This worked great with Hayes Compatible.
With--RPI modems-- try this......AT&F&C1&D2&Q6&K3
With--AT&T modems--this..........AT&F/Q3/N3
With--Hayes Compat--this.........AT&F&C1&D2&Q5&K3S46=136
AT&D or ATH1 = Dial Tone
ATH = Hangs Up
ATDT 1234 = Dials 1,2,3,4
AT&F&C1&D2&K3+H3S95=1^M -- if the response from ATI3 command in terminal was ROCKWELL RPI (TM) MODEM.
AT&F&C1&D2&K3+H11^M -- if the response from ATI3 command in Terminal was ROCKWELL RPI (TM) MODEM+
AT&F&C1&D2W2S0=0S7=90+H11^M -- if you have a USRobotics Sportster 14.4 SI modem.
Below are more things to try for RPI
RPI modem--Windows 3.1 and Internet Explorer: Open "Terminal Window after dialing" (From the properties
button in the connect screen), then sign on manually.
With RPI modem: Problem: Unable to establish Dial In Connection.
Enable "Open Terminal Window after dialing (see above) then have them
log
on manually.
If it is a Winmodem, check the Rockwell page
http://www.nb.rockwell.com
for the latest WinRPI drivers.
Change the windows / system.ini to include this:
[386Enh]
device=c:/iexplore/iewcomm.386 (assuming IE was installed to
c:/iexplore)
If the modem is a RPI modem (send ATI3 to the modem and see if it is RPI
or RPI+) place these settings in MODEMS@.INI for the modem:
InitString=AT&F&C1&D2&K3+H3
AnswerInit=AT&F&C1&D2&K3+H3SO=1
BPSRate=57600
DTRHangup=Yes
PortDriver=2
PortDriverName=iewcomm.386
HelperName=iecomhlp.exe
If the modem is a RPI+ modem use these strings:
InitString=AF&F&C1&D3&K3+H11W2
AnswerInit=AT&F&C1&D3&K3+H11WSO=1
BPSRate=57600
FlowControl=None
DTRHangup=Yes
PortDriver=2
PoerDriverName=iewcomm.386
HelperName=iecomhlp.exe
RPI Modem: Open "Terminal Window after dialing (in Connect screen
properties). Then have them sign on manually.
Rockwell Chipset modems: To find out if a modem has the Rockwell
chipset,
A) Type in ATi3 (in diagnostics pane in WIN95 modem properties
or
in a term program). See if modem respnds: RPI
B) TPE IN AT+H If you get "ERROR" it is not RPI
c) Examine the modem responses from: ATi3 and ATi6
If modem has RPI chipset, try adding +H0 to init string which switches
off
RPI error correction and reduce baud rate to 9600.
Rockwell: 1-800-854-8099
http://www.in.net/cgi-bin/modemcgi?searchdata=at Tons and tons of init strings here.
http://www.teleport.com/~curt/modems.html#manufacturers
USR ModemsUSR Modems but possibly on other 33.6 modems
http://www.incognito.com/mob100/mob00056.htm
Check out these modem sights.
http://www.dsp.com/modem.htm
http://www.teleport.com/~curt/modems.html
http://www.hughes.net/modems.html
http://www.accesscom.com/~nchinn/Modem_Init_Strings.html
From Customer:
Lance,
Don't know if you remember my call. We discussed a problem I was having a new laptop, Windows NT 3.51, and a Xircom CEM33 33.6 Kb modem that would connect but drop the call after about 30 seconds. A "conditioned" data line did not solve the problem.
After further research, my tech support people determined through the manufacturer that a production run of these modems had a problem with the voltage on the phone line. (These are line powered modems. Our company has 126 of these that need to be replaced!) The serial number on mine is C459206. I imagine others with serial numbers on either side of this have the same problem.....
Symptom:
The external 288 modems loses it's online connection at random intervals. After being online anywhere from 30 seconds to over one hour, the modem hangs up the phone line with no warning.
Resolution:
There are several explanations for this particular symptom. The possible causes include:
The steps for troubleshooting this problem follow:1.Incorrect init string 2.Wrong modem cable 3.Noisy phone lines 4.ISP hanging up due to inactivity timeout 5.Modem failure. Needs to be sent in for repair
1.Verify init string and configuration.AT&F&C1&D0 \Q3 INIT STRING TO USE CTS & RTS (DTR) FLOW CONTROL SETTING 57600 BPS PORT SPEED SETTING
2.Use the cable that came with the modem
3.Lower port speed setting to 19200 or 9600 to test. If the symptom goes away, problem may be due to noisy phone lines. Contact your local exchange to have lines checked.
If symptom continues at the end of these steps, then the likely cause of the symptom is the modem. Contact Prometheus for a repair authorization number.
Try this link for more info on Proetheus http://www.prometheusproducts.com/FAQ.HTM
Supra info from Supra tech support:S202=32 This will help the "too many digital to analog" hops problem.
W2 this makes the modem return connect speed not port speed.
The recommended string from Supra is
&F2W2S202=32
ModemMaster 6000 disconnectsThis person could not stay connected over 2 min. The fix was found at Silicom's website. Silicom makes the Modem Master 6000. The fix is as follows:
Question: Modem drops the line in the middle of my communications and I have a S3 Virge chip on my video card. What's wrong?
Answer: If you're using more than 256 colors on your video card, you may experience line drops. To fix the problem, try modifying a line in your SYSTEM.INI file.
Find the [display] section. Change the BusThrottle setting to 1. If there is no BusThrottle line, add it immediately under the [display] heading. It should be as follows:[display]
BusThrottle=1
If that doesn't fix the problem, try setting your monitor to 256 colors to see if this is really the symptom. If you still have problems with 256 colors. Make sure that you are using version 2.16 of the drivers.
Also try the following. Go to CONTROL PANEL, DISPLAY, SETTINGS, ADVANCED, PERFORMANCE and turn the HARDWARE ACCLERATION OFF.
I invested in a super-fast 56K modem to speed up downloading from the Internet, but I'm still receiving data at slower speeds. How do I get the 56K speed that I want?
The problem is, you have the latest in modem technology, but the computers that you're connecting do not. Furthermore, the process is complicated because of competing technologies. Rockwell and US Robotics are using incompatible protocols, because they support different standards for the 56K modem. Until a single standard emerges, you may find that your new 56K modem is ineffective, because your Internet Service Provider (ISP) offers service only for the protocol that works with the other brand. Or, your ISP may not currently support either standard, because your ISP is waiting for one standard to emerge as the "winner." So check with your ISP first. (As a test for the new 56K modem standards, MSN, The Microsoft Network is offering 56K data transfer support in these U.S. cities: Seattle, San Francisco, Los Angeles, Dallas, Chicago, Washington DC, New York City, and Boston.)Also, the bandwidth capability of your phone line has a significant effect on the data transfer speed. If the phone line can't handle the high-speed volume of data traffic, your 56K modem will not operate at full capacity, which will probably frustrate your expectations of speedy downloads. A comparable situation exists if you are communicating with a slower modem on the other end of your connection: downloads through your modem will be faster, but data transfer in the other direction may not move significantly faster.
You can still benefit from using a 56K modem if you frequently download files and your ISP uses a compatible protocol for your modem. But until all the problem areas in this situation are resolved, the benefits of 56K modems are limited.
Error 731-Protocol Not Configured
Do this check list first.
Server Type, Advanced Options. Log on to Network is off. Server Type, Allowed Network Protocols. Only TCP/IP is checked. Server assigned name server addresses is on. Server assigned IP address is on. Use IP header compression is checked. Use default gateway is checked. TCP/IP Properties:
Obtain IP automatically, checked Disable WINS resolution, checked. It doesn't make a difference if I enter a Gateway address or not, It doesn't make a difference if DNS is enabled or disabled, No bindings are checked. Modem Configure, Connection, Advanced. Hardware Flow Control is on. I tried different modem speeds, which didn't make any difference. Make sure you have Dial Up Adapter installed in Network.
Check: My Computer, Dial-up Networking, right-click on the connectoid, Properties, Modem Configure, Connection, Port Settings.If you have selected FIFO, but don't really have a 16550 UART in the COM port that the External modem connects to, then disable this. This problem would only apply to an External modem, since any Internal modem would have the 16550 built-in. Also, if you do have a 16550 UART, adjusting the buffer sizes may help. The largest value is not necessarily the best.
If you sometimes connect but sometimes fail, the variety of error messages generally mean just one thing: the logon failed. The exact error message is usually meaningless. Other causes include noise on the phone line and a variety of problems at the ISP end.
Rebooting your PC or making meaningless TCP/IP changes usually just buys time. Each time you dial you could get a different routing to the ISP. And if the problem is a flaky modem or port on the ISP, some other poor sap may have it tied up next time you dial and you get bounced to a working one.
Thanks to Michael Santovec.
If you are seeing the port speed and not the modem connect speed, here are the causes of the problem. They are listed below from most likely to least likely:
Win95 doesn't know your correct modem type (Control Panel, Modems).
For example, if Win95 thinks you have a 28.8 modem, but you have a 33.6 or 56k modem, whenever you connect faster than 28.8, Win95 will report the port speed because it won't recognize the higher connect speeds.
The Modem INF file you have is out-of-date. (Check with the modem manufacture. To install that, you go to Control Panel, Modems, remove the current modem, then Add it. When prompted, select the Have a Disk option and browse to the new INF file. Be sure to select the correct modem type.)
You need to provide some Extra Settings (Control Panel, Modems, Properties, Connection, Advanced) to get the modem to report the connection speed. Check your modem manual.
Your modem is not capable of reporting the connection speed Thanks to Michael Santovec.
I can't shut off Auto disconnect time out. I right click Internet Icon and it's checked for 5 Minutes; I uncheck it and the next time I boot up it it's checked again.There are several Idle Disconnect options.
The Idle Disconnect in DUN (My Computer, Dial-up Networking, right-click on the connectoid, Properties, Modem Configure, Connection) sends a command to the modem. The modem determines the idle time based on its activity. This one disconnects without warning. You have to access this setting via that path. If you go into Control Panel, Modems, that idle disconnect sets the default for new DUN connectoids. It won't affect existing ones.
The Idle Disconnect in Control Panel, Internet, Connection, (Modem, Settings - IE4) is for the MSIE browser. This one gives a warning if the browser is idle. This also must be selected if you want the prompt to disconnect when you close MSIE. If you remove this setting, but it won't stick, you can update the registry manually. See below: [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"EnableAutodisconnect"=hex:00,00,00,00
Thanks to Michael Santovec