56k USR modem and init string.

[A31Chris]

I found a website that had the init string for my USR modem. I put it in the appropriate place, the Advanced area of the connection tab on modem properties. However, when I downloaded TweakDUN at 1.55 mb near the end of the download it had dropped down to only 4.55kb per sec. Its lightning fast for the first few seconds, but then it just drops down to almost the same speed as a 14.4. If this is 56k, 28.8 must of been only a couple tenths of a kb faster than 14.4.

Another thing is when I go look at the advanced tab later the modem init string is no longer there. Is it suppose to remain visible forever? Or does it get tucked away by the modem somewhere?

[Murf]

What download speed are you expecting with th modem? 4-7 is about all you will get.

Go Here

Lots of good info.

[A31Chris]

Well, thats a ragin bunch of c**p. I was expecting at LEAST 10kb a second once it calmed down. TweakDUN has increased it to 5.50kb or so. I'm kinda disappointed. Actually I'm WAY disappointed. Oh well.

[markp62]

Your speed is normal, but 10kb a second on a 56k? No, not going to happen.

[A31Chris]

Well, are there any advantages to 56k over my 14.4 other than 2kb/sec(big whoop) increase in download speed?

[TheGorx]

well it doesn't seem like much now but I remember when it was big news.

I remember my first 56k X2 modem
it was a newcom with a rebate

Boy, did I have some learning coming my way.
I never got the X2 higher than 3.0 with my ISP using a flex modem
then newcon finally got a v.90 flash update and then went out of biz

years later

Maybe the rebate will be here tomorrow


these days I never spend more than 5 bucks for lucent modem

[Murf]

AsTheGorx said 5 is about normal.

Here is a generic comparision:


Theoretical Max: bps
(bits per second) App time to download a 5 MB
(Megabyte) file which is also equal to:
41,943,040 bits

14.4K Modem V.32bis 14,400 48 min. 32 sec.
28.8K Modem V.34 28,800 24 min. 16 sec.
33.6K Modem V.34+ 33,600 20 min. 48 sec.
56.6K Modem V.90, USR x2 *53,000 13 min. 11 sec.
56.6K Modem K56Flex *53,000 13 min. 11 sec.
56.6K Modem V.92 *53,000 13 min, 11 sec

BRI 64K ISDN 65,535 10 min. 40 sec
Fast DSL 512,000 1 min. 22 sec
High Speed DSL 896,000 47 sec
Comcast Cable 1.5/256 1,544,000 27 sec

*FCC limited 56.6K modems to an actual 53K download maximum in 1996. The V.90 technology came out it 1998 and V.92 came along later in 2000.

And real-world access is generally in the 35-45K range for these modems. Despite these limitations, 56K modems still attain the fastest standard modem speeds currently available on the market. Except for DSL and Cable.


Average speeds will vary dependent upon: user hardware, data line condition,
ISP hardware, Internet traffic, interconnecting server loads, and target server load.
Average download times are usually longer due to general server loads and traffic.


So when you look at the difference between a 14.4 and a 56K, depending on connection speed you have knocked off about a 1/2 hour with this 5MB file.


Here is a Chart to determine length of average time by modem to download a file.

Now there are some programs out there that say they can speed up you speed, many of them modem boost programs. Do they work???I don't know, never triued one.

[J A L]

Hello,

If the connection speeds are the same in reguards to V.90 vs V.92 then the V.92 will download faster! V.92 uses V.44 compression and V.90 uses V.42bis compression. V.44 also increases the bandwidth on upload speed over V.42. V.90 Max Upload is 33,6 00 and V.92 is 48,000.

Higher compression ratios mean that more data can be downloaded in the same amount of time. The most significant improvement will be noticed when you are browsing and searching the web, since HTML text files are highly compressible. For most users, data throughput will be increased by 20 to 60%.

V.44 is a new data-compression protocol that delivers data rates 10 percent through 120 percent faster than those achieved by the existing V.42bis compression protocol.

The most popular activity on the Internet is browsing, and this is where V.44 delivers the greatest improvement over V.42bis, so users can enjoy speeds up to 120 percent faster than with the older protocol. Popular sites such as Amazon.com and eBay use highly compressible HTML files, so online shopping is faster than ever. V.44 also increases data throughput for email (by 27 percent), Word documents (by 21 percent), Power Point files (by 10 percent), and C source files (by 45 percent).

Link

[Leurgy]

I'm confused too.

Murf says:

What download speed are you expecting with th modem? 4-7 is about all you will get.

What does 4-7 refer to? When I used a modem I would see connection speeds like 46,600 and 48,000.

[Murf]

What does 4-7 refer to

When you download a file from the net the download speed is measured in bps Bits Per Second.

4-7 is refering to 4bps to 7bps

A31Chris

00568702
This modem is a jumperless modem the 00568703 has jumpers.

It is also called a 56K Sportster .Both are ISA.

(V90/X2) First of all, x2 is an asymmetric communications technology, meaning it sends and receives data at different speeds. It downloads (receives data) at up to 56 Kbps, and uploads (sends data) at up to 33.6 Kbps.

x2 takes advantage of the fact that telephone networks are now mostly digital. It eliminates the analog-to-digital conversion in the downstream direction and thus uses the maximum amount of the available 64 Kbps bandwidth. U.S. Robotics states that, "This technique makes modems with x2 fundamentally different from other high-speed modems. In fact downloads could more accurately be described as encoded, rather than modulated."

(V90/K56) A technology developed by Lucent Technologies and Rockwell International for delivering data rates up to 56 Kbps over plain old telephone service (POTS). It was long believed that the maximum data transmission rate over copper telephone wires was 33.6 Kbps, but K56flex achieves higher rates by taking advantage of the fact that most phone switching stations are connected by high-speed digital lines. K56flex bypasses the normal digital-to-analog conversion and sends the digital data over the telephone wires directly to your modem where it is decoded.

To connect to the Internet at K56flex speeds, your Internet Service Provider (ISP) must have a modem at the other end that supports V.90.

Use the X2 phone number for your modem.

[J A L]

Well,

In order to be called a V.92 Modem it has to have the V.44 Compression technology!! there really is no inbetween that I have ever heard of or seen. V.92 added several features over V.90. One is Pulse Code Modulation this technology was Pioneered by Lucent. It increases the Upload Bandwidth. The second most important Improvement was higher compression without using additional resouces whether it be CPU or Ram. Third most important was Quick connect. every time you connect to the internet you benefit from fast connects ( twice as fast). Fourth was modem on hold. This allowed you to answer a telephone while connected to the internet and not allow the internet to disconnect while talking on the phone. There are some other small benefits like the noise when handshaking and other trivial things.

I go through hundreds of modems a month testing and flashing! That doesn't mean I am the know all when it comes to modems...all it means is I have never heard or seen a V.92 without V.44 compression and I have a lot of background in modems!

Now in reference to the intel based chipset modems.... did you know some of the models don't even work in Dell Computers? Can you imagine making a chipset that doesn't work with the largest OEM manufaturer Dell?


I think the future of analog modems is going to be in compression technology and not bandwidth. Unless the skinny phone wires are upgraded, I think for some time to come 56k is going to be the limit. So in order to send more data down the phone wires your going to have to compress it more. So in the case of 4-7 being the max amount you will see going down the wires is a true statement but when you compress data into a smaller package and uncompress it at the modem you get more data than without any compression. So I would think it is more important to get compression than it is to get bandwidth.

Example: I have a 33.6K modem and it is connected at 33.6 my compression is two to one over 56k. Now 56k is using more bandwidth but is sending less data down the wire. My 33.6 is twice as compressed and therefore it is perfoming like a 67.2K Modem.

If your on dial up you gotta go with the higher compression rate otherwise you are just going slower than you could be. There is nothing wrong with using init strings to get more throughput. but why beat your head against a wall when you could get a minimum of 20% more throughput of data with a modem upgrade? If your going to buy a modem then at least buy a v.92 one. I sell brand new ones for less than $20.00! I sell used V.92 modems tested with drivers for under $10.00. Thats how cheap they are.

One last thing... Did you know Lucent proposed the PCM (Pulse Code Modulation? Did you know they are the editor for the new standard? Guess who makes some of the best V.92 modems out there? It seems to me Lucent has a upperhand in developing modem chipsets. They had there hand in the development of the new standard!!! More than 50% of all dial up ISPs support V.92 Now! Don't buy a V.90 as they are not cheaper and they are an older technology that is being replaced. If you have a V.90 modem now then there is nothing wrong with that. But if your buying a new modem....well you read my mind... Buy a V.92 modem.

[A31Chris]

Youch! Thats all a lot to digest. I'll look at those replies some more when I get a chance. As for the V.92 calling itself such when it does not have the V.44 compression this jives with what was said in the link I believe Murf supplies to me in his post on this thread. So I'm definatly not a modem expert I'm just going by what I read and what it says on my V.92 modem package that its an V.92 but doesn't have the V.44 compression. Only the V. 42. I dunno.

My download speed according to the little popup window when its done downloading says at 5.50 kbps.

Chris.

[A31Chris]

Sorry to bump this thread up again, but I am a little confused on which INIT string to use in my USR 56k V.90 Sportster. Here's the list of strings that are possibly for mine that I could find.

USR Sportster 56K AT&F1&B1&D2&H1&I0&K1&M4S7=60
USR Sportster 56K and 56K Voice AT&F1&B1&D2&H1&I0&K1&M4S7=60
USR Sportster 56k Fax (Internal) AT&FQ0V1X4&C1&D3&H1&M4&K2S7=60
USR Sportster 56K V.90 s32=2
USR Sportster 56K s32=66
USR Sportster 56K Voice/Fax (Internal) AT&F&D3S7=60
USR Sportster 56K X2 AT&FX4&B1&H1&R2&K0
USR Sportster 56K X2 AT&F1&B1&D2&H1&I0&K1&M4S7=60
USR Sportster 56K X2 AT&F1&K0&I0S33=32S15=128S27=64
USR Sportster 56K X2 AT&F1&C1&D2S10=20S15=128S27=64
USR Sportster 56K X2 AT&F1&K3
USR Sportster 56K X2 AT&F1&D0S15=128S32=34
USR Sportster 56K s32=32
USR Sportster 56K s32=34


I currently have the USR Sportster 56k V.90 s32=2 init string in the modem. But I'm not sure if thats the right one with all those choices. There are even more 56k Sportsters listed but they appear to be for a 9600. So I'm pretty sure that doesn't pertain to me.


Thanks for any help or suggestions anyone can give.

[A31Chris]

Someone else just told me the proper init string is already taken out of the driver by the modem and used. This makes sense. But then why is Juno telling me to find the INIt string for my modem????? AAAArrrgghgghghgghghghghg.