Configure the Input Level Gain

1. Access the Input Level Gain parameter of the voice profile associated with the B1. In this example it is assumed that the profile number for both B1 and B2 is 1. To do that, select Configure, Voice, and Channels from the navigation window.



You will see the Voice Channels window:



2. At Voice Profiles(Common Parameters), use the pull-down menu to select the desired profile to modify and click Modify. You will see the Voice Profile window:



3. Depending on the reading recorded in the "Display Input Level" procedures on pages 1953 (4430/50/55) and 1955 (4460), change the Input Level Gain setting as follows:

­ If the input level monitored in the "Display Input Level" procedures on pages 1953 (4430/50/55) and 1955 (4460) was more than -4 dB, add attenuation, as necessary. For example, if the monitored value was - 1 dB, add 3 dB attenuation by selecting integer of -3.

­ If the input level monitored in the "Display Input Level" procedures on pages 1953 (4430/50/55) and 1955 (4460) was less than -4 dB, add gain, as necessary. For example, if the monitored value was -8 dB, add 4 dB gain by selecting integer of 4.

4. Record the setting entered in Configure the Input Level Gain. You will need it to set the input level of all other digital voice channels in your installation.

Monitor the output level of the digital voice channel B2 displayed on the station 2 VNA display.

• If the value displayed on the station 2 VNA is more than -8 dB, add attenuation, as necessary until the displayed value is -8dBm and -16dBm. To do that, use the Configure the Output Level Attenuation procedure.
• If the value displayed on the station 2 VNA between -8 dBm and -16 dBm, no further adjustments are necessary.
• If the value displayed on the station 2 VNA is less than -16 dBm, it indicates that there is a problem in either the PBX, the test equipment, or either or both digital voice channels.