely file this one into the "Hype" category of Hogwash.
Won't work... (Score:4, Informative)
This makes it impossible to cram more than 64Kbps into a phone call. Sure, you can compress the data, but once data is already compressed (as images, movies, and other things people usually want fat bandwidth for), it can't be compressed anymore.
Unless they dramatically change the analog phone network, which won't happen, this is a pipe dream. Sorry guys.
possibly... (Score:4, Informative)
Speed vs. Time (Score:4, Informative)
Your MP3s and bad porn will still come across just as slow on your gnutella client. Sorry.
-Chris
5:1 Compression...I Think Not (Score:2, Informative)
Re:Myth (Score:5, Informative)
What will be accelerated
All text - HTML, markup, and javascript
Most graphics & photos - including jpeg and gif images and most Flash images and animation
Most banner ads
All browser-based emails
All emails that contain images - even when read in a dedicated email program
What will *not* be accelerated
Streaming media, and audio and video files
Secure pages, such as those used for online banking and credit card forms
MP3 files and executable programs
Re:I figured it out - (Score:3, Informative)
It saves the costly 3-way TCP handshake on the slow modem connection by installing a local side proxy. The proxy makes a couple permanent TCP connections to a squid proxy on the other end. I know for a fact propel uses squid on the server side. If the content is cached you save 1.5 * ping time to server for every request to that server.
How does it work? (Score:4, Informative)
Nothing magic. It compresses a whole page, images and all, on the ISP side, and sends it down a persistant pipe to your client, along with some more intelligent caching information than is default (ie, the
It would probably 'look' faster since the whole page is delivered in one package, and renders all at once, rather than having text and waiting for images to show up.
It only accelerates HTTP AFAIK, so it's useless for anyone but the mom and pop web browser. It's certainly no substitute for bandwidth. The joe users buy broadband for P2P and streaming video and VPNs, none of which this 'technology' helps.
It also sounds like it would require client side software. Support? "Windows 98/NT 4.0/2000/ME/XP (sorry, no Macintosh support yet." which goes without saying.
Which brings me to a question. I regularly route my web browsing through my squid proxy at home (through ssh). Since my home uplink is 15k, it throttles my browsing. Is there an open source clone of this, or something similar?
Re:time to compress (Score:5, Informative)
Presumably, identity is standard uncompressed text. The others indicate its willingness to accept gzipped files from the webserver.
Since HTML is text, you have a GUARANTEE of 1/8th space savings. Since HTML tends to use a lot of similar codes, the space savings are, in all likelihood, far greater. Since on dialup, the latency of compression is trivial in comparison to the limitations of bandwidth, this may help substantially.
Web-server compression makes sense to me.
Then again, there are PPP extensions for compression now too. These would have a similar benefit.
Combined with both an off-site connection proxy and an on-site data proxy (this is what their webpage suggests they base their technology on), you get the enhancement they claim, more or less (not for compressed files or raw data transfer though).
Re:Myth (Score:5, Informative)
Re:It's available now. (Score:2, Informative)
Compression "enhancements" like this won't do you any good on your downloaded software or most images. Your downloaded programs are already compressed. Something like this can't crunch it much further, if at all. Pics like
Compression works by eliminating repetitive data in a way that can be reveresed. You can only do it once. That's why you don't get a smaller file if you try to zip a
JPEG2000 is done (Score:3, Informative)
http://www.jpeg.org/JPEG2000.html
I'm really looking forward to JPEG2000 for digital cameras, since instead of having to cache thumbnails, applications like iPhoto can just decode the wavelet subbands appropraite for the current resolution. Much faster than having to decode the whole JPEG and then cache a thumbnail. Browsing an iPhoto library with 2000+ files strikingly slow, and surprisingly fast considering the math that is going into it.
Still, PNG will probably be better for synthetic graphics like screen shots, where JPEG2000 will be better for natural images.
Re:Myth (Score:2, Informative)
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Internet Explorer\ActiveX Compatibility\
Now look for a subkey called:
{D27CDB6E-AE6D-11CF-96B8-444553540000}
If it doesn't exist, create it.
Now create/edit a value in that subkey called Compatibility Flags, type DWORD.
Set the data in the value to 400 (that's as hex; 1024 as decimal).
Bingo - no more Flash, ever, and no more prompting to install the plugin either.
Also works for any other ActiveX control - if you know the CLSIDs that various spyware uses then you can block those too.
Re:Myth (Score:2, Informative)
5x dialup speeds is based on 28.8kbps speeds (Score:3, Informative)
Re:Myth (Score:1, Informative)
127.0.0.2 www.macromedia.com
and save it. From then on, you will never be nagged, and www.macromedia.com will be completely inaccessible in IE. Goodbye, Flash.
Re:I don't see... (Score:2, Informative)
The modem is not the problem. It's the phone company and their standards.
Besides, modems already do this in analog mode (33.6k). The modem shifts the phase an frequency of the carrier signal to cram 30k of data into a 4kHz bandwidth. There's only so far that you can go.
ADSL modems are a different beast entirely and do not use the POTS (plain old telephone service) circuitry. They have a splitter that sends POTS traffic to the POTS circuit and the ADSL signals to an ADSL modem. They use the same wire, but they are separate signals to the phone company.
Re:Myth (Score:2, Informative)
it's actually pretty bad-ass.
Re:Hmmm (Score:2, Informative)
FTHoP won't be a reality in most neighborhoods for some time to come because of the exorberantly-high prices - unless the city has been forward-thinking enough to include fiber networks pre-built into the city's infrastructure. "Dark Fiber" is a misonmner and does not include FTHoP facilities.
Sorry to burst the bubble - but demz da facts.
ScottKin