Manuale d’uso / di manutenzione del prodotto 5881 del fabbricante Siemens
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Part No. 107-5883-001 SIEMENS Business Class 5881 Broadband Internet Router User’s Guide.
Software License and Limited Warranty Copyright© 2005 Siemens Home and Of fice Communications Devices LL C. All rights reserved. Sie mens and the Siemens logo are trade marks of Siemens AG, Germany. All other trademarks are held by their respective companie s.
liable for any other losses or damages. • The end user will be billed for any parts or labor charges not covered by this limited warranty. The end user will be responsi ble for any expenses relat ed to reinstallation of the product . • THIS LIMITED WARRENTY IS THE ONLY WARRENT Y SSN MAKES FOR THE PRODUCT AND SOFTWARE.
SIEMENS 5881 Broadband Intern et Router User’s Guide SIEMENS i T able of Content s Chapter 1 Product Specif ications Front Panel ................ ............. ................ ............. ............. ................ ............. .............
SIEMENS 5881 Broadband Intern et Router User’s Guide SIEMENS ii Chapter 4 User Setup User Management .................. ................ ............. ................ ............. ................ ............. ....... ................... ........
SIEMENS 5881 Broadband Intern et Router User’s Guide SIEMENS iii VPN Log On . ............. ............. ................ ............. ................ ............. ............. ................ ... ....................... ......... 74 Chapter 7 Monitoring Router System Summary .
SIEMENS 1 Chapter 1 Product S pecifications Front Panel The following table explains the LEDs that appear on the Fron t Panel of the Siemens 5881 router . Light Color Indicat ions PWR Green (ste ady) Off Y ellow (steady) Y ellow (blinking) Green: (2 sec.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 1 Produc t Specifications Back Panel SIEMENS 2 Back Panel The following table descrcibes the various connections on the back p anel of the Siemens 588 1 router . Connection Function Power Switch Enables and disables power to th e system.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 1 Produc t Specifications Hardware Speci fications SIEMENS 3 Hardware Specifications Physical Specifications • Unit Dimensions: – 8.4W x 7D x 1.7H inches – 21.3W x 17.8D x 4.3H cm • Wei g ht : –1 .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 1 Produc t Specifications Sof tware Specificatio ns SIEMENS 4 Sof tware S pecifications Bridging • T ranspa rent bridging including S panning T ree protocol (IEEE 802.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 1 Produc t Specifications Sof tware Specificatio ns SIEMENS 5 Security • Role-based manageme nt • User authentication (P AP/CHAP) wit.
SIEMENS 6 Chapter 2 Inst allation This chapter descr ibes the steps you must take to inst all and conf igure the various co mponents in your network to utilize the Siem ens Ethernet Security Router .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation Hardware In stallation SIEMENS 7 Hardware Inst allation Y ou may position the Siemens broadband router at any convenient location where it will be we ll ventilated. Do not stack it with other device s or place it on the ca rpet.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 8 PC Configuration Y our PC must be configured to use the TCP/IP protocol suite over the In tern et, and to accept Dynamic Host Configuration Protocol address assign me nts from th e router .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 9 Windows NT 4 1. On your desktop, rig ht click on th e Network Neighborhood icon. This displays the Network window . 2. Click the Protocols tab. 3.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 10 Windows 2000 1. Select St art >Set tings >C ontrol Pa nel . This displays the Co ntrol Panel w indow . 2. Double-click the Network and Dial-up Connection icon.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 11 Windows XP 1. Click St art >Control Pane l. This displays the Control Panel window . 2. Double-click the Network Conn ections icon. This displays the Network Connection windo w .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 12 Mac OS 9.x 1. Click Apple -> Control Panels -> TCP/IP . This displays the TCP/IP Control Panel window . 2. Select Ethernet from the Connect via drop-down menu.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 13 Mac OSX 1. Click Apple -> System Preferences . This displays the Syst em Preferences window . 2. Double-click the Network icon under the Internet & Network section.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation PC Configuration SIEMENS 14 Linux 1. From a term inal window , run linuxconfig . This displays the Config window . 2. Click the Adaptor ta b . 3. Enter any information specified by your service provider in the fields un der the appropriate Adapte r tab.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation Configuring the Router SIEMENS 15 Configuring the Router The Siemens Business Class Router family of produc ts provides two user interfaces: a W eb Management Interface and a console- based Command Line Interface (CLI).
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 2 Installation Configuring the Router SIEMENS 16 Router Information Page The Router Information Pag e is the first page you encounter af ter logging into the router . The Router Information p age displays basic rou ter information an d configuration settin gs.
SIEMENS 17 Chapter 3 Easy Setup This chapter descr ibes how to define router config uration settings using the Easy Setup Wizard. These settings control access to the Wide Area Network (W AN ) and Local Area Network (LAN).
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 3 Easy Setup Select Protocol SIEMENS 18 Using PPPoE If you will use the Point-to-Point Protocol (PPP) to establi sh the connection., you selected Using PPPoE . Perform the following steps to co mplete setting up the router .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 3 Easy Setup Select Protocol SIEMENS 19 Dynamic Host Conf iguration Protocol Dynamic Host Configuration Protocol (DHCP) provides a dynamic, “upon re quest,” IP address to computers and other networked devices.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 3 Easy Setup Select Protocol SIEMENS 20 3. Click Next . Th is displays the Trusted Interface Configu ration page. 4. Enter the IP Address and Subnet Mask of the router . The IP addr ess must be unique un less Networ k Address T ranslatio n (NA T) is enabled.
SIEMENS 21 Chapter 4 User Setup This chapter describes how to set up users on the router and contro l their access to router functions and to the Internet. T he featur es that cont rol users and their a ccess are listed below . T o access one of these options, click the link o n the left navigat ion pane of the Router Info rmation page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 22 Adding/Modifying A User Account User accounts are used to contr ol access to the router and the Internet. T o add a user account: 1. Click New User on the User Management page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 23 Deleting A User Account T o delete a user account: 1. Select the name of the accoun t you want to delete in the Select User list on the User Manage ment p age, then click Delete User .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 24 User Lookup User authentication verification is performed when an access request is made to the system.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 25 Secure Mode Configuration Y ou can enable secure mode to control whether an interface is trusted or untrusted. T o configure Secure Mode: 1. Click Secure Mode Configuration on the left navigation p ane of the User Management p age.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 26 Configure the Radius Server Remote Authentication Dial In User Se rvice (RADIUS) is client-server bas e d access control and authentication feature.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 27 Configure the T acPlus Server T acplus allows access control and user authentication to be managed from a remote server .T o configure the T a cplus Server: 1.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup User Managem ent SIEMENS 28 Management Classes All system operations, are p artitioned into functiona l groups called m anagemen t classes . Managem ent classes group functions into the following categ ories.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup Change Password SIEMENS 29 Change Password User passwords a re changed from the Change Passwo rd page. T o change a user password: 1. Click Change Password from the left navigation pa ne on the Router Informa tion page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 4 User Setup Access Control SIEMENS 30 Access Control Restrict adminis trative control of the router to a specific set of IP addresses. Eac h remote access method (T elnet, Web, and SNMP) can be configured separ ately .
SIEMENS 31 Chapter 5 Advanced Setup This chapter d escribes how to configure a dvanced featur e s on the router . Advanced features are listed b elow . T o configure o ne of thes e featur es, click the lin k on th e left navigation pane of the Router Information p age.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup DMZ SIEMENS 32 DMZ One computer on your local network can be configured to allow unrestricted two-way communication with servers or individual users on the Internet. This provid es the ability to run programs that are incompatible with firewalls.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup DMZ SIEMENS 33 6. T o change the server status, se lect Enable or Disable from LAN DHCP Server S t atus .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup Router Clock SIEMENS 34 Router Clock Use the Router Clock option to se t the date and time on the router . T o set the current date and time on the router: 1. Click Router Clock on the left navigation p ane of the Router Information p age.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup DHCP SIEMENS 35 DHCP Dynamic Host Configuration Protoc ol (DHCP) is a communication prot ocol that allocates IP addres s automatically to any DHCP client request ing an IP address.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup DHCP SIEMENS 36 address range of the IP address pool, en ter the starti ng address in First IP Addr ess and the ending address in Last IP Addres s.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup QoS SIEMENS 37 QoS Quality of Service act ively manages network resources to sustain servic e levels for priority applications. Mission-critical and real-time Inte rnet applications dem and a network that provides high bandwid th and low latency .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup QoS SIEMENS 38 • Priority . Priority determines the order in whic h packets will be processed by the router . • Weight . W eight deter mines the amount of b andwidth to be allocated to a given ap plication.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup QoS SIEMENS 39 Configure QoS Policy QoS policies control how QoS manages network resources. T o configure a QoS policy: 1. Click QoS Policy Page from the left navigation pane of the QoS Configuration p age.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup QoS SIEMENS 40 5. In Source IP , select one of the following: • From/T o : Enables source address checking. S pecify the source IP ad dress or range of IP addresses that must match for this policy to be used.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup QoS SIEMENS 41 Reorder QoS Policies T o move a QoS policy: 1. On the QoS Policy Setting p age, select the policy you wa nt to move in the IP Policy List drop- down menu and click Move .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup Routing T able Configu ration SIEMENS 42 Routing T able Configuration Every host has a default routing t able that it uses to determ ine which physical interface address to use for outgoing IP traf fic.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup Dial Backup SIEMENS 43 Dial Backup Dial Backup provides a backup to the Internet throug h an asynchr onous modem connection when the defa ult W AN link service experience s interruption.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup Switch Managem ent SIEMENS 44 Switch Management Each router provides four or eight Ether net 10/100 s witching port s for connection to the local area network (LAN).
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup Switch Managem ent SIEMENS 45 Switch Age Time The Switch Age T ime specifies the aging time of the s witch. When the age time expires, the port MAC address entry is removed from the t able cont aining this information.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup Command Line Interface SIEMENS 46 Command Line Interface Use the Command Line Interfac e option to use the web interfac e to enter CLI commands. (Refer to the Command Line Interface Guide for available commands.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 5 Advanced Setup File Editor SIEMENS 47 File Editor Use the File Editor to create and edit files stored on the router . These files contain configuration and othe r data used by the ro uter .
SIEMENS 48 Chapter 6 Security Setup This chapter descr ibes how to configu re security feature s on the router . Security features a re listed below . T o configure one of these featur es, clic k the link on the left navigat ion pane of the Router In formation page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup NA T SIEMENS 49 NA T Network Address T ranslation (NA T) provides a leve l of secu rity by hi ding the private IP addresses of your LAN behind the single public IP address of your router .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup NA T SIEMENS 50 Configure the NA T Server T o configure NA T for inbound traf fic: 1. Click NA T Server on the left navigation pane . This displays the NA T Server Settings page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup NA T SIEMENS 51 Configure Host Mapping T o configure the mapping between private IP addresses and public IP addresses: 1. Click NA T Host Mapping on the left naviga tion pane.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup SNMP SIEMENS 52 SNMP Simple Network Management Protocol (SNMP) exchanges messages between a manageme nt client and a management agent.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup SNMP SIEMENS 53 SNMP IP Filter Activating an IP Filter range will lim it SNMP requests to only those that originate fr om the designated addresses or LAN. T o activate IP filtering: 1.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup Secure Shell SIEMENS 54 Secure Shell Secure Shell (SSH) secures network services over an insecure network such as the public Internet. The objective of SSH is to make a secu re functional equivalent for telnet.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup Secure Shell SIEMENS 55 Configure SSH T o configure Secure Shell settings: 1. Click Configure SSH from the Secure Shell (SSH) Configuration List p age. This displays the Configure Secure Shell (SSH) page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup Secure Shell SIEMENS 56 Load Keys Diffie -Hellman is the key exchange system used for authentication in the establishment and maintenance of SSH connections. The key exchange requir es a Public Key and a Private Key .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup Secure Shell SIEMENS 57 Key Generator Diffie -Hellman is the key exchange system used for authentication in the establishment and maintenance of SSH connectio ns. The Key exchange r e quires a Public key and a Private key .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup Firewall Scri pts SIEMENS 58 Firewall Script s A firewall is any combination of ha rdware and softwar e that secures a network and traf fic to prevent interception or intr usion.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup St at eful Firewall SIEMENS 59 S t ateful Firewall S t ateful Firewall var ies from the IP Filtering Firewall in that it gathers and maintains state information abo ut each session.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup St at eful Firewall SIEMENS 60 Configure St ateful Firewall T o configure the S tateful Fir ewall: 1. Click St ateful Firewall fr om the left navigation p ane of the Router Information pag e.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup St at eful Firewall SIEMENS 61 View Dropped Packet s T o view the most recent dropped packet s: 1. Click Dropped Packe ts from the left n avigation pane of the S t ateful Firewall Conf iguration page.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup St at eful Firewall SIEMENS 62 Configure Firewall Rules T o configure firewall rules: 1. Click Firewall Rules from the left navigation p ane of the S t atef ul Firewall Configuratio n pa ge.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup St at eful Firewall SIEMENS 63 4. For Ta r g e t , select one of the following to specify the charac teristics a p acket must have in order to matc h the firewall rule: • Protocol/Port S pecifies the protoc ol or port t hat applies to the rule.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup St at eful Firewall SIEMENS 64 Delete Firewall Rules T o delete firewall rules: 1. Click Firewall Rules from the left navigation p ane of the S t atef ul Firewall Configuratio n pa ge.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 65 IKE/IPSec Configuration IKE/IPSec (Internet Key Exchange/Internet Protocol Secu rity) prov ides authentication and encryption of IP traffic for the au thenticity , integrity and privacy of your communications.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 66 Easy IKE/IPSec Setup Internet Key Exchange (IKE) is a means of dynamically creating IP Security (IPSec) connections. IPSe c uses encryption and authentication to virtual priva te networks over an insecure n etwor k.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 67 Advanced IKE/IPSec Setup The Advanced IKE/IPSec Setup p age present s informat ion about current IKE a nd IPSec peers, policies and proposals.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 68 IKE Peers Definition IKE peers are those devices known to your internal mod e m as capable of p articipatin g in IKE connections. T o define a new IKE Peer: 1.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 69 IKE Proposals Definition IKE I proposals specify how packets will be encrypted/aut henticated for Phase I. T o define a new IKE proposal: 1.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 70 IKE IPSec Proposals Definition IKE IPSec Proposals specify how p acket s will be encrypted/authen ticated for the final SA. T o define a new IKE IPSec proposal: 1.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 71 5. From th e ESP Encryption Scheme drop-down menu, select one of the followin g to specify the algorith m to use to encrypt ESP IPSec packets: • NONE : No ESP encapsulation and no encryption is used.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 72 IKE IPSec Policies Definition IPSec policies are criteria for pa ckets that IPSec will recognize, an d actions that IPSec will take upon recognition.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup IKE/IPSec Configuration SIEMENS 73 10. In Destination Subnet Mas k , enter the subnet mask of th e remote private network to which your router will connect using this policy .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 6 Security Setup VPN Log On SIEMENS 74 VPN Log On VPN Log On start s an IPSec se ssion. IPSec sessions are initiated through Security Ass.
SIEMENS 75 Chapter 7 Monitoring Router This chapter describes how to monitor the health of your router co nnections. Router health can be monitored using the following functions. System Summary T o view system summary information, click System Summary on the left navigation pane of the Router Information page .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 7 Monitoring Rou ter System Summary SIEMENS 76 Ethernet Interface Information Click Ethernet Info on th e left navigation pane of the System Summary page to display inform ation abou t the Ethernet interface.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 7 Monitoring Rou ter System Summary SIEMENS 77 IP Routing Information Click IP Routing Info on the left navigation pane of the System Summary page to disp lay information about the active interfaces in the IP routing t able.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 7 Monitoring Rou ter Diagnostics SIEMENS 78 Diagnostics The Diagnostic feature provides info rmation about var ious component s of your system that might help in diagnosing a problem. T o run diagnostics, click Diagnostics on the lef t navigation p ane of the Router Information page .
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 7 Monitoring Rou ter Diagnostics SIEMENS 79 Interface Information Select Interface information from the dro p down menu and click Execute to display interface information.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 7 Monitoring Rou ter Diagnostics SIEMENS 80 Files Information Select Files information from the drop down menu and click Execute to display files store on the router . Memory Usage Select Memory usage from the dr op down menu and click Execute to display memory usage information.
SIEMENS 5881 Broadband Intern et Router User’s Guide Chapter 7 Monitoring Rou ter Diagnostics SIEMENS 81 List All Configuration Dat a Select List all configur ation dat a from the drop down menu an d click Execute to d isplay configuration information.
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 Siemens 5881 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 Siemens 5881 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Siemens 5881 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Siemens 5881 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Siemens 5881, 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 Siemens 5881.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Siemens 5881. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Siemens 5881 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.
