|Forums | USR | How can I force COM port for modem PnP install?||Watch|
|Posted - 1/8/2001 9:29:49 PM |
How can I force a US Robotics #5695 "56K Internet Call Modem" Internal PCI, to use COM5?
PlugnPlay puts it on COM3, but connection speed suffers (26400 MAX). I tried a borrowed MULTITECH PCI modem and it delivered top speed on COM5 (44000) as opposed to COM3 (26400), consistantly. The MULTITECH modem has alternative drivers to install on COM3 as opposed to the default COM5. There's a serial mouse on COM1 hence more fuel for my suspicions on COM3 being slower for the modem. The MULTITECH achieved consistant 44000 and 46000 conections in another WIN 98 machine on same phone line, on COM5.
I put the USR modem in the other machine (removed MULTITECH), PnP installed it on COM3 only and performed poorly (26400).
Other info: WIN 98 1st edition, PC100 M726 muthaboard, PENT II 350 w/64 MB RAM. AMIBIOS. Modem is on PCI slot 1 with BIOS setting to IRQ 11. Modem has it's own onboard controller. All other usual "tweaks" applied to settings (115,200, hardware control, UART buffers to MAX). Tried a diff PCI slot, diff IRQ.
|Posted - 1/18/2001 12:22:54 PM |
It has nothing to do with COM port; it's the difference in the modem firmware combined with the telco facilities and ISP equipment/firmware you are calling into.
Try the modem calling different ISPs.
|Posted - 1/18/2001 8:28:42 PM |
I beg to differ. Same modem, same machine, same phone line, same ISP # : COM3 = slow conection. COM5 = FAST connection. Tried over and over.
|Posted - 1/19/2001 8:36:50 AM |
Why don't you try forcing your USR 56K PCI Internal Modem to use the default Communications Port COM2 instead.
1. Goto Control Panel --> System --> Device Mnager and remove other COM ports except for COM1 (for the built in serial port).
2. Add a COM2 port (for use by your USR winmodem) at the regular settings (normaly at 02F8 hex, IRQ 03)
3. Install your modem (Control Panel --> Modem --> Press the Add button) using the "Have Disk" option. If asked what COM port associated with this modem, specify COM2 (the one you just created from above).
4. Verify an entry exist in Modem Control Panel that says "USR 56K Modem on COM2".
5. Verify by running HyperTerminal and select COM2 and type a modem command like "AT" to ensure that it responds with OK.
6. If you wish, add in modem's extra settings window a string to force V90 and disable kflex and/or X2 protocols.
|Posted - 1/19/2001 4:31:26 PM |
Oh, and one more thing before you start playing with com ports: back up your Windows registry!
|Posted - 1/19/2001 9:46:53 PM |
Thanks Dorian... I will try it soon.
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