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cholla
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« on: November 07, 2005, 03:54:05 PM »

Dial-up settings These are for ME but some will be simular in XP.I hope you find some of it useful.
Download & install Cablenut;use the ccs file for your OS & connection.
I make these adjustments to Cablenut for a custom dial-up file if it doesn't make yours work better you can use the ones that
it puts in automatically.On the RWIN use the one of the settings suggested by  TCP\IP analyzer for  RWIN based on MSS & enable
 windows scaling if you use a RWIN larger than 65535.On my Cablenut this is Tcp1323Opts set to 1to enable 0(zero) to disable.
Check your system at  http://www.[this.site.has.been.blocked.for.spamming]/  . Select the TCP\IP analyzer.
If it shows your MTU other than 1500 or your MSS other than 1460 you need to change it to these.
I will add this some dial-up's work better with MTU = 576  MSS = 536 so you can try these too if the larger settings slow
you down.
You can't make these with Cablenutin ME but you can set the MSS in XP cablenut .I do mine in the registry so I can't tell you how to do it in XP registry.If you have a
program that adjusts your MTU &MSS use it.
In My Computer go to dial-up networking.R.click on your connection select propertiesIn the networking tab make sure these are unchecked
NetBEUI & IPX/SPX Compatable Then in TCP/IP Settings Check Use IP Header compression.

In My Computer go to dial-up networking R.click on your connection select properties/Configurehis may be different in XP I will give you the way I do it in ME  probably has the same
settings they may be located a little differently. General\Configure on the dial-up modem you are using\maximum speed to
115200.\connection\port settings\set your FIFO Buffers to Receive buffer High Transmit Buffer  maximum.

advanced error control should be checked,compressed data should be checked

Use flow control should be checked,
Then it depends on the dial-up modem you have Check hardware for an external dial-up modem or an internal with on board
controller,Check software for an internal  modem that uses the CPU for its controller(this is the majority of internal modems
also called winmodems.)I have found that some internal modems work better set to hardware though.


These are for mt PCTel the may not work correctly in your extra settings I recomend trying them 1 at a time & rebooting
then connect.
For extra settings try W3;S10=100;S25=100 these depend on your specific modem but these work for several.
W3 or W2 in some modems makes the modem report DCE speed instead of DTE speed.S10=100 is a hangup delay that helps keep you connected.Try
these last sometimes the ISP won't connect with the extra settings & you have  to take them out.
Back to the General tab if the phone number you use for dial-up is in the same area code as you are
uncheck the use area code box.In the networking tab  under advanced options check enable software compression
& under allowed network protocols uncheck everything but TCP|IP unless your dial-up uses one of the others to connect.
. Open your registry (start - run - type regedit) and change the following registry entries:

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\Class\Net\000X (where X is a number between 1 and 9)there is a value
named SLOWNET, change it from 01 to 00.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\COMBUFF it has a value called Start, change its value from 00 to 01.

HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services\VxD\VCACHE, it has a value named Start, change it from 00 to 01.

The last 2 are controversial whether the help or not they usually don't hurt performance & sometimes help.
 

9. Open your sys.ini file (start - run -sysedit - ME type system.ini) close the boxes until you are at the one with the title
 C:\WINDOWS\SYSTEM.INI,
under [386enh] add the line ComXXIrqXXbuffer=4096, XX=Com port your modem is on and Irq assigned to your modem,
it should look like (Example) Com03Irq07buffer=4096. Then select file - save and reboot to take effect.


FOR FASTER WEB PAGE LOADING:
This tweak will help web pages load faster, it has no real effect on download speeds, just helps your pc look up websites faster thereby speeding up how fast the page loads and making websurfing more enjoyable.
Navigate to this registry entry and change the following settings:
For XP & 2K
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
\Tcpip\ServiceProvider
For 98, 98SE & ME
HKEY_LOCAL_MACHINE\System\CurrentControlSet\Services
\VxD\MSTCP\ServiceProvider
On the right for ALL OS's change these entries: (ALL values are HEXIDECIMAL)
I have seen these both ways so use what works best for your OS
Binary values
Class = 1
LocalPriority = 1                                           Class=8
 DnsPriority = 1                                     LocalPriority = 5
HostsPriority = 1                                    DnsPriority = 7
NetbtPriority = 1                                    HostsPriority = 6                                           
                                                    NetbtPriority = 8
http://www.[this.site.has.been.blocked.for.spamming]/read_articles.php?id=1130                 
To change the value right mouse click on the value and select modify and enter the values above once you have done all of them reboot to take effect and see how fast your pages load.
For 98 & ME they should all look like:
01 00 00 00
In a 9x OS there are 3 places for modem settings make sure they are the same for all 3
 for the dial-up modem.
1.Control Panel/Modem
2.Dial-up Networking/Properties/configure
3. System Properties/Device Manager/Modem/Properties
Start/Run/ Type win.ini go to [Ports] on the COM your modem uses mine is COM3 put either
115200 or 230400. Use p for a hardware modem or x for a software modem.(Unless you are
 using hardware for the flow control on a software modem).Below is what my  [Ports]
looks like.
[Ports]
LPT1:=
LPT2:=
LPT3:=
FILE:=
COM3:=230400,n,8,1,p
COM4:=9600,n,8,1,x
COM2:=9600,n,8,1,x
COM1:=9600,n,8,1,x
You can check these 2 links they are for 98   or ME you may need the patch in one of them to enable windows scaling.
http://testmy.net/forum/index.php?topic=1772.0
http://www.testmy.net/forum/index.php?topic=9647.msg94293#msg94293
« Last Edit: November 13, 2005, 03:14:21 PM by cholla » Logged
ROM-DOS
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« Reply #1 on: November 15, 2005, 03:54:03 PM »

56K Modem speed is not only dependant on bandwidth, but also on the noise parameters of telephone circuits.

56K Modems can exploit the makeup of the public switched telephone network (PSTN), because they  are significantly more demanding than voice service. Most modern telephone circuits exhibit much better electrical characteristics than the minimum the Telco is required to deliver, thus modems and a little tweaking can exploit this to deliver much higher data rates.

This magic requires a single digital-to-analog conversion to occur between the ISP and user. The conversion takes place at the local central office serving the subscriber. The ISP modem must be digitally terminated to the Telco digital trunk and no additional conversions are allowed between the subscriber and ISP.

The other requirement is a relatively short analog loop that has better bandwidth and noise characteristics than required for ordinary voice service. The copper phone line has a much greater bandwidth than required for voice service. This is what allows DSL to be delivered over the same line used for voice. In the US the FCC requires a minimum of 2700 Hz bandwidth from 300-3000 Hz for voice grade service. Since almost all subscriber circuits are digitized at the local central office the conversion process is the main determinant of bandwidth. Common practice is to sample voice lines 8,000 times per second quantized to 8-bits, as specified in ITU-T Rec. G.711. To prevent aliasing a bandpass filter limits maximum frequency to less than half the digital sample rate (4,000 Hz). Low frequencies are attenuated to minimize the effects of 50/60 Hz power noise. A typical subscriber line is able to deliver significantly greater bandwidth than the 2700 Hz minimum required by the FCC allowing 56K modems to deliver a faster throughput.

The PCM data rate is 64 Kbps (8,000 samples per second X 8 samples). Modem speed is limited by the number of discrete steps in amplitude that can be distinguished by the codec in the presence of noise.  Both A-law and u-law have a logarithmic response; there is very little difference between the smallest steps. This was done to optimize voice quality. Unfortunately it reduces theoretical data rate to 56 Kbps. Another constraint on speed is transmitting power. In the US the FCC limits transmit power to –12dBm, effectively limiting speed to about 53,333 bps.

V.90 and V.92 modems take advantage of these characteristics to deliver a much better data rate.  As an example, to deliver 56,000 bps requires a 3600 Hz bandwidth; in the range 150-3750Hz. See http://www.hal-pc.org/~wdg/56k.html for a detailed discussion of the frequency response issue. This is why Telco’s tends to be unhelpful dealing with modem complaints when phone service is operating normally. Optimum modem performance requires characteristics significantly beyond what they are required to deliver for voice service.

During connection setup V.90 and V.92 modems probe the phone line to determine optimum connect speeds. Download speed ranges from a high of 56,000 bps to a low of 28,000 bps in 1,333 bps steps. V.90 upload speed is the same as V.34, 2,400-33,600 bps. V.92 upload speed is from 24 Kbps to 48 Kbps in 1.333 Kbps steps. If the modem cannot connect in digital mode it automatically falls back to V.34. The modems are constantly evaluating line characteristics to compensate for changing line conditions.

 Idea The minimum requirements to get a V.90/92 connection are a virtually noise free local loop (modems which measure SNR for V.90 connections will show values from 45 dB for lower speeds all the way up to 55-60 dB with higher speed connections), plus a digital connection to the ISP which has exactly one Digital-to-Analog conversion (the codec in the line card for your line at the Telco switch) between the ISP and you.

V.90/92 modems preferentially connect in digital mode if they cannot they automatically fallback to V.34.

High-end connection speed of V.34 and low end of V.90/92 overlap. To determine if the modem is in V.90/92 mode external modems typically include a mode indicator. For modems without this feature connect speed can be used to determine mode. If the modem reports 28,000, 29,333, 30,667, 32,000, 33,333, 34,667, 36,000 or higher it is in V.90/92 mode. If the report is 33,600, 31,200, 28,800 or lower it is in V.34 mode.

Remember this; the FCC does not set nor care how fast data is sent over the PSTN network. From their perspective the faster the better.

What the FCC does care about is interference between telephone customers. Due to that concern, the FCC limits signalling power, in effect how loud each side can be. It is a side effect of this limitation, and typical noise and attenuation characteristics of the copper telephone loop that limits maximum V.90/92 speed to about 53.333kbs. The FCC would have no problem if some clever engineer (or tweaker, like myself) figured out how to recover the full PCM data rate of 64 Kbps.   cool

My ISP <=> NoCharge.com
{Free unlimited Internet access for Western Washington}  icon_thumleft

::::::::::.. Download Stats ..::::::::::
Connection is:: 65 Kbps about 0.1 Mbps (tested with 386 kB)
Download Speed is:: 8 kB/s
Tested From:: http://testmy.net/ (server2)
Test Time:: Sat Nov 12 18:13:38 PST 2005
Bottom Line:: 1X faster than 56K 1MB download in 128 sec
Diagnosis: May need help : running at only 84.42 % of your hosts average (nocharge.com)
Validation Link:: http://testmy.net/stats/id-KY9OWIBCS


::::::::::.. Download Stats ..::::::::::
Connection is:: 187 Kbps about 0.2 Mbps (tested with 97 kB)
Download Speed is:: 23 kB/s
Tested From:: http://testmy.net/ (server2)
Test Time:: Sat Nov 12 18:16:26 PST 2005
Bottom Line:: 3X faster than 56K 1MB download in 44.52 sec
Diagnosis: Awesome! 20% + : 142.86 % faster than the average for host (nocharge.com)
Validation Link:: http://testmy.net/stats/id-RJ98N0OSK

                   

« Last Edit: November 17, 2005, 06:37:17 PM by ROM-DOS » Logged

ROM-DOS
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« Reply #2 on: November 17, 2005, 11:20:04 PM »

To find the location of your telephone company switching office;
Click here <+> http://www.dslreports.com/coinfo
This link is for CO Distance(doesn't work for everyone)
http://www.dslreports.com/prequal/distance
USATELCO.png
      [ my 92,121 byte download test ~ lol]

Guess what! I live Two blocks away from mine.
That might explain the excellent speeds I get.

Forum LACYWA01: Post!
Telco: QWEST CORPORATION - WA
Address: 1311 COLLEGE SE

This CO feature set:
Note: If you are not a Telco guru or network admin,
these codes are of no interest, and do not relate to DSL service

WE DS1 Capable Wire Center
TH Frame Relay SAP-Frame Switch
TA Access concentrator
RM Program audio bridging
RH Telemetry and alarm bridging-passive
RG Telemetry and alarm bridging-summation
RF Telemetry and alarm bridging-split band
RE Telephoto bridging
RD Voice grade data bridging
RC Voice bridging
PL Swiched access-price zone 3
PC Special access-price zone 3
HD 800 query charge billing
GJ Public switch 64KBS clear channel (ISDN)
GD 800 or 800 type service
GC WATS or WATS type service
DA Feature group D with 10XXX dialing
BA Feature group B

Qwest Network Modification Statement [Word Document]
http://www.qwest.com/wholesale/downloads/2004/040706/NetworkModification_07-1-04.doc
« Last Edit: March 01, 2006, 03:20:25 PM by cholla » Logged

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