NEC UX5000 Guide

UX5000 Digital Terminal Mic Gain Adjustment Instructions
Before adjusting the gains on a digital terminal, adjustments must first be made to the analog trunks to be sure the levels are adequate.
Adjusting only the terminal’s gain may have no affect if the trunks aren’t normalized first.
1. Check the sidetone (volume) level on the analog trunks to be sure it’s at a good level.
2. As required, in Program 14-01-02 and 14-01-03, make sure the entry for each required trunk is set to default (32).
3. As required, use Program 81-07-01 to select the CODEC filter setting for each trunk. (Though Program 81-07-01 is trunk
based, if an entry of “4” is selected, the definition for the filter type defined in Program 81-17-01 is used for all trunks
defined as type 4. Adjusting this setting too high could cause feedback in the handset. This step is a trial-and-error process.
Start with the filter type closest to the trunk’s level, test and readjust if needed.
Program 81-07-01
Default: 1
Entries: 0 = Filter type 0 (no filter)
1 = Filter type 1 (600 Ω Line Loss 0dB (~500m from CO provider - high/loud from telco)
2 = Filter type 2 (600 Ω Line Loss 4dB (1-2km from CO provider - normal analog network)
3 = Filter type 3 (600 Ω Line Loss 8dB (3km from CO provider - low from telco)
4 = Filter type 4 (use Program 81-17 setting)
Program 81-17-01
Default: 0
Entries: 0 = None
1 = Type 5: 600 Ω Line Loss 2dB
2 = Type 6: 200 Ω + (100nF//680 Ω ) (not used in the U.S.)
3 = Type 7: 160 Ω + (150nF//1100 Ω ) (not used in the U.S.)
4 = Type 8: 900 Ω
4. After changing the entry in Program 81-07-01, place a test call to check the volume level on the trunk and as a handsfree call.
5. Program 14-01-02 can then be used to modify the dB level further, if needed.
Default: 32 (0dB)
Entries: 1~63 (-15.5 ~ +15.5dB in .5dB intervals)
The following procedures can be used, as needed to enhance the mic sensitivity transmit level of the UX5000 Enhanced digital terminals
once the analog trunk level has been set as directed above.
Section 1 - Check the Current Version of your Enhanced Digital Terminals
Section 2 - Adjusting the Mic Transmit Level
Section 3 - Adjusting the Full Duplex Parameter
Section 4 - Resetting Terminal Factory Default Values
Section 1 - Check the Current Version of Your Enhanced Digital Terminal
Use these steps to verify the current version of firmware running on your Enhanced Digital Terminal. The procedure in Section 2 -
Adjusting the Mic Transmit Level is intended to be used on terminal firmware versions V1.80 and lower. If your terminal has
V1.C0 or higher, the settings in Section 2 and Section 3 have already been applied.
1. Unplug the line cord from the back of the terminal.
2. Press and hold both numeric keys * and # .
3. While holding the keys * and # , plug the line cord back into the terminal.
4. The LCD screen will display Initialize .
5. After 2 to 3 seconds, release keys * and # at the same time and the Terminal
Information Menu will be displayed.
6. Verify the Enhanced Digital Terminal firmware version is V1.08 or lower
before you proceed to Section 2 - Adjusting the Mic Transmit Level (V1.C0 and above will have the below values set from
the factory).

Section 2 - Adjusting the Mic Transmit Level
These steps are used to enhance the handsfree transmit level of the Enhanced Digital Terminal Microphone. These setting
should be used with caution as they may adversely influence other audio properties of the Enhanced Digital Terminal. NEC rec-
ommends that step 11.b be use only after 11.a has been tried in your environment first.
1. Unplug the line cord from the back of the terminal.
2. Press and hold both numeric keys 4 and 6 .
3. While holding keys 4 and 6 , plug the line cord back into the terminal.
4. The LCD screen will display Initialize .
5. After 2 to 3 seconds release keys 4 and 6 at the same time and the Termi-
nal Configuration Menu Service Class R/W Mode will open.
6. Press key 9 for FDS Param Set .
7. To select Mic Sensitivity Address , press key 3 twice and you will see a “D” in the Addr field.
8. Press Line Key 2 to enter this setting.
9. To enter the Mic Sensitivity location, press key 3 four times and you will see a “0F” in the Data field.
10. Press the # key to cursor the value right.
11. Enter the Mic Transmit DB level: There are 2 possible settings that can be
entered. NEC recommends that the +3dB gain setting to be evaluated first
and the +6dB gain setting only be used after the +3dB setting does not
increase the transmit level to your environment's appropriate level.
a. +3dB (NEC Recommended Value) - Press key 5 and then Line
Key 2 to save the new value to +3dB.
**See NOTE 3
b. +6dB - Press key 6 and then Line Key 2 to save the new value
to +6dB.
** See NOTE 1
12. Verify your modified value has been saved.
a. From the Service Class R/W Mode Terminal Configuration Menu, press key 9 .
●
For +3dB value, verify that terminal settings “F5” are displayed in the LCD Screen.
08 00 08 25 1F 3F A1 80
3E 3D 04 06 08 F5 08 48
●
For +6dB value, verify the terminal settings “F6” are displayed in the LCD Screen. ** See Note 1
08 00 08 25 1F 3F A1 80
3E 3D 04 06 08 F6 08 48
NOTE 1: +6 dB setting should only be used after the +3db setting has been tried. Use of this setting can degrade other
audio parameters depending on the individual installation environment.
NOTE 2: Settings will be saved even after a terminal reboot and initialization.
NOTE 3: Before testing the +3dB gain is accurate for your environment, make sure that Section 3 - Adjusting the Full
Duplex Parameter has also been completed.
13. After verification of the new terminal value settings, press the CHECK Soft Key to return to the Service Class R/W
Mode Terminal Configuration Menu.
14. Continue to Step #6 of Section 3 to continue setup for the new Full Duplex value setting. If you have previously
adjusted the Full Duplex setting in Step #6 of Section 3, complete Step 15 below.
15. Use the handset to go off hook and then back on hook to reset the terminal with your new settings.

Section 3 - Adjusting the Full Duplex Parameter
It is necessary to adjust the Full Duplex levels to re-balance the new settings that were made in Section 2 - Adjusting the Mic
Transmit Level . Without these adjustment, full duplex characteristics of the Enhanced Digital Terminal will not be appropriately
tuned and will degrade the overall performance of the handsfree speakerphone communication (conditions such as squealing can
occur while on a call).
1. If still in the configuration programmming from Step 14 above, proceed to Step 6. Otherwise, unplug the line cord from
the back of the terminal.
2. Press and hold both numeric keys 4 and 6 .
3. While holding keys 4 and 6 , plug the line cord back into the terminal.
4. The LCD screen will display Initialize .
5. After 2 to 3 seconds, release keys 4 and 6 at the same time and the Terminal Configuration Menu Service Class R/W
Mode will open.
6. Press key 9 for FDS Param Set .
7. To select Full Duplex Threshold Address, press key 6 and you will see a “6” in the Addr field.
8. Press Line Key 2 to enter this setting.
9. Enter the Full Duplex location by pressing key 8 and you will see a “08” in the Data Field.
10. Press the # key to cursor the value right.
11. Press key 1 as your new Full Duplex value and press Line Key 2 save your settings.
12. Verify your modified value has been saved.
a. From the Service Class R/W Mode Terminal Configuration Menu, press key 9 .
i. For +3dB value verify that terminal settings “F5” are displayed in the Mic Gain field and “81” in the Full
Duplex field.
●
08 00 08 25 1F 3F 81 80
●
3E 3D 04 06 08 F5 08 48
ii. For +6dB value verify the terminal settings “F6” are displayed in the Mic Gain field and “81” in the Full
Duplex field. ** See Note 1 on the following page.
●
08 00 08 25 1F 3F 81 80
●
3E 3D 04 06 08 F6 08 48
13. Use the handset to go off hook and then back on hook to reset the terminal with your new settings.
14. The Enhanced Digital Terminal must perform Acoustic Training after any parameter change. This Acoustic Training
will automatically start during the first call after these settings have been changed. NEC recommends that a test call with
conversation be placed for one minute to allow for the terminal to adjust for the new settings.
Section 4 - Resetting Terminal Factory Default Values
After setting values or improper values have been set that have degraded the audio quality of the terminal, it is possible to reset
all the configuration values to Factory Default setting.
1. Unplug the line cord from the back of the terminal.
2. Press and hold both numeric keys 4 and 6 .
3. While holding keys 4 and 6 , plug the line cord back into the terminal.

(0913104)
February 6, 2009 Printed in U.S.A.
NEC Unified Solutions, Inc.
4 Forest Parkway, Shelton, CT 06484
TEL: [phone] FAX: [phone]
www.necux5000.com
4. The LCD screen will display Initialize .
5. After 2 to 3 seconds release keys 4 and 6 at the same time and the Terminal Configuration Menu Service Class R/W Mode
will open.
6. Press key 0 to select Data Initialize.
7. The terminal will show “Saving…” and return to the home menu.
8. Press key 1“Line Key Type” to reset the terminal line key configuration.
9. Press the key #(3, 4, or 5) that corresponds to the number of available line keys on the terminal that you are configuring.
(Example: 24 Line Key terminal press key 5).
8-button Key 3
12-button Key 4
24-button Key 5
10. Press Line Key 2 to save this value and you will be returned to the home menu Service Class R/W Mode.
11. At Service Class R/W Mode home menu, press key 2to set the Key Kit type that is installed on your terminal.
12. Press key 0and key 3.
13. Press Line Key 2 to save this value and you will be returned to the home menu Service Class R/W Mode.
14. Press key 8“FDS Mode Set” to verify terminal setting.
15. Press key 2for FDS = ON.
16. Press Line Key 2 to save this value and you will be returned to the home menu Service Class R/W Mode.
17. At Service Class R/W Mode home menu, press key 3to set the USA 508 Settings.
18. Press key 2to turn “ON” USA 508.
19. Press Line Key 2 to save this value and you will be returned to the home menu Service Class R/W Mode.
20. Verify that all the proper settings have been saved. Press *and use the cursor to scroll up and down to make sure that the
proper values are set.
21. Press the CHECK Soft Key to return to the top of the menu and use the handset to go off hook and then back on hook to
reset the terminal with your new settings.
NOTE 1: DO NOT change any other values as this will affect the audio balance and performance of the terminal.
NOTE 2: Updated values will be saved even after terminal reboot.
NOTE 3: The Enhanced Digital Terminals must perform Acoustic Training after any parameter change. This
Acoustic Training will automatically start during the first call after these settings have been changed. NEC
recommends that a test call with conversation be placed for one minute to allow for the terminal to adjust for
the new settings.