Popular modem strings that we know work. You go to control panel then to the modem icon then to modem properties and look around for the "advanced" button which takes you to a window that has a box called "extra settings". This is where you enter the modem string. Usually it's a good idea to reboot after entering a string, just to be sure everything is starting from a known state.
here are the strings:
Rockwell HCF V.90 code is broken. Won't handshake until you set the client side to use kFlex only. This is only a workaround.Needs latest Firmware to connect reliably. Get it at:
http://www.zoltrix.com/index4.htm
WinModems
Try AT+MS=3DK56
Any kind of line noise and it handshakes forever with no connection established. Client side says computer not answering and client modem hangs up during handshake.
USR 56k Will not handshake properly, slow data xfer when it does connect. Use S32=34 to disable X2 S13=64 to disable fast retrains and download latest Firmware from:
www.usrobotics.com
AOpen 56k's (FM56-P) Only one version of firmware, doesn't appear to
help at all. Modem doesn't connect, same phasing problem. Will not handshake, rapid disconnection's (within secs
of establishing a connection) a lot of the time, the modem will just stop responding.
Cirrus Logic Handshake/phasing problem. Similar to the
AOpens. Will not connect. (chipset CL-MD56xx typically) Needs latest firmware 6.04 or later. If worse comes to worse, I've been able to get the Cirrus Logics to connect with this init string:
AT+MS=V34B,1,0,33600
http://www.gvc.ca/software/modems/ or
http://developer.intel.com/design/modems/support/drivers.htm
CD04.08 - 604 PARALLEL (V.90-ONLY) SPEAKERPHONE
04 - DSP PATCH: 103.00
*NOTE* that the 4.08 is not the firmware number, although it looks like it. The 604 is actually the number you should look at--that's 6.04.
Compaq 56-df LT WinModem in disguise. Go to:
ftp://ftp.compaq.com/pub/softpaq/sp9001-9500/sp9017.exe
To get the latest SoftPaq from Compaq or update it to the latest LT WinModem drivers here
http://www.808hi.com/56k/x2-lucent.htm
*NOTE* Installing the LT WinModem drivers will make the Voice functionality of the modem not work with the Compaq software on their computer.
Compaq/Rockwell Livingston's web site says something about put commas in and HCF modems force the modem to connect no faster than 41.333.
Acer Aspire I was able to get one to connect by adding 3 commas after the Rockwell HCF phone number,
putting a 4th comma caused it to not connect at all. Update available from Acer ftp site:
ftp://ftp.acer.com/aac_support/desktop/drivers/modem/56KV90.exe
The 00-INDEX.TXT file says it is 2.1.1.110, but the version information in the files is 2.1.2.110.
LT WinModems (use +MS=V32 for 14400 connections which seems to work
every time so far.) just long enough to download the new drivers from
http://www.808hi.com/56k/x2-lucent.htm
They need 5.49 or later. Kflex has been disabled in drivers v5.39+. to enable
K56flex instead of V.90, then you must use s38=1-v90=0
USR Sportster V.90 Speaking from past experience, I too was using a Sportster V.90
on a line incapable of supporting high V.90 connections. I would connect around 48K but would soon drop off after a minute or so. By experimenting, I found that I could keep the connection up
by setting a ceiling on the connect speed.
AT&F1&M5&N29&U28
Which sets:
&M5 (Error Control only)
&N29 44,000 Ceiling
&U28 42666 Floor
Diamond Supra AT&F1E0W2+MS=56 Forces it to KFlex which, for some reason has a more reliable connection. Or is this doesn't work try AT&F1E0W2+ms=V34 for 33.6 speeds. Latest firmware is important.
SupraMax modems Disable V.90, or update drivers at:
www.diamondmm.com/products/firmware/firmware-index.html
Motorola SM56 Firmware website:
http://www.motorola.com/networking/products/softmodem.html
%B18 should limit the modem to 33.6 and allow it to connect
SoftK56 modem Firmware website:
http://www.zoltrix.com/MODEM.HTM#56,000 WinModems
Look at the ATI responses for the individual modems and match it with modem in question.
PCtel modem Firmware website:
http://www.zoltrix.com/MODEM.HTM#56,000 WinModems
Look at the ATI responses for the individual modems and match it with modem in question.
Telepath Modems Telepath Modems in Gateways are usually USR
sometimes Winmodems.
http://www.gw2k.com/support/product/components/modem/index.html
ESS Modem Well, I got so frustrated with this fine fine POS, I called the ESS Tech for some info on their chip set. There ONLY technician just told me to use the 56KES-X2 drivers off of
www.multiwave.com and that the only manual reference I need for their chipset is the one
for USR. Meaning it is a bastardized USR chipset.
Shark V.80 56k Most of them use Motorola chipset. Since most manufacturer uses the drivers straight from Motorola, here the Motorola URL for the modems and the drivers. Pay attention to the different kind of drivers with the identifier code.
http://www.mot.com/networking/products/softmodem.html
Better Driver at www.sharkmm.com v90mot67-2.exe
Acer modems We've found that some internal Acer modems of this vintage
(basically before Win95 shipped...) won't work reliably with a port speed of 115,200 - and the symptoms would often be strange (connect, drop, report no dialtone until a power cycle). When they didn't weird out they'd still disconnect frequently.
If the other end was an analog modem on a 57,600 serial port they'd work just fine, but calling anything capable of delivering traffic above that speed
Try setting the user's port speed to 57,600. It works for us
Xircom CreditCard Have him set S109=1, this will force K56Flex.
Modem 56T If still no luck, set S38=0, this will force V.34
Emachines/Etowers Interestingly enough, in this Tech Support FAQ on their web site
http://www.e4me.com/techsupport/faq.html#modem
they claim that "When the UART speed of 8250 is reported, this is erroneous." Aparently they use a virtual UART, so we now have a modem that not only farms off the processing of signals, it also doesn't even have a real 16550 UART.
AT&F&C1&D2&K3W1 or ATN0S37=14 for V.90
N0S37=13 for K56Flex or N0S37=12 for V.34
Global Village dropped the customer to 38400 port speed and set them to CTS-only for the flow control (recommended to me by Global Village)
Megahertz Cruise I have talked with Mac customers with Card (33.6) Powerbook 1400s. In one case, they had a Megahertz Cruise Card (33.6), but were unable to connect to the digital pool. Putting commas after the access number in the settings seems to work fine.
ATI0 = modem product code
"3 = modem firmware version
"6 = hardware info or link diagnostics
"7 = configuration screen (3Com/USR only)
"11 = specific information about modem operation
ATY11 = gives diagnostics for 3Com/USR modems.