- Go to Start > Program > Accessories > Hyperterminal. (You can install Hyperterminal through Add/Remove Programs if you do not have it).
- Click on the Hyperterm program.
- Name the connection "Test" and click OK.
- Enter the phone number for your ISP connection.
- Ensure that it is set to be using your Lucent modem, and click OK.
- Click Dial.
- After the handshaking is done, you should see on the screen the word: "Login", though this does vary from ISP to ISP.
- Wait a little while, say 15-60 seconds so you are connected for a bit.
- Disconnect by using the pulldown menu under Call, then select Disconnect.
- After you are disconnected, type ati11, press ENTER, and the following should appear with the 0's filled in(note:
press ENTER again to view the second line of information):
1 Last Connection 0
2 Initial Transmit Carrier Rate 0
3 Initial Receive Carrier Rate 0
4 Final Transmit Carrier Rate 0
5 Final Receive Carrier Rate 0
6 Protocol Negotiation Result 0
7 Data Compression Result 0
8 Estimated Noise Level 0
9 Receive Signal Power Level (-dBm) 0
10 Transmit Signal Power Level (-dBm) 0
11 Round Trip Delay (msec) 0
Press any key to continue; ESC to quit.
12 Near Echo Level (-dBm) 0
13 Far Echo Level (-dBm) 0
14 Transmit Frame Count 0
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 0
22 Digital Loss (dB) 0
23 Remote Server ID 0
Basic Analysis of Ati11:
Here you want to concentrate on the Estimated Noise Level. Unfortunately LT's do not show SNR, but the Estimated Noise
Level (though varying on certain factors) can be a decent indication of noise. The value should be between 100 and 140 in most
circumstances. If it is not you may have a serious noise issue. UPDATE: I am still researching the Estimated Noise Level. It
can vary a great deal and may not be a good indication until I find the proper equation to use with it to create a true range that
it should be in. The Receive Signal Power Level is also an important value. If this value is less than 9 or higher than 25 you
may have poor line signal strength.
This page was last modified on Saturday, 05-Feb-2011 15:13:38 EST.