Bits & Bytes.............

 

You can use a little-known utility called WinIPConfig to see information about your TCP/IP network settings. From the Start Menu, press Run, type WINIPCFG, and click OK.

Connection Speed...........

While connected to the internet via dialup or in a networked environment, open a DOS window, and at the DOS prompt type "ping" and the internet address you wish to check. ie. ping www.windows95.com. Windows95 will tell you how fast the connection is to the address given.

Do the LT Win Modems support caller ID?.................

Some do, some don�t, depending on how the distributor configured them. Lucent writes:

If your modem�s hardware supports Caller ID, use the V.253 standard command AT+VCID=n command, where

n=0 disables Caller ID

n=1 enables formatted display

n=2 enables unformatted display

 

How can I get information about the last call and interpret the results?...........

In a terminal program, type ATI11.

These are example results using recent firmware. If your results are formatted differently, try upgrading your firmware.

The line numbers have been added for clarity. Each line is explained below.

ATI11

Description Status

--------------- ------------

1 Last Connection 56K

2 Initial Transmit Carrier Rate 28800

3 Initial Receive Carrier Rate 50000

4 Final Transmit Carrier Rate 28800

5 Final Receive Carrier Rate 50000

6 Protocol Negotiation Result LAPM

7 Data Compression Result V42bis

8 Estimated Noise Level 152

9 Receive Signal Power Level (-dBm) 25

10 Transmit Signal Power Level (-dBm) 16

11 Round Trip Delay (msec) 4

12 Near Echo Level (-dBm) NA

13 Far Echo Level (-dBm) NA

14 Transmit Frame Count 3

15 Transmit Frame Error Count 0

16 Receive Frame Count 0

17 Receive Frame Error Count 0

18 Retrain by Local Modem 0

19 Retrain by Remote Modem 0

20 Call Termination Cause 0

21 Robbed-Bit Signaling 00

22 Digital Loss (dB) 6

23 Remote Server ID 4342C3

 

Each of the line items in the ATI11 result is explained next:

1. V90, 56K (K56flex), V.34, or V.32 depending on the type of connection negotiated.

2. Initial upstream rate

3. Initial downstream rate

4. Current or final upstream rate

5. Current or final downstream rate

6. LAPM or MNP or None, depending on V.42 negotiation

7. V42bis or MNP or None, depending on V.42 negotiation

8. Mean-square error of received downstream signal. Difference between received constellation point and reference decision point. This is a dimensionless decimal number, only valid during a call. Higher numbers are worse. There�s no absolute threshold of goodness; it depends on the downstream data rate. The number varies during a call, so it can be useful to sample it a few times.

9. The received signal power, although labeled -dBm, is only a relative measure for comparing calls to/from different locations. Only valid during a call.

10. Upstream transmit signal power.

11. Round-trip delay reads differently for different server types, so can be used as a relative measure to compare connections to the same type of server.

12. Echo levels are valid for V.34 only.

13. Echo levels are valid for V.34 only.

14. Number of LAPM frames sent upstream during this call.

15. Number of REJ frames received at the analog client modem.

16. Number of LAPM frames received by client during this call.

17. Number of frames received in error by the client.

18. Number of retrains or rate renegotiations requested by this modem.

19. Number of retrains or rate renegotiations requested by remote modem.

20. Reason for call ending, only valid after call ends:

0 = Local modem command: ATH, DTR drop

1 = Remote modem: cleardown, loss of signal

2 = No answer, busy, etc.

3 = Training failure, K56flex or V.34.

4 = Protocol failure if required by \N4, for example.

21. For PCM modes only, a hexadecimal 6-bit pattern of T1 frames with robbed-bit signaling.

22. For PCM modes only, the downstream digital loss.

  1. For K56flex only, the V.8bis info sent by the server. Meaning is defined at the server and by convention. Example above is from
  2. Ascend MAX inmuLaw.

Increase Registry Backups...........................

Win98 keeps the last five backups Registry Checker creates. To save more backups, open \WINDOWS\SCANREG.INI with Notepad and change the MaxBackupCopies= value from 5 to a higher number.

 

Retrieving Your Microsoft Products� Serial Number................

Usually, your Microsoft applications Product key come printed on the jewel box. In case you have accidentally threw it away, you won�t be able to install the application again for losing the CD key.

The registry and solve this problem. Open up the registry editor and scroll to :

Debug the Hard Drive...................

Even if you have repartitioned the hard drive, FDISK does not update the entire partition sector after the first time. The following DEBUG script will clear the partition sector (cyl 0, head 0, sector 1) of the first hard drive, which will force FDISK to completely start over. This is sometimes useful for removing Disk Manager or EZ Drive and should also remove any boot sector viruses, providing that the virus is not active in memory, which should be the case if you have booted clean from a non-infected diskette. Although this script clears only the first physical drive, we recommend unplugging other drives to prevent accidental data loss. Letters in script are not case-sensitive.

A:\>DEBUG

xxxx:0100 mov ax,301 (ignore segment:offset values at left)

xxxx:0103 mov bx,200

xxxx:0106 mov cx,1

xxxx:0109 mov dx,0080

xxxx:010C int 13

xxxx:010E int 3

xxxx:010F (Press ENTER an extra time here)

xxxx:0100 B8 01 03 BB 00 02 B9 01-00 BA 80 00 CD 13 CC (make sure that hex values match above line before proceeding)

(if values do not match, type Q and start over)

FDISK should now show "No partitions defined".

Some explanation of script: (all values in DEBUG script are in HEX)

mov ax,301 AH=03 INT13 function 03 - Write Disk Sectors

AL=01 specifies how many sectors to write (1)

mov bx,200 BH=02 BL=00 points to buffer area at offset 200

mov cx,1 CH=00 specifies cylinder 0 for INT13 function 03

CL=01 specifies sector 1 (first sector on drive) mov dx,0080 DH=00 specifies head 0 (first head on drive)

DL=80 specifies physical fixed disk drive 1

(81=2nd drive, 82=3rd drive, 83=4th drive)

int 13 call INT13 (BIOS Fixed Disk Device Service Routine)

int 3 return to DEBUG (after assembling program)

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