Q: What is Error 651: Your Modem (or other..) has reported an error
A: This is just Microsoft's little way of letting you know your cable is bad, or the baud rate is incorrect. Dial up networking users with a version greater than 1.0 should be warned that direct cable connect does not seem to be responding to the baud rate settings. An easy way to test for the winsock problem is to increase the dial up setting for baud rate on the NT machine to several higher values, as the 95 code seems to be setting the speed too fast, and be sure to hit 38400 and 11500. You also may need to verify the cables connection. You will have to learn how to use hyperterminal. It comes with NT and 95 both. Fire it up on 95 with the baud rate and handshaking settings for the 95 computer. You should see the word "CLIENT" on the screen". using NT hyperterminal, TYPE the word "CLIENT" in upper case and 95 will respond "CLIENTSERVER". If you fail to see this on either computer, you may be using a cable that does not support hardware handshaking. If garbage appears, you are not connected at the correct baud rate. Each of the tests of the link is performed with direct cable connect, or remote access dialing programs active.
A: A variety of problems can interfere with windows NT finding the Host 95 Computer. Unless your Windows NT computer has been previously configured, you will NOT be able to find it from the 95 Windows Explorer. The following are some general items that can cause problems. If these issues appear not to aply to you, there still may be some Windows 95 setup problems.
Note: This procedure will consume a NT serial port as it is not
easy to enable/disable the feature of receiving dial-up calls. The procedure
where windows 95 answers is far simpler to implement and is more likely
to work...
A: It is possible to connect if you configure in the
control panel /network/remote access service/properties the direct cable
link as answer. The baud rates apparent in the control panel / modem, and
control panel / ports / advanced must all be set to the same baud rate.
You may access files by using the find computer function in windows 95
explorer. Sharing must be enabled on the windows NT computer. Connection
attempts may be noted by launching dial-up networking and selecting the
direct cable "monitor status" check the baud rate here. You must have enabled
remote net login and must use a valid login/password on the windows 95
machine as the DCC client will ask you to log on.
Another approach to the windows 95 guest procedure is to load a null modem configuration file. The null modem allows dialing the NT server/workstation over the serial link:
Null
Modem Driver for Windows 95
Somewhat
Related Windows 95 Instructions
You may find the following information on NT 4.0 setup for serving dial-up direct connections:
Q: Can I change the Baud Rate?
A: Yes! Adjust the baud rate in windows 95 by selecting control panel / system. Select the device manager tab and the modem category. Adjust the baud rate for the port you are connecting. You will also have to adjust the setting in the RASphone entry for DCC 95 connections. Please get the connection going first before adding this variable to the equation. More information on the Windows 95 Baud Rate Adjustment can be found here.
Q: Is it possible to use the parallel cable scheme?
A: Windows NT 5.0 scheduled for release Mid 1998 promises a superset of windows 95 functionality. Yes, this means a port of the familiar windows 95 client direct cable connection. Parallel connections should be provided, Parallel Technologies has already reported the release of a NT driver for the DCC networking operations. For now, we are left with the serial connection and some assembly is required...
Q: What Transfer rate can I expect?
A: In 36.7 hours 361 MB were transferred. Allow about
10MB per hour for file transfers.
Q: What is the Schematic for a File Transfer Cable Appropriate for RAS/DCC?
A: Exercpt from KB Article #142324: (Remember, Only Serial Connections are Possible at this Time)
Pin Connections for a Serial Cable
This section describes the wiring
specifications for serial InterLink cables that can be used with Direct
Cable
Connection. To make a serial
InterLink cable, make a serial cable with either a 9-pin or 25-pin female
connector on
both ends, and wire the cable
as follows:
9-pin
25-pin
25-pin 9-pin
Description
----------------------------------------------------------------------
pin 5
pin 7 <------> pin 7
pin 5 Ground-Ground
pin 3
pin 2 <------> pin 3
pin 2 Xmit-Rcv
pin 7
pin 4 <------> pin 5
pin 8 RTS-CTS
pin 1 and
6 pin 6 <------> pin 20
pin 4 DSR-DTR
pin 2
pin 3 <------> pin 2
pin 3 Xmit-Rcv
pin 8
pin 5 <------> pin 4
pin 7 CTS-RTS
pin 4
pin 20 <------> pin 6 pin
1 and 6 DTR-DSR
The Ground (GRD) line is the reference signal ground for all other lines.
The Transmit Data (TD) line is used for sending data.
The Receive Data (RD) line is used for receiving data.
The RTS (Request To Send) line
is used by the data terminal equipment (DTE) to indicate that it is ready
to send
data.
The CTS (Clear To Send) line
is used by the data communications equipment (DCE) to indicate that it
is ready to
receive data.
The DSR (Data Set Ready) line is used by the DCE to indicate that it is ready to communicate.
The DTR (Data Terminal Ready)
line is used by the DTE to indicate that the DCE should initiate communication.
Q: Is it possible to use a serial port with a modem already installed?
A: I tried to map an additional com port to the same
hardware address with no avail. On this computer I had to get a special
communications expansion board that would allow for uncommon IRQs (9 &
15) beyond the typical IRQ 3 & 4. Perhaps adding an additional port
would save a great deal of trouble.