Manuale d’uso / di manutenzione del prodotto ViaVideo del fabbricante Polycom
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ViaVi deo User’s Guide November 2000 Edit ion 3151-10 065-005 A ViaVideoUG.book P age 1 Thursday, December 7, 2000 2:49 PM.
ViaVideoUG.book P age 2 Thursday, December 7, 2000 2:49 PM.
Important Information © 2000 Polycom, Inc. All rights reserved. No part of this document m ay be reproduced or transmit ted in any form or by any me ans, electronic or mechanical, for any purpose, without the expres s written permission of Polycom, Inc.
Important Safeguards Read and understand the following instructions before using the system : • Close supervision is nec essary when the system is used by or near children. Do not leave unattende d while in use. • Only use electr ical extension cor ds with a curr ent rating at l east equal to that of the sys tem.
© Polyco m, Inc. v Via Vid eo User’ s Guid e Contents ViaV ideo Qu ick Start System Requirements an d Install ation... ................... ............. ................... ....... 1 Hardware Require ments ................. ............. ..........
Contents ViaVideo Use r’ s Guide vi www .po lycom.c om Syst em Infor matio n and Di agnosti cs Using the System Info rmation S creens ..... ................... ............. ................... .... 33 Diagnostic s ...................... ...........
Contents © Polyco m, Inc. vii Via Vid eo User’ s Guid e Router With Firewall, Us ing a DMZ . .................... ............ .................... 68 Configure Y our ViaVideo for NAT .......... ............ .................... 69 Assign y our ViaVideo to the DMZ .
Contents ViaVideo Use r’ s Guid e viii www .po lycom .com ViaVideoUG.book P age viii T hursday, December 7, 200 0 2:49 PM.
© Polyco m, Inc. 1 Via Vid eo User’ s Guid e 1 ViaVideo Quick Start This cha pter explai ns how to g et started wi th the Pol ycom ® ViaVid eo TM desktop v ideo com munications system.
Chapter 1 ViaVideo Quic k Star t ViaVideo User ’ s Guide 2 www .pol yco m.co m • If you are using a h eadset w ith m icrophone, it must hav e a si ngle audio connecti on, like those us ed with c ellular pho nes.
Chapter 1 ViaVideo Quic k Star t © Polyco m, Inc. 3 Via Vid eo User’ s Guid e Starting ViaVideo The ViaV ideo appli cation a nd camera un it work togeth er to provide an unpar alleled e xperie nce in c onferenc e room qu ality vide o comm unicatio ns on your deskt op.
Chapter 1 ViaVideo Quic k Star t ViaVideo User ’ s Guide 4 www .pol yco m.co m infor ma tion, see “ Muting Video ,” on page 29. Off: T ur n s the cam era unit of f .
Chapter 1 ViaVideo Quic k Star t © Polyco m, Inc. 5 Via Vid eo User’ s Guid e Headset with microphone: Sele ct this s etting onl y if you ar e using a headset wi th an a ttach ed micropho ne plugged i nto the audi o out por t i n the bac k of the ViaVide o cam era unit.
Chapter 1 ViaVideo Quic k Star t ViaVideo User ’ s Guide 6 www .pol yco m.co m 3. As a fin al ste p , us e the focus knob on to p of the ViaVideo camera u nit to get a clear ima ge in the main scre en ’s near v ideo window (displayed whenev er you are not in a call).
Chapter 1 ViaVideo Quic k Star t © Polyco m, Inc. 7 Via Vid eo User’ s Guid e Note Before you st ar t the ViaVid eo a pplica tion, be sure your camera uni t is tur n ed on.
Chapter 1 ViaVideo Quic k Star t ViaVideo User ’ s Guide 8 www .pol yco m.co m T o conser v e net work ban dwidth, sel ect a lo wer speed. F or m ore infor ma ti on abou t choos ing lin e speeds, see “Diali ng Speeds,” on page 55. 4. Use your k eybo ard or the number buttons on the num ber pad to enter the IP num ber , and cl ick Cal l .
Chapter 1 ViaVideo Quic k Star t © Polyco m, Inc. 9 Via Vid eo User’ s Guid e Network Error The far s ite does n ot answer . There is either a network er ror , or more likely , the far site is not activa ted. Far Site Busy The far s ite is cur ren tly in a c all.
Chapter 1 ViaVideo Quic k Star t ViaVideo Use r’ s Guide 10 www .polycom .com are con nected co rrectly. For mo re infor mation, s ee “Troubl eshooting ,” on page 77. 2. Cl ick Address Book or Speed Dial . This pres ents th e Address Book screen.
Chapter 1 ViaVideo Quic k Star t © Polyco m, Inc. 11 Via Vide o User’ s Guid e a. T o display th e Spee d Di al scre en, click the tab fo r speed dial entr ies on th e right of t he addres s book, o r clic k Spe ed Dial from t he ViaVideo m ain s creen.
Chapter 1 ViaVideo Quic k Star t ViaVideo Use r’ s Guide 12 www .polycom .com F or m ore infor ma tion, see “Us ing the Remote Co ntrol,” on page 16 . Ending a Call To end a call , click Hang Up on the v irtual re mote contr ol. ViaVid eo discon nects im mediately .
Chapter 1 ViaVideo Quic k Star t © Polyco m, Inc. 13 Via Vide o User’ s Guid e Note T o answer a cal l, the Via Video a pplica tio n must be r unning. If the ViaVideo a pplica tion wi ndow is minimized, you ar e still able to receive incoming ca lls a s descri bed above .
Chapter 1 ViaVideo Quic k Star t ViaVideo Use r’ s Guide 14 www .polycom .com ViaVideoUG.book Page 14 Thursday, December 7, 2000 2:49 PM.
© Polyco m, Inc. 15 Via Vide o User’ s Guid e 2 Using ViaVideo Thi s chap ter ex pla ins h ow to use th e foll owi ng Vi aVide o fe atur es: • Calling F ea tures (page 1 5) • Address B ook and .
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 16 www .polycom .com Using the R emote Control When you place a call , a virtual remot e control i s display ed to the right of the V iaVideo scree n. The remo te control lets you perform a variety of ca lling fu nction s.
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 17 Via Vide o User’ s Guid e Snap shot Sends a high-r esolutio n stil l ima ge , or snap shot , to the f ar site durin g a call . This feat ure is des igned for far sites tha t use the Annex D high-resol ution (7 04 x 576) g raphi cs stand ard.
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 18 www .polycom .com Wind ow Contr ols You can perform severa l window c ontrols : • Picture-in -Picture (P IP) • Minim ize Window • Infor ma .
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 19 Via Vide o User’ s Guid e statist ics ( Syste m Info >Dia gnost ics>Net work Stat s or S ystem Info>D iagnosti cs>Adv anced S tats ). T o retur n t o full-display mo de , c lick Home in th e bottom right of the infor ma tio n screen.
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 20 www .polycom .com (for example , QC IF , NetMee ting) are n ot able to receiv e high -reso lut ion sn apshot s . Leaving a Ca llback Me ssage Y ou can also leav e a messa ge with other user s if they ha ve their unit on, but are n ot a t their des k.
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 21 Via Vide o User’ s Guid e Address Book and Speed Dial This sec tion explains how to use the address book and speed di al featu res. This s ection de scribe s: • Using the Addres s Book ( page 21) • Using Sp eed Dia l (page 26) .
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 22 www .polycom .com The addres s book infor ma tion pa nel a t the bo ttom of the Add ress Book screen p rovides infor ma tio n about the selec ted ent r y . In th e example above , Jane Do e’s V iaVideo is set to a line spee d of 128 Kbps.
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 23 Via Vide o User’ s Guid e T o place a call fr om the add ress bo ok: 1. Highligh t an entr y in the Address Book scree n. 2. Cl ick Call or doub le-c lick on the entr y . ViaVideo sh ows the calling scree n.
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 24 www .polycom .com T o modify a local e ntr y , se lect t he entr y in your Ad dress Book and click Edit . Y ou can then modify the e ntr y in for ma tion. Clic k Save to sav e the c hanges t o the addr ess book .
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 25 Via Vide o User’ s Guid e T o registe r with the P olycom Global Addre ss Book or an IL S ser ver: 1. Go to the Directory S ervices screen ( System I nfo>S etup>Direc tory Serv ices ).
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 26 www .polycom .com Using Speed Dial T o access the Speed Dial scree n, click Spee d Dial in th e main screen . Y ou can also access the Spee d Dial screen b y c licking 1-6 or 7-12 on the top a ddress boo k ta b .
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 27 Via Vide o User’ s Guid e Dial Places a call to the se lected entr y . Y o u can also call a s peed d ial entr y by double-c lic king the entr y . Delete Current Deletes t he cur rently sel ected ent r y .
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 28 www .polycom .com displayed in the fa r site vie w . ViaVideo ma intain s your audi o mute setting b etween call s . Via the Au dio Screen The Audio screen ( System In fo>Setup> Audio ) le ts you set Master , Wave , and Line In audi o levels.
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 29 Via Vide o User’ s Guid e The Audio Mi xer d ialo g is di splay ed. Master Vo lume Controls the aud io level for all your P C’s sounds.
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 30 www .polycom .com When you want the fa r site to see you agai n, slide the shutte r back to the on pos ition.
Chapter 2 Usin g ViaVideo © Polyco m, Inc. 31 Via Vide o User’ s Guid e Collaboration and Application Sharing To activa te appl ication sharing software while in a call, cli ck Share on your on-screen r emote. This activates Whiteboard , Chat , Application Sharing , an d File Transfer capabil ities.
Chapter 2 Usin g ViaVideo ViaVideo Use r’ s Guide 32 www .polycom .com ViaVideo dete cts mor e than one IP addres s when: • There is more than one LAN c ard in your P C . • Y ou are u sing a do ckin g sta tion and a PCMCIA network car d. • Y ou are c onnected to your networ k usin g a Vir tual Pr ivate Netw or k (VPN ).
© Polyco m, Inc. 33 Via Vide o User’ s Guid e 3 System Information and Diagnostics This cha pter pro vides a description o f ViaVid eo’s sy stem informat ion an d diagnostic screens , and expl ains how to view settings , run dia gnostic tests, an d make c hanges to y our sy stem.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 34 www .polycom .com Each of the sys tem infor ma ti on screens has a Menu icon in the lower right cor ner tha t retur ns you to the previous screen .
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 35 Via Vide o User’ s Guid e Diag nostic s You can v iew networ k statis tics and perform va rious diagn ostic tes ts from the Diagnostics screen. S elect the icon for the stat istics you want to view or tests you want to perfor m.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 36 www .polycom .com Generate Tone Lets you generate a tone to test audio function s (see page 41). Network Statistics The Net work S tat isti cs screen present s the net work protoc ols and data spee ds for a video ca ll.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 37 Via Vide o User’ s Guid e Advanc ed Stati sti cs The Advanced Statist ics scr een shows de tailed info rmation abo ut the st atus of yo ur call . Transmi t and recei ve speed s are di splaye d for both a udio and v ideo dur ing a ca ll.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 38 www .polycom .com Call St atus The C all Status screen pr esents informat ion about t he calls y ou have place d. The info rmation in t he Call Status sc reen is not clear ed when you reset your syst em.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 39 Via Vide o User’ s Guid e Reset System The Reset Sy stem screen is used to clear user setti ngs and l ocal address book en tries. When re settin g the system , you can c hoose to clear your pe rsona l infor ma tio n (user setting s) and your lo cal a ddress book e ntries.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 40 www .polycom .com Resetting the syste m with D elete address book entries selecte d deletes a ll loca lly sto red ad dresse s, without af fectin g glob al address es.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 41 Via Vide o User’ s Guid e 3. Slide th e camera switc h back to the On positi on. Genera te T o ne The Generate Tone screen lets you gener ate a tone so you c an test the near and far s ite audio functions.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 42 www .polycom .com Setup You can view and c hange variou s config uration s ettings f rom the Setu p scree n. Selec t the icon for the c onfigu ration settings you want to view or c hange.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 43 Via Vide o User’ s Guid e H.323 Lets you see an d chan ge H.323, gate k eeper , dialing speed, an d QOS s ettings (see pa ge 51). Genera l The General Setup scre en prese nts basi c infor mation abo ut you r ViaVid eo setup.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 44 www .polycom .com Show Animations When Show Animations is sele cted, the scree n transition a nima tion s within ViaVideo’s infor m at ion scree ns are activ e .
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 45 Via Vide o User’ s Guid e Directory Ser vices The Directo ry Servic es screen l ets you spe cify up to five ILS serv ers. As par t of the sta ndard ins talla tion co nfigura tion, ViaVideo’s Glob al Addres s Book ( GAB) s er ver is selec ted for you.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 46 www .polycom .com Display Glo bal Addres ses Shows the address es of us ers reg istered with the ILS ser vers th at you have selected in your addres s book.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 47 Via Vide o User’ s Guid e Host Name This is the co mputer na me entere d in your Windows network configura tion s ettings. WINS R esolution Specif ies if Windows Inter net Naming Ser vic e (WINS) res olution is tur ned on or not.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 48 www .polycom .com Properties dialo g, where you can change your ne twork configura tion s etting s . Audi o The Audio screen lets you s et audio confi guratio n optio ns. ViaVideoUG.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 49 Via Vide o User’ s Guid e Mute Auto Answer Calls Mutes ou tgoing aud io for cal ls when Auto Answer Incoming Ca lls is sele cted. Headphones or Speaker s A cti va tes th e ViaVideo came ra unit’s inter nal micropho ne .
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 50 www .polycom .com Software The PC and V iaVideo soft ware selec tions in the Software screen allow you to view softwar e informa tion. This is useful when y ou are troubles hooting P C proble ms, or if y ou are ha ving troubl e with the ViaVid eo unit .
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 51 Via Vide o User’ s Guid e Y ou can ch ec k ViaVideo’s software upda te site for the la test version by clic king Check for New Software . If a n ew v ers ion of the software exists, y ou can d ownload it from this site.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 52 www .polycom .com QOS Lets you see and ch ange QOS, Netw or k Addres s T rans lato r , an d Fire w all settings (see page 56) . H.323 The H.323 scr een lets you configur e the H.
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 53 Via Vide o User’ s Guid e Multiple IP Addresses If you are usin g multi ple IP ad dresses, the Choose Other IP Address option a ppear s in the H.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 54 www .polycom .com Gateke eper Use the Gat ekeeper screen to esta blish conn ections with your network’s H.323 gatekeeper . Registering with a ga tek eeper le ts you make calls using gateways and some Multi-p oint Conferen cing Uni ts (MCUs).
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 55 Via Vide o User’ s Guid e Dialin g Speeds The Dialing Speeds screen lets you spec ify whic h line spee ds are availab le in the manual callin g scree n, and when creatin g loca l address book en tries.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 56 www .polycom .com W e recomme nd tha t you sele ct li ne speeds that you know your network can ha ndle . If you a re not su re whic h line speeds are be st, conta ct your network adminis trator .
Chapter 3 Syste m Infor matio n and Di agnostic s © Polyco m, Inc. 57 Via Vide o User’ s Guid e Auto disco ver NAT IP addres s Sele cting this opti on activate s ViaVideo’s auto matic e xter nal IP addres s featur e, which d iscov ers your NA T’s exter nal IP ad dress and automa ticall y enter s it in the NAT outside (WAN) address field.
Chapter 3 Syste m Infor matio n and Di agnostic s ViaVideo Use r’ s Guide 58 www .polycom .com ViaVideoUG.book Page 58 Thursday, December 7, 2000 2:49 PM.
© Polyco m, Inc. 59 Via Vide o User’ s Guid e A Audio Connection Beca use of the multiple possibi lities for audio connect ion wit h the ViaVid eo camer a unit, the follow ing infor mation is provi ded to hel p you cor rectly install your a udio conn ection.
Appen dix A Audio Con necti on ViaVideo Use r’ s Guide 60 www .polycom .com PC with Headphones This dia gra m shows the co r rect connec tion from the ViaVideo audio line out t o the P C line in when usin g headp hones.
Appen dix A Audio Con necti on © Polyco m, Inc. 61 Via Vide o User’ s Guid e Headphones Only This dia gra m shows the co r rect connec tion from the ViaVideo audio line out t o the P C line in when usin g headp hones.
Appen dix A Audio Con necti on ViaVideo Use r’ s Guide 62 www .polycom .com Headset with Attached Microphone This dia gra m shows the co r rect connec tion from the ViaVideo audio line out t o a head set with a ttac hed mi crophon e .
© Polyco m, Inc. 63 Via Vide o User’ s Guid e B Network Connection Although conne cting any network dev ice ca n be a con fusin g task, we at ViaVid eo are all for sim plifying thi ngs a bit.
Appen dix Network Connection ViaVideo Use r’ s Guide 64 www .polycom .com Router With NA T , No Firewall If your netwo rk conn ection is t hrough a ro uter with a Network Addres s Transl ator (NA T), but no firewa ll, use t he config uration instruc tions on pag e 65.
Appen dix Network Connection © Polyco m, Inc. 65 Via Vide o User’ s Guid e Through a Virtu al Private Network If your n etwork conn ection i s throug h a Virtual Privat e Network (VPN), use the conf igura tion ins truction s on page 70.
Appen dix Network Connection ViaVideo Use r’ s Guide 66 www .polycom .com 2. Select t he System is B ehind a NAT option. 3. Enter your NA T’s exter nal IP add ress in th e NAT Outside (WAN) Address field. Y ou c an enter th e address manual ly , or let ViaVi deo enter it automa tica lly by selec ting the Auto discover NAT IP Address option .
Appen dix Network Connection © Polyco m, Inc. 67 Via Vide o User’ s Guid e automa tica lly discov ers your e xter nal IP addres s and enter s it i n the NAT Outside (WAN) Addres s field. If you are us ing a pr o xy ser v er , the Auto discover NAT IP Address option may not wo rk cor rec tly .
Appen dix Network Connection ViaVideo Use r’ s Guide 68 www .polycom .com 1. Go to the Quality of Service and Firewall scre en ( Syste m Info>Setu p>H.32 3>QOS ). 2. Select t he Use Fix ed Ports option. 3. If you used the default po r t range when a ssigning th e por ts i n your firewall interf ace, y ou don’t need to change anything.
Appen dix Network Connection © Polyco m, Inc. 69 Via Vide o User’ s Guid e In addition to placing the P C ru nning ViaVideo in the DMZ, you also need to co nfigure your ViaVideo to r un behind a Ne.
Appen dix Network Connection ViaVideo Use r’ s Guide 70 www .polycom .com Through a Virtu al Private Network To conf igure your ViaVid eo to oper ate throu gh a Virtual Private Network ( VPN) you first ne ed to confi gure yo ur VPN (i n Windows’ Setting s>Control Panel> Network>C onfigura tion ).
Appen dix Network Connection © Polyco m, Inc. 71 Via Vide o User’ s Guid e If you want to cha nge IP add resses on ce ViaVi deo is al ready r unning, go to the H .323 screen ( System Info> Setup>H .323 Setup>H.3 23) and c lick Choose Other IP Address .
Appen dix Network Connection ViaVideo Use r’ s Guide 72 www .polycom .com ViaVideo presents the Multiple IP Addresses screen ., Chose the IP addres s of your VPN connecti on and re star t the applic ation. Once the ViaVideo a pplica tion r e-star ts, ViaVid eo uses the IP address you specifie d.
Appen dix Network Connection © Polyco m, Inc. 73 Via Vide o User’ s Guid e up a ba r rier to pac k et traf fic, l imiting outside access to your inte r nal network.
Appen dix Network Connection ViaVideo Use r’ s Guide 74 www .polycom .com unauthor ized access. The need for pr otection must be b alanced against the need to commun ica te with the outs ide worl d. This is why most security solut ions fo cus on mi nimi zing th e risk un til it reaches an accepta ble lev el.
Appen dix Network Connection © Polyco m, Inc. 75 Via Vide o User’ s Guid e What’ s a Network Address T ranslator? A NA T is a set of s er vi ces on the r outer tha t all ow you to opera te a loca.
Appen dix Network Connection ViaVideo Use r’ s Guide 76 www .polycom .com ViaVideoUG.book Page 76 Thursday, December 7, 2000 2:49 PM.
© Polyco m, Inc. 77 Via Vide o User’ s Guid e C T roubleshooting This a ppendix e xplains the most commo n proble ms and er ror message s you mig ht encounte r when usi ng ViaVideo , and expla ins how to cor rect them.
Appen dix C Troubleshooti ng ViaVideo Use r’ s Guide 78 www .polycom .com Audio T roubleshoo ting The fol lowing ta ble l ists aud io-relate d proble ms, t heir expl anations, and po ssible solution s. Proble m Explanat ion Solution No A udi o Y ou ma y not ha v e yo ur audio ho ok ed up c or rect ly .
Appen dix C Tr o u b l e s h o o t i n g © Polyco m, Inc. 79 Via Vide o User’ s Guid e Low A udio Audio lev els ar e not set correctly . 1. Chec k your soun d lev els in the Volume Controls (right-c lick the speaker icon in the Windo ws toolbar). C hec k Line In , Wave , and M aster Volume contro ls.
Appen dix C Troubleshooti ng ViaVideo Use r’ s Guide 80 www .polycom .com Video T roublesho oting The foll owing tabl e lists v ideo-rel ated probl ems, their ex planati ons, and sol ution s.
Appen dix C Tr o u b l e s h o o t i n g © Polyco m, Inc. 81 Via Vide o User’ s Guid e Video is out of focus. Either t he camera is out of focus, or there is not e nough light in the area a nd the camera ca nnot genera te a clear i mage . Use the focu s whee l ab ov e the camera lens to a djust foc us.
Appen dix C Troubleshooti ng ViaVideo Use r’ s Guide 82 www .polycom .com Error Messages The foll owing tabl es give c ommon e rror messa ges, thei r explanat ions, and solu tions. Installation Errors The foll owing tabl e lists install ation-rel ated err or mess ages, the ir explanat ions, and solu tions.
Appen dix C Tr o u b l e s h o o t i n g © Polyco m, Inc. 83 Via Vide o User’ s Guid e Ga tek eeper D iscov er y Re qui red Y ou m ust al low V iaVi deo to discov er the gatekeeper . Sele ct Auto on th e H.323 Gatekeep er setting ( System Info>S etup>H.
Appen dix C Troubleshooti ng ViaVideo Use r’ s Guide 84 www .polycom .com ViaVideoUG.book Page 84 Thursday, December 7, 2000 2:49 PM.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Polycom ViaVideo è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Polycom ViaVideo - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Polycom ViaVideo imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Polycom ViaVideo ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Polycom ViaVideo, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Polycom ViaVideo.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Polycom ViaVideo. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Polycom ViaVideo insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
