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NEC 128 - page 1
V isuaLink 128/384 General Description NEC America Inc. July , 1998 Stock # 0293739 NDA-24229, Issue 1 ...
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NEC 128 - page 2
LIABILITY DISCLAIMER NEC Ameri ca, Inc. reserves the right to c hange the specifi cations , functions, or featur es, at any time, without notice . NEC Amer ica, Inc . has pr epared this document for the exclusi ve use by its em ployees and custome rs. The inform ation containe d herein is the property of NE C America, In c. and s hall not be r epro ...
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NEC 128 - page 3
i VisuaLi nk 128/38 4 General D escription Contents Introduction . . . . . . . . . . . . . . . . . . . . . . . 1-1 Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2 Applicatio ns . . . . . . . . . . . . . . . . . . . . . . . . 1-5 Vi suaLink Docu mentation . . . . . ...
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NEC 128 - page 4
ii Conte nts VisuaLin k 128/384 Gene ral Desc ription Spec ification s . . . . . . . . . . . . . . . . . . . . . 5-1 Genera l Specifications . . . . . . . . . . . . . . . . 5-1 Operating Modes & Features . . . . . . . . . . . 5-7 ...
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NEC 128 - page 5
1-1 V isuaLink 128/384 General De scription Introduction Overv iew In toda y ’s fast paced busin ess climate , timely access to accurate informa tion is a cri tical res ource in every succes sful organ ization. Often, thi s informati on must b e communi cated face-to-fa ce. How ever , with busy schedu les and rem ote lo cations, getting ev eryone ...
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NEC 128 - page 6
1-2 Introduction Vis uaLink 1 28/384 G eneral D escriptio n Features VisuaLink incorpora tes features for today ’s high performa nce technolo gies while mak ing a vi deoco nference system easy and cost effective to o perate. T otal Integration • singl e compact unit VisuaLink is a sel f-containe d unit. It integr ates hardware and software into ...
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NEC 128 - page 7
Introduct i on 1-3 V isuaLink 128/384 General De scription Phone-Li ke Di ali n g • V oicePoint+ co nnectivity for ease of dialing For th o se not wan t ing t o di a l u sin g the V i sua L ink re m ote, an N EC V oic e Point+ c a n be con n ected to t h e V isu a Li n k. (The V oi ceP o i n t+ is a ta b le t op sp e akerph o ne u nit for conf e ...
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NEC 128 - page 8
1-4 Introduction Vis uaLink 1 28/384 G eneral D escriptio n Field Upgradable • same software used for bot h 128 & 38 4 uni ts Often, k eeping up w ith techno logy ca n be a full -time j ob in its elf. Wheneve r a vendor relea ses a new softwar e update, you mu st wait for it to arri ve by mai l or dow nload p atches from a Web site. B ut this ...
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NEC 128 - page 9
Introduct i on 1-5 V isuaLink 128/384 General De scription Applications The Videoconfe rencing ma rket is gr owing r apidly wi th the more w idely availab le ISDN networ k and cost effectiv e videoc on fer en cing uni ts such as VisuaLink. Videoc onferenci ng is bei ng adapted to a wide variety of appli catio ns. • General Business prov ides many ...
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NEC 128 - page 10
1-6 Introduction Vis uaLink 1 28/384 G eneral D escriptio n V isuaLink 12 8/384 Poin t-to-Point Applicat ions NEC VisuaLink brings a whole new catego ry of porta ble and ea sy to use videoc onferenc ing syste ms. Poin t-to-point applicat ions such as remote pre sentation s and rem ote med ical exper tise are p ossible wi th Vis ua Li n k V isuaLink ...
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NEC 128 - page 11
Introduct i on 1-7 V isuaLink 128/384 General De scription V isuaLink Documentation Addit ional in formatio n on Visu aLink can be foun d in the f ollowi ng NEC publica tions : • V is uaLink User Manual , St ock # 0293884 • V is uaLink Quick Instal lation Guide , S tock # 02 93885 • V isu aLink Engineering Guide , S tock # 02938 86 Consult th ...
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NEC 128 - page 12
1-8 Introduction Vis uaLink 1 28/384 G eneral D escriptio n ...
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NEC 128 - page 13
2-1 V isuaLink 128/384 General De scription Application Configurations VisuaLink is the hea rt of a videoc onferenc ing syst em. The co mpact VisuaLink unit can b e conf igured wi th a var iety of pe riphera l equipmen t to addres s most any vide oconferenc ing need. Three con figurati ons best use the VisuaLi nk techn ology to p rovide solu tions ...
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NEC 128 - page 14
2-2 Applicati on Configur ations Vis uaLink 1 28/384 G eneral D escriptio n Roll-About • easily m oved, use in active locations The V i suaLink Roll-About application config uration p rovides a tu rn-key solu tion to mos t genera l busi ness us es for vi deocon ferenci ng. The Roll-A bout incl udes e verything necess ary for hi gh qual ity videoc ...
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NEC 128 - page 15
Applicati on Configuratio ns 2-3 V isuaLink 128/384 General De scription Roll-About Component s The Roll- About inc orporates the follo wing comp onents in to one eas y to move u nit for v ideoconf erencing: • Video Cabi net • VisuaLink 128 or VisuaLink 384 Code c • Video Monitor • M ot ion Ca me ra • Microphon e •C a b l e K i t Video ...
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NEC 128 - page 16
2-4 Applicati on Configur ations Vis uaLink 1 28/384 G eneral D escriptio n Motion Video Camera Motion V ideo Came ra The motion camera ( D30) is a full col or camera with the followin g features : • Effectiv e picture elemen ts of 380,0 00 (EVI-D 30) prov ides high-res olution v ideo ima ges • High s peed pan/t ilt/zo om actio ns co ntrolled b ...
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NEC 128 - page 17
Applicati on Configuratio ns 2-5 V isuaLink 128/384 General De scription Desktop PC • als o av ailab l e wit h control software The VisuaLink Desktop PC app licatio n confi guratio n provid es a busines s solut ion for v ideocon ferencin g at the indivi dual desk top. Desktop P C compon ents inst all and wo rk with a us er ’s desktop PC system ...
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NEC 128 - page 18
2-6 Applicati on Configur ations Vis uaLink 1 28/384 G eneral D escriptio n Desktop PC Components The Des ktop PC in corpor ates the f ollowi ng compon ents: • VisuaLink 128 or VisuaLin k 384 • Video Captu re Boar d • CCD Desktop Ca mera • Microphon e •C a b l e K i t • VisuaLink Director softw are V is uaLink 128/384 Depend ing on the ...
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NEC 128 - page 19
Applicati on Configuratio ns 2-7 V isuaLink 128/384 General De scription V is uaLink Director Sof tware This Micros oft Windows 9 5 ® softwar e allows the PC to c ontrol th e VisuaLink 128/384 uni t, thereby p rovidi ng comple te control o f the videoc onference. A ll funct ions are provided with easy to use PC screen messag es and menus. Options ...
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NEC 128 - page 20
2-8 Applicati on Configur ations Vis uaLink 1 28/384 G eneral D escriptio n Personal Computer Personal Computer Requirements VisuaLink Desktop PC i s added to a user ’s P ersonal Com puter . The general requireme nts for a per sonal c omputer to support De sktop PC are: • Pentium CPU (100 Mhz or faster) • 16 Mb of s ystem me mory • Availabl ...
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NEC 128 - page 21
Applicati on Configuratio ns 2-9 V isuaLink 128/384 General De scription Gateway The VisuaLink Gateway ap plicati on config uration a llows shar ed VisuaLink 128/384 uni ts between many us ers. Ex isting d esktop vid eo/ audio equipment users can no w have hig h qual ity videoc onferenc ing with VisuaLink . VisuaLink un its can be configur ed in on ...
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NEC 128 - page 22
2-10 Applic ati on Co nfig urat ion s Vis uaLink 1 28/384 G eneral D escriptio n V isuaLink Dire ct Connect Gat eway The VisuaLink Di rect Co nnect Gateway applic ation co nfiguration uses VisuaLink 128/384 units as shared re source s for different vi deo/audio users and group s in a fac ility . The diagram shows VisuaLink units and a cable patc h ...
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NEC 128 - page 23
3-1 V isuaLink 128/384 General De scription T echnical Description VisuaLink 128 and VisuaLin k 384 employ th e latest Co dec (coder/ decoder ) techno logy for di gital vi deo/au dio appli catio ns. VisuaLin k emplo ys echo ca ncellin g and c ontrol s ystem l ogic to e nhance th e signal clarity and ea se of us e. The diagr am illustr ates the m ai ...
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NEC 128 - page 24
3-2 T echnical De scription Vis uaLink 1 28/384 G eneral D escriptio n V ideo & Aud io Interfaces These circ uits prov i d e the corr e c t el e c t ric a l a nd p r o tocol c o nn e c t io n s for vi d eo so u rc es, vi d e o out p uts a n d dis p l a y m onitor s, a u dio s ources, and a u dio ou t puts . C o nn e ctio n s a re prov i d ed f ...
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NEC 128 - page 25
T echnical D escript ion 3-3 V isuaLink 128/384 General De scription System Control The Syste m Control circuit man ages the m any sepa rate func tions of VisuaLink. This circui t provid es control for the Co dec and ot her device s. V arious con trol d evices can be used for VisuaLin k: VisuaLink infrared r emote co ntrol, an y analog phone, a n N ...
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NEC 128 - page 26
3-4 T echnical De scription Vis uaLink 1 28/384 G eneral D escriptio n ...more on H.320 V ideocon ferencing ITU-T H.320 s pecifies te chni cal requir ements fo r narrow- band visua l telephone system s and t erminal equip ment-- typi cally for videoc onferencing and vide ophone se rvices. The H.320 standard de fines the minim um requir ements tha t ...
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NEC 128 - page 27
T echnical D escript ion 3-5 V isuaLink 128/384 General De scription V ideo Processing Video Processin g is a complex pr ocess to reduc e the amount of ima ge data that must be proces sed on any gi ven pict ure frame. If pr ocessing is not us ed, vide oconfere nce pe rformance is red uced b y condit ions such as comp lex pict ure backg rounds, poor ...
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NEC 128 - page 28
3-6 T echnical De scription Vis uaLink 1 28/384 G eneral D escriptio n ...
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NEC 128 - page 29
4-1 V isuaLink 128/384 General De scription Installation & Maintenance Installation Requirements The compac t VisuaLink un its need no speci al insta llation. H owever , the follo wing shoul d be cons idered whe n using or mountin g the VisuaLin k uni ts. • Place th e VisuaLink un it on a stable s urface (suc h as: a des k, or mounted i n a v ...
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NEC 128 - page 30
4-2 Installat ion & Mainten ance Vis uaLink 1 28/384 G eneral D escriptio n Maintenance Requirements There are no user s erviceable ( see Not e ) compon ents, modu les, or circu its inside the VisuaLin k uni ts. If expe rienci ng probl ems, foll ow these gui delines : • Ens ure a pow er sour ce is conn ected to th e Vi suaLink unit a nd th e ...
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NEC 128 - page 31
5-1 V isuaLink 128/384 General De scription Specifications General Specif i cations The f o llowing di agra m s illus trate t h e V isu a Li n k 1 28 a n d V is u a Li n k 3 8 4 units. A ll fron t an d r e ar p a nel c o nn e ctio n s a re show n . (S e e the Gen e r a l Para m eters ta b l e for dime n si ons.) V isuaLink 12 8/384 Fron t & Rea ...
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NEC 128 - page 32
5-2 Specifica tions Vis uaLink 1 28/384 G eneral D escriptio n V is uaL ink 128/3 84 T op Vie w V isuaLink 128/384 Side Vi ew ...
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NEC 128 - page 33
Specific ations 5 -3 V isuaLink 128/384 General De scription General P arameters Parameter VisuaLink 128 VisuaLink 38 4 Connection Line T ype Basic Rate Interface (BRI) National ISDN-1 Basic Rate Interface (BRI) National ISDN-1 Line T ransmission Speed •T e l • 64 Kbps (B), 2x64 Kbps (2B) • Upgradeable to 384 Kbps Note: Px56 Kbps mode complie ...
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NEC 128 - page 34
5-4 Specifica tions Vis uaLink 1 28/384 G eneral D escriptio n General P arameters (Cont) Parameter VisuaLink 128 VisuaLink 38 4 Data Seria l • 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 Cont ...
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NEC 128 - page 35
Specific ations 5 -5 V isuaLink 128/384 General De scription External Interface Parameters Parameter VisuaLink 128 VisuaLink 38 4 Line Interface • Applicable Line: (1) ISDN BRI (2) High speed digital leased line • Interface: National ISDN-1 • Connector: 1 Modular jack (RJ-45) • T ransmission speeds: 1) 64/56 Kbps (B) 2) 2x64/2x56 Kbps (2B) ...
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NEC 128 - page 36
5-6 Specifica tions Vis uaLink 1 28/384 G eneral D escriptio n External Interface Parameters (Cont) Parameter VisuaLink 128 VisuaLink 38 4 Audio Output Line Audio Out • Output level: -10dBv • Excessive Load Level:+3dB (G71 1, G728), +9dB (G722) • Output Impedance: Low impedance, unbalanced • Connector: RCA pin jack • Output level: -10dBv ...
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NEC 128 - page 37
Specific ations 5 -7 V isuaLink 128/384 General De scription Operating Modes & Features The followi ng prov ides a summ ary of th e main operatin g modes a nd features for VisuaLink . V isuaLink Unit Control VisuaLink can be control led by on e of three devices : • VisuaLink Wireless In frared Remo te Control • V o icePoin t+ or Anal og Pho ...
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NEC 128 - page 38
5-8 Specifica tions Vis uaLink 1 28/384 G eneral D escriptio n Line Interface Control Originate at a 64 Kb ps or 56 Kbps to th e North A merican Nat ional ISDN-1. Line Connect Modes • BRI interf ace with VisuaLink 128/384 and ot her ISDN equi pment (T A, F AX, etc.) . • Selects an in coming c all in a sub a ddress se tting V ideo Display/Output ...
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NEC 128 - page 39
Specific ations 5 -9 V isuaLink 128/384 General De scription Multi-Point Conference Control Multi-Poi nt Confe rence Modes : •A u d i o S w i t c h • Chairma n mode ( Video sele ction, local r oom tran smis sion, multiple addr ess, re mote came ra contr ol, point er co ntrol, s till picture transmis sion, remot e camera switch) • Sel ectiv e ...
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NEC 128 - page 40
5-10 Specificati ons Vis uaLink 1 28/384 G eneral D escriptio n Serial Port Modes Seri al Port 1 • Conso le port ( PC contr ol) • VC-CI ca mera co ntrol port • EVI-D30 camer a contr ol port • T .120 d ata con ference data transm ission port (PC dat a con feren ce) Seri al Port 2 • Conso le port ( PC contr ol) • VC-CI ca mera co ntrol po ...
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NEC 128 - page 41
NEC America Inc. July , 1998 V isuaLink 128/38 4 General De scription Stock # 0293739 NDA-24229, Is sue 1 ...
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