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Dell Opttiplex No Port for Modem

By frank.duffey ·
We have a small computer shop and buy used off lease equipment...
Dell Optiplex system does see a PCI or ISA modem with Comm ports set to COMM 1, COMM2 in bios or AUTO in bios settings.
Installed both PCI WIn Modems and ISA USR
Any Ideas
Aready tried Dell Web Site

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Dell Opttiplex No Port for Modem

by Paulote In reply to Dell Opttiplex No Port fo ...

it looks like you have to disable the com2 in the bios to make the modem operative because if the modem use the irq4, the com2 uses the same resource...

Paulo

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Dell Opttiplex No Port for Modem

by frank.duffey In reply to Dell Opttiplex No Port fo ...

Aready tried disable on Comm 2 in bios setup seems to not read the daughter board at all in the system it is a P-166.

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Dell Opttiplex No Port for Modem

by mpdcsup In reply to Dell Opttiplex No Port fo ...

Completely disable the serial ports on the system (via BIOS Setup). If you're using a PCI adapter, make sure IRQ 3 and IRQ 4 and I/O addresses 3F8-3FF and 2F8-2FF are *not* restricted from use by the PCI bus (also via BIOS Setup). If you're using an ISA adapter make sure that IRQ 3 and IRQ 4 and I/O addresses 3F8-3FF and 2F8-2FF *are* available for use by the ISA bus (restricted from use by PCI).

Remember, when you're adding adapter hardware (don't confuse issues -- this isn't a daughter board) to disable onboard resources that provide the same function.

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Dell Opttiplex No Port for Modem

by frank.duffey In reply to Dell Opttiplex No Port fo ...

disabled serial ports same response on dell optiplex 166

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Dell Opttiplex No Port for Modem

by csmith In reply to Dell Opttiplex No Port fo ...

The only way cheap way around this problem.
Use cheap internal PCI Wintel modems.
Leave COM1 and COM2 enabled.
Force MODEM to COM3.
(Using I/O 200h sometimes is necessary.)
Regards, Chris

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Dell Opttiplex No Port for Modem

by frank.duffey In reply to Dell Opttiplex No Port fo ...

The question was auto-closed by TechRepublic

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Dell Opttiplex No Port for Modem

by jereg In reply to Dell Opttiplex No Port fo ...
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Dell Opttiplex No Port for Modem

by frank.duffey In reply to Dell Opttiplex No Port fo ...

The question was auto-closed by TechRepublic

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Dell Opttiplex No Port for Modem

by frank.duffey In reply to Dell Opttiplex No Port fo ...

This question was auto closed due to inactivity

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