NEC Visualink 128/384 User Guide

							NDA-24230 Issue 2.0Page 1-1
VisuaLink 128/384 User Guide Chapter 1
Chapter 1  Introducing Your VisuaLink
1.1  Applying for ISDN 
BRIThis device cannot be used unless a connection to ISDN BRI Communication 
Line
 is provided.  Verify that a ISDN line exists before the CODEC is installed.
What to watch out for when filling out an ISDN BRI application:
As defined by Bellcore; the ISDN BRI simplified ordering code is EZ-ISDN1.
• The ISDN BRI protocol national ISDN-1.
• The ISDN BRI service must be tariffed and available from the customer’s 
local central office.
• The D-Channel should not permit X.25 packet data.
• The ISDN BRI service must allow videoconferencing calls to be dialed on 
either B-Channel or on both simultaneously.
• Both B-Channel must carry circuit switched videoconferencing data.
• The ISDN BRI line required one or two different SPID numbers.
• The ISDN BRI service must be automatic Terminal Endpoint Identifiers 
(TEIs).
Voice and data features:
• Flexible calling
• Call forwarding variable
• Additional call offering
• Call number identification
• Redirecting number delivery
A How to Order ISDN BRI Guide
 has been prepared.  This guide should be read 
thoroughly and forwarded to your Teleco provider.  This document is located in 
the Appendix D
. 
						

							Page 1-2NDA-24230 Issue 2.0
Chapter 1 VisuaLink 128/384 User Guide
1.2  Unpacking
• Opening the Box
Please take out the device without giving any impact on it when opening the box.  
Please keep the box after opening it, since you may use it when you send the 
device for repair, maintenance and/or travel.
• The Contents of the Package
The VisuaLink 128 and VisuaLink 384 package contains the following items.  
Please verify these items are contained the box.
Table 1-1: Parts List for the VL128 and VL384
Item Description
(A)  Main Unit
This is the main unit of the VisuaLink 128 or VisuaLink 384.  
(B)  Remote controller and batteries
This is a remote controller used to control the VisuaLink 128 or 
VisuaLink 384.  Two AA batteries are also included.
(C)  AC Adapter
This is an AC adapter for VisuaLink 128 or VisuaLink 384.
(D)  VisuaLink 128/384 User Guide Provides procedures for installation, operations and 
maintenance of the VisuaLink 128 and VisuaLink 384. 
						

							NDA-24230 Issue 2.0Page 1-3
VisuaLink 128/384 User Guide Chapter 1
Table 1-1:  Parts List for the VL128 and VL384 
(continued)
(E)  Audio Video Cable
This cable is used to connect peripheral devices such as 
camera and TV to the VisuaLink 128 or VisuaLink 384.
Table 1-2: Optional parts to be provided
(A)  BRI Network Cable
This cable is used to connect the VisuaLink 128 or VisuaLink 
384 to an ISDN BRI network.
Note:  Three (3) cables are required for a VisuaLink 384.
(B)  Microphone
The microphone connects to the rear of the VisuaLink 128 or 
VisuaLink 384.  There are 3 microphone inputs.
(C)  Video Cable
This cable is used to connect the VisuaLink 128 or VisuaLink 
384 S-Video (output video) to a TV monitor. 
						

							Page 1-4NDA-24230 Issue 2.0
Chapter 1 VisuaLink 128/384 User Guide
Table 1-2:  Optional parts to be provided (continued)
(D)  Camera
A pan/tilt zoom focus camera that provides a video image shot 
to the far-site.
Note:  Used in the turnkey rollabout configurations.
(E)  PC Camera
A fixed camera used to provide a one or two person shot to 
the far site.
Note:  Used in the desktop application.
(F)  Monitor
A TV monitor to provide for viewing of the far-site.
Note:  Provided with the turnkey rollabout configuration.
(G)  Cabinet
A equipment stand to house all the Rollabout peripherals 
such as the VisuaLink and NT1’s.
Note:  Cabinet is used for the turnkey rollabout configuration. 
						

							NDA-24230 Issue 2.0Page 2-1
VisuaLink 128/384 User Guide Chapter 2
Chapter 2  Introduction of VisuaLink
2.1  About your 
VisuaLinkThe VisuaLink 128 and the VisuaLink 384 are devices that easily realize a 
multimedia conference by transmitting video, audio, and data to a remote location 
with the use of BRI service.  The VisuaLink 128 and VisuaLink 384 provide a 
low-end TV conference for a small group of people when connected to a hands-
free telephone.  In addition, with a connection with a PC, a TV conference using 
data conference application such as an electric presentation will be available.  The 
VisuaLink 128 and VisuaLink 384 also provide a high-performance model with a 
built-in echo canceller applicable for video conferences with microphones and 
speakers in a conference room.
2.1.1  The characteristics of VisuaLink 128 are
• You can use it as a high quality TV phone by connecting a TV, telephone, and 
video camera.
• You can use it as a serious business videoconference system by connecting 
optional video camera, microphone, and speakers.
• You can easily operate it from a telephone or a remote controller.
• You can connect any PC model for a conference with a PC.  (However, a data 
conference software is required in your PC.  Please contact to sales rep. to get 
information for what type of software is available for the data conference with 
the VL128.
2.1.2  The characteristics of VisuaLink 384 are the same as those for the VisuaLink 
128 listed above, plus
• It has an internal IMUX.
• You can connect to three (3) NT-1s. 
						

							Page 2-2NDA-24230 Issue 2.0
Chapter 2 VisuaLink 128/384 User Guide
2.2  Front Panel 
DescriptionThis section briefly describes names and features of the VisuaLink 128 and 
VisuaLink 384.
¬
POWER
 Switch
The push-button switch is used to turn on and off the main power.  When the 
power is on, the power lamp will be lit.
Á
Remote controller optical receiver
This is a optical receiver, which receives signal from remote controller.
Â
LED Display
Power Lamp (power) : a green light will eluminate when the power is ON.  
When the VisuaLink is powered OFF, there is no light.
Line connection status lamp (LINE)
LINE B1: Flashing light indicates channel is calling to the remote end.  
Steady light indicates connection/communicating with the remote end.
LINE B2-B6: Flashing light indicates channel is calling to the remote end.  
Steady light indicates connection/communicating with the remote end.
Ã
Head set terminal
The head set jack is used to connect an optional headset.
POWER HEADSET
POWER
LINE
B1   B2-B6
¬ÁÂ
à 
						

							NDA-24230 Issue 2.0Page 2-3
VisuaLink 128/384 User Guide Chapter 2
2.3  VisuaLink 128 
Rear Panel 
Description
¬
VIDEO 2 IN (S-Video input):  Provides an S-Video input connection for a 
camera or other video source.
Á
VIDEO 1 IN (NTSC input):  Provides a composite input connection for a 
camera or other video source.
Â
VIDEO 2 OUT (S-Video output):  Provides an S-Video output connection to 
a monitor or other display device.
Ã
VIDEO 1 OUT (NTSC output):  Provides a composite output connection to a 
monitor or other display device.
Ä
AUDIO IN:  Provides a line level audio input from a VCR, audio mixer, other 
audio transmission device or External Echo Canceller connection.
Å
AUDIO OUT (AUX output):  Provides a line level audio output to an 
amplified speaker, other audio receiver device or External Echo Canceller 
connection.
Æ
MIC 1~3:  Mini stereo phono plugs connection for one to three microphones.
Ç
SERIAL 1 (RS232C input):  Provides a mini din connection conforming to 
RS232 for connection to a PC or other data device.
È
SERIAL 2/ RMT (RS232C input/output):  Provides a mini din connection 
comforming to RS232 for connection to a PC,  camera or other RS232 device.
É
TEL terminal:  Provides an RJ11 jack for connecting the VoicePoint or other 
two wire telephone.
S/T LINE terminal:  Provides an ISDN BRI S interface used to connect to the 
communication data line. 
DC power input terminal:  Provides an AC adapter interface for AC power.
Grounding terminal:  Provides a ground connection at should be connected to 
earth ground.
+
+
++
+
DC IN 5V+ -  Serial1           Serial2/RMT
O
U
T
I
N
VIDEO2                                VIDEO1            AUDIO
++TEL                           S/T LINEMIC1                          MIC2                          MIC3
¬
Á ÂÃ Å Æ
11
13
12Ç
10
È
Ä
11
12
13 
						

							Page 2-4NDA-24230 Issue 2.0
Chapter 2 VisuaLink 128/384 User Guide
2.4  VisuaLink 384 
Rear Panel 
Description
¬
VIDEO 2 IN (S-Video input):  Provides an S-Video input connection for a 
camera or other video source.
Á
VIDEO 1 IN (NTSC input):  Provides a composite input connection for a 
camera or other video source.
Â
VIDEO 2 OUT (S-Video output):  Provides an S-Video output connection to a 
monitor or other display device.
Ã
VIDEO 1 OUT (NTSC output):  Provides a composite output connection to a 
monitor or other display device.
Ä
AUDIO IN:  Provides a line level audio input from a VCR, audio mixer, other 
audio transmission device or External Echo Canceller connection.
Å
AUDIO OUT (AUX output):  Provides a line level audio output to an 
amplified speaker, other audio receiver device or External Echo Canceller 
connection.
Æ
MIC 1~3:  Mini stereo phono plugs connection for one to three microphones.
Ç
SERIAL 1 (RS232C input):  Provides a mini din connection conforming to 
RS232 for connection to a PC or other data device.
È
SERIAL 2/ RMT (RS232C input/output):  Provides a mini din connection 
comforming to RS232 for connection to a PC,  camera or other RS232 device.
É
TEL terminal:  Provides an RJ11 jack for connecting the VoicePoint or other 
two wire telephone.
S/T LINE terminal:  Provides three (3) ISDN BRI S interfaces to connect to 
the communication data line. 
DC power input terminal:  Provides an AC adapter interface for AC power.
Grounding terminal:  Provides a ground connection at should be connected to 
earth ground.
+
+
++
+
DC IN 5V+ -  Serial1           Serial2/RMT
O
U
T
I
N
VIDEO2                                VIDEO1            AUDIO
++TEL                   LINE 1                           LINE 2                          LINE 3MIC1           MIC2          MIC3
¬
Á ÂÃÅ
Æ
11
13
12Ç
10
È Ä
11
12
13 
						

							NDA-24230 Issue 2.0Page 2-5
VisuaLink 128/384 User Guide Chapter 2
Table 2-1: VisuaLink 128 and VisuaLink 384 General Parameters
Parameter VisuaLink 128 VisuaLink 384
LineConnection
Line TypeBasic Rate Interface (BRI)
National ISDN-1Basic Rate Interface (BRI)
National ISDN-1
Transmission 
Speed•TEL
• 64 Kbps (B) 
• 2x64 Kbps (2B)
• Upgradeable to 384 Kbps
 
Note:Px56 Kbps mode complies with
B and 2B•TEL
• 64 Kbps (B), 2 x 64kbps (2B)
• 128, 192, 256, 320, 384 Kbps
• 56, 112, 168, 224, 280, 336kbpsNote: P x 56kbps mode complies with B and 2B.
Interface One RJ-45 Modular Jack Three RJ-45 Modular Jacks
VideoCompression H. 261, H.263 H. 261, H.263
Resolution• CIF (resolution: 352x288) (H.261)
• QCIF (resolution: 176x144) (H.263)
• Annex D (720x480) still graphic 
transmission / reception• CIF (resolution: 352x288) (H.261)
• QCIF (resolution: 176x144) (H.263)
• Annex D (720x480) still graphic
 transmission / reception
Input / Output 
Interface• NTSC composite: 1 input, 1 output
(RCA pin jack) 
• S-Video component: 1 input, 1 output
(DIN 4-pin)• NTSC composite: 1 input, 1 output (RCA pin 
jack) 
• S-Video component: 1 input, 1 output (DIN 4-
pin)
CameraProtcol H/281, NEC video method H/281, NEC video method
Control VCCI, D3O VCCI, D3O
AudioCompression• G.711 (3.4kHz)
• G.722 (7kHz) 
• G.728 (3.4kHz)• G.711 (3.4kHz)
• G.722 (7kHz) 
• G.728 (3.4kHz)
Echo Control 7kHz built-in echo canceller 7kHz built-in echo canceller
Input / Output
Interface• Line Audio: 1 input, 1 output (RCA pin 
jack)
• Headset: 1 input, 1 output (stereo mini 
plug)
• Analog phone port: 1 input 1 output (RJ-
11 modular jack)
• Microphone input port: 3 inputs (mono 
mini plug)• Line Audio: 1 input, 1 output (RCA pin jack)
• Headset: 1 input, 1 output (stereo mini plug)
• Analog phone port: 1 input, 1 output (RJ-11 
modular jack)
• Microphone input port: 3 inputs (mono mini 
plug)
DataSerial• Ports: 2 Serial (DIN 8-pin)
• Speed: 1.2-38.4 Kbps, asynchronous
• Start-Stop synchronization• Ports: 2 Serial (DIN 8-pin)
• Speed: 1.2-38.4 Kbps, asynchronous
• Start-Stop synchronization
Control• PC control
• Camera control
• T/120 data transmission
• Generic data transmission• PC control
• Camera control
• T/120 data transmission
• Generic data transmission 
						

							Page 2-6NDA-24230 Issue 2.0
Chapter 2 VisuaLink 128/384 User Guide
Table 2-1: VisuaLink 128 and VisuaLink 384 General Parameters (continued)
Parameter VisuaLink 128 VisuaLink 384
User Interface• Wireless remote control
(built-in IR receiver)
• PC connected (with serial port)
PC software sold separately is required
• Telephone (for analog line, 2-line cable,
RJ-11)• Wireless remote control
(built-in IR receiver)
• PC connected (with serial port)
PC software sold separately is required
• Telephone (for analog line, 2-line cable,
RJ-11)
 Unit Size• Dimensions: 10”(W) x 7”(D) x 2.25” (H)
                    (254 mm x 177 mm x 57 mm)
• Weight:   less than 5 lbs. (3 kg.)• Dimensions: 10”(W) x 7”(D) x 2.25” (H)
                     (254 mm x 177 mm x 57 mm)
• Weight:   less than 5 lbs. (3 kg.)
Power
RequirementsAttached external AC adapter:
• Input Voltage: 90-110 VAC, 50-60 Hz
• Output Voltage: +5VDC @ 4.2 A (max)Attached external AC adapter:
• Input Voltage: 90-110 VAC, 50-60 Hz
• Output Voltage: +5VDC @ 4.2 A (max)
Operating
Environment• Temperature: 40°-104° F (5°-40
° C)
• Humidity: 20-80%, Non-condensing• Temperature: 40°-104° F (5°-40° C)
• Humidity: 20-80%, Non-condensing