Manuale d’uso / di manutenzione del prodotto 8002 del fabbricante SpectraLink
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April 2008 Edition 1725-36034-001 Version B SpectraLink 8002 Wireless Telephone Administration Guide Session Initiation Protocol (SIP) VoIPon www.voipon.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 2 PN: 1725-36034-001_B.doc Trademark Information Polycom® and t he logo design s SpectraLink® LinkPlus Link NetLink SVP Are trademarks and registe red trademarks of Polycom, Inc.
PN: 1725-36034-001_B.doc 3 Essential Installation Pointers You must update the software with the most recent code. • Visit http://www.polycom.com/usa.en/support/voice /wi-fi/spectralink_8002_wireless.html . Additional information about updating handset code is in Chapter 3 Software License and Protocol Management .
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PN: 1725-36034-001_B.doc 5 About this Guide This document explains how to configure and maintain the SpectraLink 8002 Wireless Telephones with Session Initiation Protocol (SIP); a protocol for the control of voice over IP (VoIP) calls.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 6 PN: 1725-36034-001_B.doc Customer Support Hotline Polycom wants you to have a successful installation. If you have questions please contact our Customer Support Hotline at (800) 775-5330.
PN: 1725-36034-001_B.doc 7 Contents 0 About this Guide ...................................................................... 5 Polycom Model Numbers ..................................................................5 Related Documents ...............
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 8 PN: 1725-36034-001_B.doc Ring Options ................................................................................ 37 Phone Options ....................................
Contents PN: 1725-36034-001_B.doc 9 Syslog Mode .......................................................................................79 8 Certifying the Installa tion ........................................................ 83 Conducting a site survey .
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PN: 1725-36034-001_B.doc 11 SpectraLink Wireless Telephone Overview SpectraLink 8002 Wireless Telephones are mobile handsets for workplace IP telephone systems. The handsets o perate over an 802.11b wireless Ethernet LAN provid ing users a wireless voice over IP (VoIP) extension.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 12 PN: 1725-36034-001_B.doc WMM must be enabled when configuring access points for t he SpectraLink 8002 Wireless Telephones. The han dset will not work properly if WMM is not enabled.
SpectraLink 8002 Wireless Telephone Overview PN: 1725-36034-001_B.doc 13 Quick Start Guide 1. A wireless LAN must be properly configured and operational through the use of 802.11 wireless APs. Ensure WMM is enabled on the APs. 2. Configure a TFTP server on the LAN.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 14 PN: 1725-36034-001_B.doc System Diagram The following diagram shows the SpectraLink components residing on a network with APs and a wireless LAN Ethernet Switch.
SpectraLink 8002 Wireless Telephone Overview PN: 1725-36034-001_B.doc 15 System Components SpectraLink 8002 Wireless Telephone The SpectraLink 8002 Wireless Tele phone is a lightweight, durable handset specifically designed for mobile workplace use within a facility using SIP and an 802.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 16 PN: 1725-36034-001_B.doc the handsets must only use APs attac hed to a single subnet, or be powered off and back on to switch to a different subnet. SIP server The SIP server is a component from a third-party vendor that provides access to telephony services.
SpectraLink 8002 Wireless Telephone Overview PN: 1725-36034-001_B.doc 17 Handset Specifications SpectraLink 8002 Wireless Teleph one Radio frequency: 2.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 18 PN: 1725-36034-001_B.doc Startup Sequence The SpectraLink 8002 Wireless Telephone goes through an initialization sequence at startup. The line icons 1-9 display and count down as the handset ste ps through this sequence.
SpectraLink 8002 Wireless Telephone Overview PN: 1725-36034-001_B.doc 19 If the username and password have not been defi ned in the Admin menu, you will be prompted to enter both of these items before the extension number can display. The user name must correspond to a handset-specific configuration file.
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PN: 1725-36034-001_B.doc 21 SpectraLink 8002 Wireless Telephone Configuration Each SpectraLink 8002 handset may be configured for site-specific requirements by opening the Admin menu and selecting options or entering specific information. Any settings entered in the Admin menu must conform to system settings.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 22 PN: 1725-36034-001_B.doc The Admin (Administration) Menu The Admin menu contains configur ation options that are stored locally (on each handset).
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 23 Example: if the 2 key is repeatedly pressed, the handset will display 2 , A , B , and C , then a , b , and c . The following table shows which key will allow you to enter non- numeric characters or other characte rs not represented on the keypad.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 24 PN: 1725-36034-001_B.doc Admin menu Admin Menu Ite ms 2 nd Level 3 rd Level 4 th Level 5 th Level Phone Config License O.
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 25 Admin Menu Ite ms 2 nd Level 3 rd Level 4 th Level 5 th Level Reg. Domain None 01 02 04 05 06 Transmit Power *Maximum 50 .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 26 PN: 1725-36034-001_B.doc Phone Config License Option The License Option indicates the Vo IP protocol that your site is licensed to download and run. The SIP protocol used for the SpectraLink 8002 Wireless Telephones requires license option selection 22 .
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 27 handset display and take input from the handse t keypad. Refer to the OAI Specification documentation fo r information about administering the OAI Gateway and the serv ices it can provide.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 28 PN: 1725-36034-001_B.doc Dynamic Host Configuration Protocol (DHCP) is a standardized protocol that enables clients to b.
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 29 The TFTP server and the SIP TFTP server may be the same device with the same IP address or may be different de vices with different IP addresses. Default Gateway and Subnet Mask Used to identify subnets, when using a complex network, which includes routers.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 30 PN: 1725-36034-001_B.doc Domain Name System (DNS), an industry-standard protocol, locates computers on an IP-based network. IP networks rely on number- based addresses to move information on the network.
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 31 Security *NONE disabl es any 802.11 encryption or security authentication mechanisms. For WEP, WPA-PSK and WPA2-PSK set each of the following options to match exactly the settings in the APs.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 32 PN: 1725-36034-001_B.doc WPA2-PSK The security features of WPA2 (Wi-Fi Protected Access) using PSK are available and may be used if supported by the APs in the facility.
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 33 Preferred Channel The Preferred Channel option lists the channels that are per mitted within the regulatory domain previously set. To speed up handoff, the handset will look for APs on the preferred channel list first.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 34 PN: 1725-36034-001_B.doc User-defined Preferences (Standby Menu) The following user-defined preferences are also covered in the SpectraLink 8002 Wireless Telephone User Guide .
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 35 Standby menu Standby Menu Items 2 nd Le vel 3 rd Level 4 th Level Lock Keys Ring Options Telephone Ring Ring Cadence Off .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 36 PN: 1725-36034-001_B.doc Standby Menu Items 2 nd Le vel 3 rd Level 4 th Level Server IP Addr Firmware Version * Default setting. **Option appear s wh en Ring Ca dence and Vibrate Ca dence are both set to a value oth er than “Off”.
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 37 Lock Keys When enabled, the Keypad Lock option will lock the keypad immediately. If the keypad is locked, it may be unlocked by the end user pressing the Unlk softkey and then the # key.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 38 PN: 1725-36034-001_B.doc Ring Delay Ring Delay determines how long the vibrate cadence will play before the audible ring starts. If Ring Cadence and Vibrate Cadence are turned off, the Ring De lay option will not appear on the menu.
SpectraLink 8002 Wireless Te lephone Configuration PN: 1725-36034-001_B.doc 39 disabled (the default) or adjusted for a 5, 10 or 20-second delay before locking. System Info Phone IP Addr Displays the IP address currently assigned to the handse t. Server IP Addr Displays the IP address of the Spec traLink OAI Server (if installed).
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PN: 1725-36034-001_B.doc 41 Software License and Protocol Management All SpectraLink 8002 Wireless Teleph ones are shipped from Polycom with SIP software already installed. You may need to downl oad and install updates per the following in structions.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 42 PN: 1725-36034-001_B.doc Configuration Process 1. Download the latest SpectraLink 8002 Wireless Telephone software from http://www.polycom.com/usa.en/support/voice/wi- fi/spectralink_8002_wireless.
Software License and Protocol Management PN: 1725-36034-001_B.doc 43 6. During the second download evolution, the handset receives code from the TFTP server for system configuration and for its own settings. Once this second evolution is complete, the handset is ready to use.
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PN: 1725-36034-001_B.doc 45 Programming the SIP Handset Features In order for the handset to function in the SIP environment, it downloads two files from the root directory of the SIP TFTP server during startup. The first file contains generic system information and is downloaded by every handset during the power-up sequence.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 46 PN: 1725-36034-001_B.doc • Username requirements are: alphanumeric, no spaces, no punctuation, case is ignored, 1-16 characters. • The generic file should contain proxy server information and other SIP system data.
Programming the SIP Handset Features PN: 1725-36034-001_B.doc 47 Proxy server commands Use the following parameters when programming the configuration files. See the sample configuration files following this table for more detailed information. Parameter Value Description Notes PROXYn_ADDR xxx.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 48 PN: 1725-36034-001_B.doc Parameter Value Description Notes *default 3600 seconds messages.
Programming the SIP Handset Features PN: 1725-36034-001_B.doc 49 Parameter Value Description Notes sip:name@domain Domain where the mail resides. PROXYn _MAIL_NOTIFY name@xxx.xxx.x xx. xxx or Contact fr om whom mail notification originates. See config file example for more information.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 50 PN: 1725-36034-001_B.doc Parameter Value Description Notes FAVORITE Dialstring;identifier Phonebook list of numbers accessible from the Favorites menu. Favorites in the allusers file will be present in the Favorites on all handsets.
Programming the SIP Handset Features PN: 1725-36034-001_B.doc 51 Sample Configuration Files Configuration files are illustrated belo w. These files are available as a download from the software update s site and may be customized for your application.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 52 PN: 1725-36034-001_B.doc # PROXYn_MA IL_NOTIFY is from whom w e might get u nsolicited ma il center # notificat ions # This opti on is deprec ated and no longer needed in versions beyond # e/h340/i640 phones v108.
Programming the SIP Handset Features PN: 1725-36034-001_B.doc 53 # Linux, the OS runnin g Asterisk, has a ARP Cac he flushing mecha nism. This # feature serves to re fresh the AR P Cache for t he 8002 phone s. For 8020 and # 8030 pho nes, the ARP Cache is re freshed by th e SVP server.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 54 PN: 1725-36034-001_B.doc Sample handset-specific file # Configura tion file fo rmat example # Codec pre ference orde r only. Thi s does not en able/disable codecs. # (Optional ) can be G.
Programming the SIP Handset Features PN: 1725-36034-001_B.doc 55 # press eve nts. Normall y you want t his to be dis abled for Ast erisk but it # depends o n your confi guration and what you wan t to be able to do.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 56 PN: 1725-36034-001_B.doc LINE2_CALLI D = Brady, Marsha LINE3 = 3002 LINE3_PROXY = 1 LINE3_CALLI D = Drew, N ancy #LINE4 = 804 #LINE4_PROX Y = 3 #LINE4_CALL ID = Sip Us er 4 #LINE5 = 1014 #LINE5_PROX Y = 2 #LINE5_CALL ID = Sip Us er 5 # Favorite Dial ed Number list.
PN: 1725-36034-001_B.doc 57 Using the SIP Handset The Handset Display Overview When active, the handset screen has six rows that display information in this format: Row # Information prov ided 1 Icons.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 58 PN: 1725-36034-001_B.doc associated with the line is displayed on the hand set by pressing the LINE key.
Using the SIP Handset PN: 1725-36034-001_B.doc 59 Download Indicates that the handset is checking for or downloading code. This icon only appears while the handset is running the over-the-air downloader. It appears to the right of the signal-strength icon in the same location as the voicemail icon.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 60 PN: 1725-36034-001_B.doc The active modes utilize the most bandwidth and battery power. To conserve these resources, return the handset to the standby mode when a call is completed by pressing the End Call key.
Using the SIP Handset PN: 1725-36034-001_B.doc 61 Softkey Name Displayed… Press to… Fwd Forward Definition Prior to entering the first character of a dial number. Delete a previously defined forward destination. Or initiate definition of a new forward destination.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 62 PN: 1725-36034-001_B.doc Menus Line menu The Line menu allows you to activate a call on a selected line or to view the status of lines. View the five line appearances by pressing the LINE key.
Using the SIP Handset PN: 1725-36034-001_B.doc 63 destination information before sending the call to the PBX to activate the feature, you can create a Favorite with the access code only.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 64 PN: 1725-36034-001_B.doc Handset Operation Alphanumeric dialing During dialing the carat ( ^ ) indicates the insertion point for the next character. Up to 80 characters may be entered wi th automatic scrolling.
Using the SIP Handset PN: 1725-36034-001_B.doc 65 If you want to… Then… Place a call 1 Press the START key and wait for a dial tone. 2 Dial the numbers and press START .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 66 PN: 1725-36034-001_B.doc If you want to… Then… Place a call from Favorites menu 12 Press START . 13 Listen for dial tone. 14 Press Favr softkey. 15 Use the side buttons to find and select desired entry.
Using the SIP Handset PN: 1725-36034-001_B.doc 67 If you want to… Then… Place a call on hold Press the Hold softkey. When a call is placed on hold, an equal character (=) replaces the a sterisk (*) and the Rsme softkey replaces the Hold softkey. Press Rsme to return to the call.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 68 PN: 1725-36034-001_B.doc If you want to… Then… Transfer a call (blind) 22 While in a call, press FCN and then select Transfer (or press the shortcut key 1 ). (The current call will be placed on hold].
Using the SIP Handset PN: 1725-36034-001_B.doc 69 If you want to… Then… Listen to voicemail When any proxy has outstanding message s, the voicemail icon will display. The LINE menu will disp lay a plus (+) indication when there is a new voicemail for that line.
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PN: 1725-36034-001_B.doc 71 Testing a Handset Verify proper registration and operation of each handset b y performing the following tests on each handset in an active wireless area. 1. Power on the handset by pressing t he END key. A series of messages will be displayed as the h andset acquires the system.
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PN: 1725-36034-001_B.doc 73 Diagnostic Tools Run Site Survey , Diagnostics Mod e and Syslog Mode are three diagnostic tools provided to assist the WLAN administrator in evaluating the functioning of the handset and the s ystem surrounding it. Diagnostic tools are enabled in the Admin menu.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 74 PN: 1725-36034-001_B.doc A n y D e t l Where: • 111111 = The last three octets of the on-air MAC address for a discovered AP. • 22 = The signal strength for the specified AP.
Diagnostic Tools PN: 1725-36034-001_B.doc 75 i : b bb bbb s n c h b c n e e e ee eeeeee DGHI r r r rr rrrrrrr r +xx x x m m m G: gggg P: p p p p A n y S m r y Where: • i = index of selected AP (valu.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 76 PN: 1725-36034-001_B.doc Solving coverage issues Coverage issues are best resolved by adding and/or relocating APs. Overlap issues may be resolved by reassigning channels to the APs or by relocating the APs.
Diagnostic Tools PN: 1725-36034-001_B.doc 77 The screens provided by the Diagnostics Mode include: Screen 1 M i s s edRc v C nt nnnnn M i s s edX mt C nt nnnnn R x R e t r y C ou nt nnnnn T x R e t r .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 78 PN: 1725-36034-001_B.doc Screen 3 contains a list of the APs that are heard and the following parameters from each AP: • Indicator as to whether this is th e current AP, or an index into the list of other APs heard (C indicates current).
Diagnostic Tools PN: 1725-36034-001_B.doc 79 • Association failures since power up (AssocFailure) • Re-association failures since power up (ReAssocFail) Screen 5 S e c - Er r Cou nt nnnnn L s t S .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 80 PN: 1725-36034-001_B.doc The table below lists the syslog messages and which level of logging will produce them: Message.
Diagnostic Tools PN: 1725-36034-001_B.doc 81 Call Start Call type (telephony, OAI, PTT) AP MAC AP signal strength Call End AP MAC AP signal strength Audio stats AP MAC AP signal strength Payload size .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 82 PN: 1725-36034-001_B.doc Messages are formatted like the following example: Jan 1 00:01 :26.72 0090. 7a02.2a1b (1 72.16.0.46) [ 001a] RStat: AP 0 0:40:96:48:1 D:0C (-56 dB m), Sent 7835 23, Recvd 79134 2, MSnt 245, MRcd 5674, BSnt 43, BRcd 10783, TX drop 43 (0.
PN: 1725-36034-001_B.doc 83 Certifying the Installation Prior to determining that an installation is complete, test the handsets following the sequence given in Chapter 6 Testing a Handset and conduct a Site Survey mode test according to the directions given in Chapter 7 Diagnostic Tools .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 84 PN: 1725-36034-001_B.doc be at least one AP stronger than -60 dBm in all a reas for 11mb/s operation) and has good channel allocation. (At any point, the strongest AP shown should be on a different channel than t he next best choice.
PN: 1725-36034-001_B.doc 85 Software Maintenance SpectraLink 8002 Wireless Telephones use proprietary software programs written and maintained by Polycom Corporation. The software versions that are running on the hand sets can be displayed during power on by holding down the END key.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 86 PN: 1725-36034-001_B.doc Message Description Updating Code Handset is downloading new software into memory. The number icon s at the bottom of the display indicate whi ch file number is currently being downl oaded.
PN: 1725-36034-001_B.doc 87 Troubleshooting On occasion, you may run into transmission problems due to any number of factors originating fr om the wireless LAN. SpectraLink 8002 Wireless Telephones can ex hibit transmissi on problems in several ways. They can cease fu nctioning properly, display error messages, or display incorrect data .
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 88 PN: 1725-36034-001_B.doc Transmission obstructions Prior to system installation, the best location for APs for optimum transmission coverage should have been determined.
Troubleshooting PN: 1725-36034-001_B.doc 89 Handset Status Messages SpectraLink Wireless Telephone status messages provide information about the SpectraLink 8002 Wireless Telephone’s communication with the AP and host telephone system. T he following table summarizes, in alphabetical order, the status messages.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 90 PN: 1725-36034-001_B.doc Message Descripti on Action Bad Network IP The value of the Network IP address entered in the W.
Troubleshooting PN: 1725-36034-001_B.doc 91 Message Descripti on Action Checking DHCP IP The handset is retrieving DHCP information from the DHCP server. None. This is informational only. CRC Code Error The software which has b een TFTP downloaded has a bad redund ancy code check.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 92 PN: 1725-36034-001_B.doc Message Descripti on Action DO NOT POWER OFF The handset is in a critical section of the software update. None. Do not remove the Battery Pack or attempt to power off the phone while this is displayed.
Troubleshooting PN: 1725-36034-001_B.doc 93 Message Descripti on Action No Host IP (Addr) The handset is configured for “static IP” (as oppose d to “use DHCP ”) and no valid host IP address (the handset’s IP address) has b een entered. Enter a valid IP address in the configuration settings or change to “use DHCP.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 94 PN: 1725-36034-001_B.doc Message Descripti on Action Not Installed! A required software component is missing. Check that all required software files are on the TFTP server, if over-the-air downloading is being u sed.
Troubleshooting PN: 1725-36034-001_B.doc 95 Message Descripti on Action Updating Code… Handset is downloading new software into memory. The number icons at the bottom of the di splay indicate which file number is currently being download ed. This message also displays a progress bar.
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PN: 1725-36034-001_B.doc 97 Appendix A: Regulatory Domains This table details the specifications for regulatory domain settings. Polycom recommends that you check with local authorities for the latest status of their national regulations for 2.4 GHz wireless LANs.
SpectraLink 8002 Wireless Telephones Conf iguration and Administration (SIP) 98 PN: 1725-36034-001_B.doc VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299.
PN: 1725-36034-001_B.doc 99 Index A Access point Coverage ............................................................. 76 Coverage test ...................................................... 83 Access point, description ..............................
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 SpectraLink 8002 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 SpectraLink 8002 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso SpectraLink 8002 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul SpectraLink 8002 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il SpectraLink 8002, 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 SpectraLink 8002.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il SpectraLink 8002. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo SpectraLink 8002 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.