AltiGen MAXCS 7.0 Update 1 ACM Administration - Manual (Page 169)

Triton Analog Trunk GS/LS Properties
MaxCS 7.5 Administration Manual 153
If the Hybrid Echo Return Loss and Noise Level are not within the acceptable range, take the following steps
to troubleshoot:
1.
Change the trunk to a different port on the Triton board, then diagnose again (this is to rule out a hardware
problem).
2. Check to see if any wire taps to the trunk wire (bridge tap). If so, remove them, then test again.
3. Request the CO to check the trunk conditions, including Line Loss, and longitudinal balance.
The Match Result Button
Clicking the Match Result button shows you the result you got the last time you clicked the Match Impedance
button for that trunk.
Figure 96. Impedance Match Result dialog box
Measuring the Rx Level of a Trunk Channel
In order to perform this test, you need to obtain the local CO’s Milli-Watt Test Number from your CO. When
dialing this number, a 0dB tone is sent. For example, if your number is 510-252-9712, the Milli-Watt Test
Number from the local CO is 510-252-0020 (the prefix 510-252 is the same).
1.
Write down the Rx Gain, then set it to 0dB and click OK.
2. Write down the Impedance setting, then change it to 600ohm, and click OK.
3. Call the number you got from your CO, as noted above.
4. Click the Test Rx Level button. When the test is complete, the Test Rx Level dialog box opens.
5. Click OK. The Rx Level measurement is displayed in the Diagnosis section of the main dialog box.
If you call your local CO’s Milli-Watt Test Number, the acceptable range for Rx Level should be between
-6dB and -3 dB, with -5dB being ideal.
6. Restore the Impedance and Rx Gain settings, and click OK.