Altigen AltiWare ACM 5.1, Administration Manual

Page: 179 / 454

Chapter 12: Trunk Configuration
AltiWare ACM 5.1 Administration Manual 165
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.
If You Need to Improve the Rx Level
If the Rx Level measurement is between -6 to -9 dB, and IP phones are used, take the
following steps to increase the gain for the Triton analog trunk to IP phone connection:
1. Go to VoIP Board configuration and click the Advance button.
2. Increase the Transmitting gain to IP Extension to 9 for the Triton Analog Trunk. (Do
NOT change the gain in the trunk property of the Triton Analog Trunk Board, since
it may impact the echo canceller performance.)
If the Rx Level measurement is worse than -9dB (for example, -10 dB) you should
contact the CO to adjust the line loss to the acceptable range.
If You Don’t Have the Milli-Watt Test Number
If you don’t have the local CO’s Milli-Watt Test Number, you can follow the steps below
to measure the line loss when calling two local trunks:
1. Copy \C:\Post Office\Phrases\Lang1\phrase9900 to \C:\Post
Office\Phrases\LangCustom folder. Rename it an unused phrase name, for example,
phrase0990 (the number must be less than 1000).
This phrase is a 1 kHz test tone.
2. Select an unused AA and set the AA to play the prompt phrase you named in step 1
(0990 in this example).