wsanchez
asked on
can't detect modem
A modem of someone I know cannot be detected by the computer but it can be turned on and the CD and TR would light up. However, whenever we try to connect to the ISP, there is no dial tone and the TR light would go out. What is the problem with the modem?
ASKER
It is an external modem. Microcom DeskPorte 28.8P. I am using COM2. I'm not that sure of the cable but the modem seems to 'react' to the PC when trying to detect it but the problem is, the PC cannot detect it. The TR light would go on (or off, I'm not sure) when the PC tries to detect it but before and after the detection process, the TR light is off (or on). I'm not using any gender adapter.
Check modem's software setting:
Go to HyperTerminal
Start Hypertrm.exe
Pick any name
In the list of modem choose Direct to Com2
Connect
Now type
at&v
press enter and copy the output to here so we can have a look.
Other helpful thing to do:
at&c1&w&y
which turns off the CD light.
at&f
fetch factory default for the S-Registers.
See if that helps.
Go to HyperTerminal
Start Hypertrm.exe
Pick any name
In the list of modem choose Direct to Com2
Connect
Now type
at&v
press enter and copy the output to here so we can have a look.
Other helpful thing to do:
at&c1&w&y
which turns off the CD light.
at&f
fetch factory default for the S-Registers.
See if that helps.
in win95, reinstall de modem and recreate the DUN
I had the same problem
I had the same problem
ASKER
I tried reinstalling but when Win95 tries to detect the modem, it can't. But the modem seems to react to it. Wierd.
Maybe you have a bad or incorrect modem cable.
What model is the modem?
Go find some new drivers from the manufacturer.
Try changing the serial cable.
Try to connect other device at the com port (such a mouse). Does it work? (may be a hardware problem, like bad cable inside your computer.
May be IRQ conflicts. Com1 uses IRQ 4 and com2 uses IRQ 3. Check it out.
good luck! let me know your progress
Go find some new drivers from the manufacturer.
Try changing the serial cable.
Try to connect other device at the com port (such a mouse). Does it work? (may be a hardware problem, like bad cable inside your computer.
May be IRQ conflicts. Com1 uses IRQ 4 and com2 uses IRQ 3. Check it out.
good luck! let me know your progress
ASKER
Ports are working well. I'll try to look for a cable. Thanks for your comments.
If it is the external modem, most likely is due to modem cable where lost signal which happen to my external modem, so try changing a modem cable.
Are you installing the modem through Plug and play when windows starts or are you manually adding the modem in the Control Panel 's Modem Icon?
If both way fails, then there is only two possiblity.
1. You are using or given a wrong set of setup files.
2. The EEPROM of the modem have corrupted and Windows is unable to recognise it as a modem device. Try going into Control Panel Modem icon and do a diagnostic to verify this. If you cannot do any diagnostic, then the EEPROM is corrupted.
3. Alternatively, check whether you have duplicated entries in the Modem icon under Control Panel. There could be some resource allocation problem if there is duplicated entries.
If both way fails, then there is only two possiblity.
1. You are using or given a wrong set of setup files.
2. The EEPROM of the modem have corrupted and Windows is unable to recognise it as a modem device. Try going into Control Panel Modem icon and do a diagnostic to verify this. If you cannot do any diagnostic, then the EEPROM is corrupted.
3. Alternatively, check whether you have duplicated entries in the Modem icon under Control Panel. There could be some resource allocation problem if there is duplicated entries.
ASKER
Yes, I am trying to install the modem through Plug and Play. A few months back Win95 can detect the modem but now when we try installing it through PnP, Windows can't detect it. I also tried adding it manually and it did not work. The modem still cannot be used. I still have to perform the diagnostics. There are no duplicated entries of the modem.
If u dare, try removing ALL from the "Device manager list" and reinstall back
ASKER
I don't think it's a problem with conflicting devices. The modem was tried on another computer and it still doesn't work.
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What brand?
Which serial port are you using?
Are you sure of the PC to modem cable? Are you using any gender adapters on it?