NEC Visualink 128/384 User Guide

							NDA-24230 Issue 2.0Page 9-3
VisuaLink 128/384 User Guide Chapter 9
Area Condition Check Item and Countermeasures
NetworkUnable to connect to a 
remote site[When placing a call, the line immediately hangs up]
· Make sure the network is connected.?
· The line could be busy.  Please try later.
· Verify the line conditioning setting match that for the VL.
[Line disconnects a few seconds/minutes after placing a call]
· The line could be busy.  Please try later.
· Remote equipment could be turned OFF.
· Verify the number called.
[The line is disconnects during communication]
· Failure could have occurred on the line, which has caused the line to 
disconnect.  Please try connecting again.
[Voice and picture are not received after connecting]
· A line failure has occurred.  Please disconnect and replace the call.
· A communication protocol failure with the remote address has occurred.  
Please disconnect, power OFF and ON the equipment to clear the 
status.  Please try connecting again after the status has cleared.
[There are random errors with the voice and picture]
· If a line error or a equipment failure occurs during communication, noise 
in audio and/or error in picture may occur.  Please disconnect once and 
reconnect.
If after everytime you try to 
dial a call, the system 
immediately ask you to 
redial[ISDN is not present]
· Check the ISDN line connection.  The VisuaLink has a S/T interface and 
requires an NT12 to be connected between the VisuaLink and your ISDN 
line unless the VisuaLink is connected to a PBX.
· Make sure the ISDN cable to the system is securely attached.
· SPID and/or ISDN number entered incorrect
· Check the Local Line setting
· Run a Local Line loopback from the maintenance settings.
If you can make calls to 
some sites but not others.[ISDN provisioning]
· Need to confirm ISDN provision from the Teleco. 
						

							Page 9-4NDA-24230 Issue 2.0
Chapter 9 VisuaLink 128/384 User Guide
This page is for your notes. 
						

							NDA-24230 Issue 2.0Page A-1
VisuaLink 128/384 User Guide Appendix A
Appendix A   Audio/Data/Video Bit Rate Assignment Table
64kbps (1B)
±
128kbps (2B ~ 6B)
Note:
x: Setting impossible
0.0: Setting is possible but video transmission is not possible.
Selection of Audio Coding Method G.711 m-
LAW PCMG.722 SB-
ADPCMG.728 LD-
CELPNo Audio
Audio Communication Speed (kb/s) 56.0 48.0 16.0 0.0
Video 
Communication 
SpeedMLP 4kbps LSD off 0.0 10.4 42.4 54.4
LSD 1.2 kbps 0.0 9.2 41.2 57.2
LSD 9.6 kbps x 0.0 32.8 48.8
MLP 6.4 kbps LSD off 0.0 8.0 40.0 56.0
LSD 1.2 kbpsxxxx
LSD 9.6 kbpsxxxx
Selection of Audio Coding Method G.711 m-
LAW PCMG.722 SB-
ADPCMG.728 LD-
CELPNo Audio
Audio Communication Speed (kb/s) 56.0 48.0 16.0 0.0
Video 
Communication 
SpeedMLP 4kbps LSD off 64.8 72.8 104.8 120.8
LSD 1.2 kbps 63.6 71.6 103.6 119.6
LSD 9.6 kbps x 63.2 95.2 111.2
MLP 6.4 kbps LSD off 62.4 470.4 102.4 118.4
LSD 1.2 kbpsxxxx
LSD 9.6 kbpsxxxx 
						

							Page A-2NDA-24230 Issue 2.0
Appendix A VisuaLink 128/384 User Guide
This page is for your notes. 
						

							NDA-24230 Issue 2.0Page B-1
VisuaLink 128/384 User Guide Appendix B
Appendix B  Software Upgrade Instructions
This appendix contains instructions for upgrading your VisuaLink 128  system 
software.  If you have any question about the upgrade, please call your 
videoconferencing provider.  
Upgrade Instructions
To upgrade your system, all you need to do is dial into a software upgrade server 
from your system.  The server will recognize your system and upgrade your system 
automatically.  When the upgrade is complete, you restart your system and do an 
environmental initialization.  
Upgrade to the latest version
1. Press CALL
 button on the wireless remote controller.
2. Select the menu item: PLACE MANUAL DIAL CALL
. 
3.  Enter the Software upgrade server phone #.
· Phone number 1: 972-719-5862
· Phone number 2: 972-719-5863
Note:
Depending on your network, you may have to enter a prefix before the 
number.
4.  Select a speed of 
· When the call connects, Call connected appears, and the update begins 
automatically.  When the upgrade is complete, the system asks you to restart 
the system.
5. Press CALL
· When the call connects, Call connected appears, and the update begins 
automatically.  When the upgrade is complete, the system asks you to restart 
the system
6.  When the upgrade is complete, restart your system and environmental 
initialize.
Note:
The speed setting in the CODEC should be set to 128 no matter which 
system is being upgraded.
MENU
CALL
CAMERA
CONTROL
ENTER
NUMBER
PA G E  U P
Place Manual Dial Call
Phone Number 1
  
[    ]
Phone Number  2
  [                         ]
Speed : 
Press ENTER or CALL after entering
Press CANCEL to go to Call Screens 
						

							Page B-2NDA-24230 Issue 2.0
Appendix B VisuaLink 128/384 User Guide
Environmental Initialize
1. Press the  MENU
 button on the Wireless remote controller.
2.  Using the wireless remote controller select the On-Screen ICON labeled 
SETTING ENVIRONMENTS
.
3. Press the ENTER
 button.
4. Enter the PASSWORD
 and then press the ENTER
 button on the wireless 
controller.
5.  Using the wireless remote controller select the On-Screen ICON labeled 
MAINTENANCE
.
6. Press the ENTER
 button.
7. Locate the PAGE UP
 button on the wireless remote controller.  Press the 
button once.
8.  Using the wireless remote controller select the Environmental Initialize.
9.  When the environmental initialize is complete, the system asks you to restart 
the system.
10.  Restart the system.
VisuaLink Software Revision History
The VisuaLink Software Revison History is located at the following Web 
site: 
http://www.cng.nec.com/html/products.htm
1. Click on the NTAC icon   or select SUPPORT from the menu bar 
at the top of the screen.
2. At the CNG SUPPORT screen, click on the NTAC Online
 text.
3. At the National Technical Assistance Center screen, click on the 
Knowledge Base icon  or the Knowledge Base text on 
the menu bar.
4. At the Knowledge Base screen, Click on the here that is highlighted in 
blue on the line For Frequently Asked Questions (FAQs), click here.  
5. Click on the VisuaLink Software Revision History text that is in blue.  
This will take you to the revision history.
 
Note:If you have a problem with this procedure, please call the NTAC 
support line at 1-800-852-4632. 
						

							NDA-24230 Issue 2.0Page B-3
VisuaLink 128/384 User Guide Appendix B
F/W download On Screen Display (OSD
)
Connection to the version up center.
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
Maintenance being performed from the Center.
  Please wait …..
  Start to download program.
Maintenance being performed from the Center.
  Please wait …..
  Your version is the same as the Center.
In case of same
version.
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
Maintenance being performed from the Center.
  Please wait …..
  Start to download program
  Download in progress
100/999
 Disconnected the line.
     TIME  :  00H 00M 00S
016 Normal clearing
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
Maintenance being performed from the Center.
  Please wait …..
  Acquired program from the Center. 
						

							Page B-4NDA-24230 Issue 2.0
Appendix B VisuaLink 128/384 User Guide
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
  Program is being upgraded
  Please wait …..
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
  Program is being upgraded.
  Please wait …..
  
Initializing now
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
  Writing Program to memory
  Please wait …..
  
Writing now 
						

							NDA-24230 Issue 2.0Page B-5
VisuaLink 128/384 User Guide Appendix B
The system shouldn’t be powered down when
the initialize screen starts.  Otherwise boot up
program will be erased.
  Verifing Program
  Please wait …..
  
Verifying now
Upgrade is complete.
Please power the system off and back on. 
						

							Page B-6NDA-24230 Issue 2.0
Appendix B VisuaLink 128/384 User Guide
This page is for your notes.