Instruction/ maintenance manual of the product TS 2/4 Digi
Go to page of 104
9200030 7_B Digi One/ PortServe r TS 2/4 Configuration and A dministration Guid e.
The Digi logo is a trademark of Digi International. All other brand and product names are trademarks of their respective holders. © Digi Inte rnational I nc.
i Cont ents Chapter 1 Intr oduc tion Setup Overview .................................................................................................... 1-2 About This Guide .............................................................................
ii Chapter 8 Configuring PPP Configuring PPP Connections: Web Interface ..................................................... 8-2 Configuring Inbound PPP Connections: C ommand Line .................................... 8-3 Configuring Outbound PPP Connections: Command Line .
iii Chapter 17 Configuration Exampl es Terminal Server Configuration Without RealPort ............................................. 17-2 Terminal Server Configuration Using Autoconnection ..................................... 17-3 Terminal Server Configuration Using RealPort .
iv.
Introductio n 1-1 Chapter 1 Int roduct ion In This Chapter This chapter provides a brief introduction on setting up yo ur Digi device. It discusses the follow ing topics: • Setup Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
1-2 Setup Overview Setup Overview This section provides an overview of the s etup process. Step A: Plan Before beginning setup, consid er the following: • How to assign an IP addres s to the Digi device’ s Ethern et interface, which can be accomplished in a number o f ways.
Introductio n 1-3 About This G uide Purpose This guide provides the foll owing: • Con figu rat ion a nd ad mini str atio n pr oced ures • Config uration exampl es Audience This manual is intended for the pers on responsible f or configuring and administering Digi One/PortServer T S 2/4.
1-4 Other Documents in the Li brary Other Documents in the Li brary Here is a list of the othe r documents in the library: Access Resource CD Card This card pro vides i nformation on the conten ts of the Access Resource CD. It includes the CD mounting ins tructions required to access the CD on many Unix systems.
Introductio n 1-5 About Configur ation Methods Use this sectio n to learn about co nfiguration methods. Configuring t he Digi One/PortServer TS 2/ 4 from an Attached T erminal W ith this method, you cable a terminal or PC running terminal emulation software to a Digi One/PortServer TS 2/ 4 port and then use the command line to enter commands.
1-6 Configura tion Prereq uisites Configuration Pr erequisites Accessing the Command Line from a Loc ally-Connected Terminal Use this pro cedure to access the co mmand line and the configura tion from a terminal connected to one of the Digi On e/PortServer TS 2/4’ s serial ports.
Configur ing the IP Address 2-1 Chapt er 2 Conf igurin g the IP A ddress In This Chapter This chapter discusses how to configure Digi One/PortServer TS 2/4’ s IP address and other features associated with its Ethernet interface. It discusses the following topics: • Options for Configu ring the IP Address and Mask .
2-2 Options for C onfiguring the IP Address an d Mask Options for Configuring the IP Addr ess and Mask Options The Digi O ne/PortServer TS 2/ 4 IP address can be confi gured using the followin g metho.
Configur ing the IP Address 2-3 Configuring the Ethernet In terface with DP A-Remote Use this sectio n to configure an initial IP address , subnet m ask, and default gatew ay using DP A- Remote. This procedure cannot be used to change the IP address, but only to assign the initial IP address.
2-4 Configuring the IP Address Usi ng Ping-ARP Configuring the IP Address Using Ping-ARP Use this section t o configure an I P address by manually updati ng a serve r ’s ARP table a nd then ping ing th e D igi devi ce. Starting Point This proced ure assumes the follo wing: • That your Digi device supp orts this feature.
Configur ing the IP Address 2-5 Configuring the Ethernet In terface from the Comma nd Line This section discusses how u se the command line to configu re an IP address, mask, and def ault gateway for Digi One/PortServer TS 2/4’ s Ethernet interface.
2-6 Configuring a n IP Add ress using DHCP and RARP.
Configuring Ports for RealPort 3-1 Chapter 3 Confi guring Ports f or Re alPort In This Chapter This chapter describes how to configure Dig One/PortServer TS 2/4 for RealPort conn ections. It discusses the follo wing topics: • About RealPort . . . . .
3-2 About RealPort About RealPort This section provides a brief introdu ction to RealPort. What is RealPort ? RealPo rt is a feature that allows network-based h ost systems t o use the po rts of the D ig One/PortSe rver TS 2/4 as thou gh they were the host system’ s own ports, appearing and beh aving a s local ports to the network-b ased host.
Configuring Ports for RealPort 3-3 Configuring Ports: Web Interface Use this pro cedure to configure a port fro m the web interface. 1. Access the web interface by enter ing the Dig One/PortServer TS 2/4 IP address in a bro wser ’ s URL window . 2. Log in to the Dig One/Po rtServer TS 2/4 as root.
3-4 Configur ing Ports f or RealPort: Command Line Configuring Ports for RealPo rt: Command L ine This section descr ibes how to configur e RealPort ports from the comman d line. Procedure Use this procedure to u se the command line to co nfigure Dig O ne/PortServer TS 2/4 for RealPo rt.
Configuring Ports for Pr inters 4-1 Chapter 4 Configuring Ports for Printers In This Chapter This chapt er describes how to confi gure Dig One/P ortServer TS 2/4 ports for p rinter connection s. It discusses the follo wing topics: • Configuration Considerations .
4-2 Conf iguration Co nsidera tions Configuration Consid erations Y ou should be aware of the fo llowing considerations if yo u intend to configu re Dig One/PortServer TS 2/ 4 to hand le pri nter s.
Configuring Ports for Pr inters 4-3 T ips for telnet and rsh Printing Here are s ome t ips for h andling telnet and rsh printing: • If line feed and carriage return p roblems occ u r , try supplyin g a set line command that sp ecifies onlcr=on. This conver ts carriage returns to carriage r eturn/line feeds.
4-4 Config uring Printer Connectio ns: Command Line set line range=2 baud=9600 csize=8 sto pb=1 parity=n set flow range=2 cts=on ixon=off ixoff =off.
Configuring Ports for Pr inters 4-5 Configuring a Port for Direct-Acces s Printing Direct access printing allows T elnet users on the LAN to access a port and to issue print command s directly to the printer .
4-6 Configuri ng a Por t for D irect-Acces s Pr inting.
Configur ing Ports for M odems 5-1 Chapter 5 Configurin g Ports for Modems In This Chapter This chapter descr ibes how to confi gure Digi One/PortSe rver TS 2/4 ports fo r modem connections. It discusses the foll owing topics: • T ips on Conf iguring A Modem .
5-2 Tips on Co nfiguri ng A Modem Ti ps on Configur ing A Modem Here are some tips on configuring modems to work with Digi One/PortServer TS 2/4: • Configure the modem so that DC D goes high when it receives an incoming connection request.
Configur ing Ports for M odems 5-3 Configuring Ports for Modems: Web Interface Use this pro cedure to configure a port for a modem fr om the web interface. 1. Access the web interface by entering the Digi One/PortServer TS 2/4 IP addr ess in a browser ’ s URL window .
5-4 Configur ing Ports for Outgoing/Bi -Directiona l Connec- Example In this example, ports 1 and 2 are set up for incoming modem connectio ns using R TS/CTS flow control.
Configu ring Ports for Term inals an d Computers 6-1 Chapter 6 Configuring Ports for T erminals and C omput ers In This Chapter This chapter descr ibes how to confi gure Digi One/PortSe rver TS 2/4 ports fo r terminal and computer connections. It discu sses the follow ing topics: • Configur ing Ports for T erminals: W eb In terface .
6-2 Configur ing Ports for Terminal s: Web Interf ace Configuring Ports for T erminal s: Web Interface Use this pro cedure to configure a port fro m the web interface. 1. Access the web interface by entering the Digi One/PortServer TS 2/4 IP addr ess in a browser ’ s URL window .
Configu ring Ports for Term inals an d Computers 6-3 • bps is the line speed • charact ers is the character size • pari ty is the parity sche me to use on this line • num-bits is the number of stop bits to use 3.
6-4 About Comput er Connection s.
Configuring Autoconnectio n 7-1 Chapter 7 Conf igurin g Auto connec tion In This Chapter This Chapter discus ses how to configure the a utoconnection fe ature. It c overs the following topics: • About Autoconn ection . . . . . . . . . . . . . . . . .
7-2 About Autoconnection About Autoconnection The autoconnection feature allows you to configure a user to access the Digi One/PortServer TS 2/4 and then be automatically connected to a host on the LAN. You ca n implement autoconnectio n in the followin g ways: • By port.
Configuring Autoconnectio n 7-3 Configuring a User for Autoconn ection: Web Interface 1. Access the web interface by entering the Digi One/PortServer TS 2/4 IP addr ess in a browser ’ s URL window . 2. Log in to the Digi One/PortServer T S 2/4 as root.
7-4 Configur ing a User for Au toconnection: Comma nd Line.
Configuring PPP 8-1 Chapter 8 Configurin g PPP In This Chapter This chapter discu sses how to configure PPP connecti ons. It covers the followin g topics: • Configurin g PPP Connections: W eb Interf ace . . . . . . . . . . . . . . . . . . . . . . . .
8-2 Configur ing PPP Co nnections: Web In terface Configuring PPP Conn ections: Web Interface Use this pro cedure to configure PPP conn ections from the web interface. 1. Access the web interface by placing the IP addr ess of the Digi d evice in the URL window of a brow ser .
Configuring PPP 8-3 Configuring Inbound PPP Connections: Command Line Use this section to conf igure simp le inbound PPP co nnections from th e command line. For info rmation on fine-tunin g PPP conn ections, see the set user command in the Dig i O ne/PortServer TS Comman d Refer ence .
8-4 Configuri ng Inbound PPP Connect ions: Command L ine 7. T o configure an IP a ddress for the local end of the PPP connection, enter th e following com- mand: set user name= name localipaddr= ip-address where name is the us er ’ s name a nd ip-addr ess is the IP address to assign to the local end of the PPP connection.
Configuring PPP 8-5 Configuring Outbound PPP Connections: Command Line This section descr ibes how to configur e outbound PPP connect ions. Use it to configu re outbou nd only connecti ons or to configur e the outbound portion of bidirectio nal connections.
8-6 Configuri ng Outboun d PPP Connection s: Comma nd Line set user name= name outgoing=on device= device where d evice is either the Digi-supplied device or the outboun d device created earlier in this pro- cedure Example: set user name=pppout outgoing=on device=gendialer 8.
Configuring IP Routing 9-1 Chapter 9 Confi gurin g IP Ro uting In This Chapter This chapter d escribes how to conf igure IP routing. It dis cusses t he following topics: • Introduction to Routing . . . . . . . . . . . . . . . . . . . . . . . . . . .
9-2 Introduc tion to Routing Introduction to Rou ting This sectio n provides some in troductory i nformation on rou ting. What is Routing Routing is the method, employed b y IP software, of choosing a path over which to send packets betw een sy stems on di fferen t phys ica l net work s.
Configuring IP Routing 9-3 About RIP Routing Updates Introduct ion RIP defin es a method for propagat ing routing info rmation amon g routers. It provi des IP softwa re with the information needed to make intelligent routing decisions.
9-4 About RIP Routing Upd ates regarded R2 as an alternate path t o Net 1. The second is called “poison reverse,” which stipulates that r outes are advertised as unreachable on the interface on which the route is learned.
Configuring IP Routing 9-5 Configuring Static Routes This section descr ibes how to configur e Digi One/PortS erver TS 2/4 for static routes . Related I nformation See the set route command in the Digi One/PortServer TS Command Refer ence .
9-6 Configuri ng Dynamic Ro utes Using RIP Configuring Dynamic R outes Using RIP This section descr ibes how to configur e Digi One/PortS erver TS 2/4 for dynamic routi ng. Related I nformation See the set forwarding command in the Digi O ne/ PortS erve r T S Com man d Re ference .
Configuring IP Routing 9-7 Configuring Proxy A RP This section descr ibes how to confi gure Digi One/Port Server TS 2/4 for Proxy A RP . Related I nformation See the set forwarding command in the Digi O ne/ PortS erve r T S Com man d Re ference .
9-8 Configuring Proxy ARP.
Configu ring Cons ole Managemen t 10-1 Chapter 10 Conf igurin g Cons ole Managem ent In This Chapter • About Cons ole Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10-2 • Configur ing Console Managemen t: W eb Interface .
10-2 About Console Man agement Abo ut Co nsol e Ma nagem ent Digi One/PortServer TS 2 /4 can be configured to remotely manage networ k devices, such as routers , swit ches , and se rver s, w hich u sua lly pro vide EI A-23 2 se rial por ts for m anag ement .
Configu ring Cons ole Managemen t 10-3 where • name is the name of a user • host is either an IP address or DNS name of a ho st running TFTP • key is the name of a file that contains the DSA public k ey . If your host’ s implementation requires a complete path to the file, specify the path here as well.
10-4 Configuring Console Mana gement: Comm and Line.
Configu ring Modb us 11-1 Chapter 1 1 Configurin g Modbus In This Chapter • About Modbu s . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .11- 2 • Configur ing Modbus Using the W eb Interface . . .
11-2 About Modbus About Modbus What Is Modbus Modbus is a p rotocol that defines a method for devices in an industrial a utomat ion enviro nme nt to communicate. It allows a single c ontrolling unit, called a protocol maste r, to manage one or more units, called protocol slaves .
Configu ring Modb us 11-3 Configuring Modbus Usi ng the Web Interface 1. Access the Digi One/PortServer TS 2/4 from a web browser by entering the Digi One/PortServer TS 2/ 4 IP ad dress in t he URL win dow . 2. Sign on to the Digi On e/PortServer TS 2/ 4.
11-4 Configuring Mo dbus from the Command Line Configuring Mod bus from the Command Li ne Use t his p roce du re to c onf igur e a D igi devi ce for Modbu s. Starting Point This procedure assumes that you have logged on to the Digi device as root. Procedure 1.
Configu ring Modb us 11-5 • A Modbus protoco l unit number for each slave. This can be specifies in any of the following ways: (a) An indivi dual unit number . (b) A range of unit n umbers. (c) All, which means accept messages carrying any Modbus pr otocol unit number .
11-6 Examples Example s Configuring Net work-Connected Masters Introdu ction Here are a few points regarding this conf iguration: • All timers for both masters and slaves are using defaults. • The rang e field on th e set modbus master command is an index nu mber that Digi One IA identi- fies these masters.
Configuring Se curity Features 12-1 Chapter 12 Confi guring S ecurit y Fea tures In This Chapter This chapter describes Digi One/PortServer TS 2/4 security features and discusses how to configur e them. It presents the following to pics: • Contr olling Access to the Dig i One/PortSe rver TS 2/4 Configur ation .
12-2 Controlling Access to the Digi One/PortServer TS 2/4 Con- Controlling Access to the Digi One/PortSe rver TS 2/4 Configuration Digi One/PortServer TS 2/4 restricts a ccess to the con figuration by d efining the following types of user s: • The root user , who has unlimited access to Digi One/PortServer TS 2/4 commands.
Configuring Se curity Features 12-3 Controlling Access to Outbound Ports This section describes methods for controlling access to outbound serial ports.
12-4 Issuing Us er Pass words Issuing User Passwords This section discu sses how to iss ue user passwords . Related I nformation See the newpass and set user co mmands in the Digi O ne/PortSer ver TS Command Refer ence .
Configuring Se curity Features 12-5 Configuring SSH V ersion 2 for Secure Communi cation This sec tion dis cusse s ho w to conf igu re a user to use S SH vers ion 2 enc ryption.
12-6 Configuring SSH V ersion 2 for Secure Communicati on.
Configuring DNS 13-1 Chapter 13 Confi gurin g DNS In This Chapter This chapter discu sses how to configure Digi One/Port Server TS 2/4 to us e DNS. T opics dis cussed include the follo wing: • About the Domain Name System. . . . . . . . . . . . . . .
13-2 About the Domain Name System About the Domain Name System This section discu sses key concepts of the domain name system. Purpose of DNS The domain name system maps do main names to information associated with these names, such as IP addresses.
Configuring DNS 13-3 Configuration Pr ocedures Procedure for Usi ng a Name Server T o configure a DNS server , enter the following command: set config domain= domain myname= name d ns= ip-address wher.
13-4 Configuration Pr ocedures.
Configuring SNMP 14-1 Chapter 14 Configuring SNMP In This Chapter This chapter describes how to configure the Digi One/Por tServer TS 2/4 SNMP agent. It discusses the followin g topics: • About SNMP and the Digi One/PortServ er TS 2/4 Agent . . . . .
14-2 About SNMP and the D igi One/PortSer ver TS 2/ 4 Agent About SNMP and the Digi One/Po rtServer TS 2/4 Agent This secti on introd uces SNMP and networ k management in TCP/IP networks, and it d escribes t he Digi One/PortServer TS 2/4 agen t.
Configuring SNMP 14-3 Configuration Pr ocedure: We b In terface 1. Access the web interface by entering the Digi One/PortServer TS 2/4 IP addr ess in a browser ’ s URL window . 2. Log in to the Digi One/PortServer T S 2/4 as root. The default pas sword is dbps, which should be changed.
14-4 Configurati on Procedu re: Command Li ne.
Configuring Users 15-1 Chapter 15 Confi gurin g User s In This Chapter This chapter discu sses how to configure users. It covers the followi ng topics: • About Conf iguring Users . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
15-2 About Configur ing Users About Configur ing Users Although it is not require d, the Digi One/PortServer TS 2/4 is often configured to accommodate the requirements of p articular users.
Configuring Users 15-3 Configuring a User: Web Interface Use this section to configure users with from the web interface. 1. Access the web interface by entering the Digi One/PortServer TS 2/4 IP addr ess in a browser ’ s URL window . 2. Log in to the Digi One/PortServer T S 2/4 as root.
15-4 Configuring a User: Comman d Line Exampl es Configuring a User: Command Line Examples This section consists of a set of examples that tell yo u how to use the set user co mmand to configure various user attributes . Configuring a User for a Password In this example, the set us er command configures a new u ser .
Managing the OS and Configu ration 16-1 Chapter 16 Managing th e OS and Configu ration In This Chapter This chapter provi des information on upda ting the operating system (O S) and managing t he configurat ion. T opics includ e the following : • Upgrading th e OS (Firmware): W eb Interf ace .
16-2 Upgrading the OS (Fir mware): Web In terface Upgrading the OS (Firmware): Web Interfac e Use this section to upgrade the firmware using the web interface. 1. Access the web interface by entering the Digi One/PortServer TS 2/4 IP addr ess in a browser ’ s URL window .
Managing the OS and Configu ration 16-3 Upgrading the OS (Firmware): Command Line This section descr ibes how to upgrade the Digi One/P ortServer TS 2/4 op erating system (OS). The OS is stored in flash ROM and can be upgraded without changi ng the ROM or other hardware.
16-4 Co nfi gur ing D igi One /Por tSer ver T S 2/ 4 fr om a Rem ote Configuring Dig i One/PortS erver TS 2/4 from a R emote H ost This sectio n disc usses re mote con figura tio n, that is , configu ring Dig i One/P or tServ er TS 2/4 f rom a remote ho st and th en downlo ad ing the c onfigu ration file to Digi One/PortSer ver TS 2/4.
Managing the OS and Configu ration 16-5 Copying a Configur ation File from a Host to Digi One/ PortServer TS 2/4 This section describes how to copy th e configuration file from a host to Digi One/PortServe r TS 2/4 after the file h as been edited on the h ost.
16-6 Res etting the Co nfiguration to D efaults Resetting the Configuration to Defaults Use this sect ion to learn ho w to use the revert command to reset the all or some of the configu ration factory or to the latest configuration stored in NVRAM.
Conf igur ati on Ex ample s 17-1 Chapter 17 Configuration Examples This chapter provides several simple, but complete, configur ation examples. If you find that the examples implement exactly the features needed for your network, simply copy them, making appropriate substitutio ns for site-specific informatio n such as IP addresses.
17-2 Ter minal Server Co nfiguration Without RealPort T erminal Server Configurat ion Without RealPort In this configuration, Digi One/PortServer TS 2/4 functio ns as a terminal serv er , providing T elnet and Rlogin a ccess to hosts.
Conf igur ati on Ex ample s 17-3 T erminal Serv er Configuration Using Autoconnectio n This example shows a Digi One/PortServer TS 2/4 functioning as a term inal server implementing autoconnection. • The terminals are co nnected to au toconnect ports.
17-4 Terminal Server Configurat ion Usin g RealPort T erminal Server Configurat ion Using RealPort In this example, the Digi One/PortServer TS 2/4 is sim ply providing ports for the LA N-based host using RealPort. The configuration is exceedingl y simple because port attr ibutes are configured on the host it self.
Digi O ne/PortS erver TS 2 /4 Troubles hooting 18-1 Chapter 18 Dig i One/PortServer TS 2/4 T roublesh ooting In This Chapter • Symptom: Digi One/PortServer TS 2/4 Does Not Boot . . . . . . . . . . . . . . . . . 18-2 • Symptom: Cannot T elnet to the Digi One/PortServer TS 2/4 .
18-2 Symptom: Digi One/ PortServer TS 2/4 Does N ot Boot Symptom: Digi One/ PortServer T S 2/4 Do es Not Bo ot Introdu ction Use the information pr ovided in this d iscussion when D igi One/PortServer TS 2/4 w ill not complete the boot cycle. Procedures Things to T ry See .
Digi O ne/PortS erver TS 2 /4 Troubles hooting 18-3 Symptom: Cannot T elnet to the Digi One/P ortServer TS 2/4 Introdu ction Use the inf ormation prov ided in this discuss ion to troublesh oot net work problem s.
18-4 Symptom: Trouble Accessing a Port Symptom: T rouble Accessing a Por t Introdu ction Use t his pro cedure i f you ar e having t rouble acces sing a Digi One/Port Server T S 2/4 po rt. The spec ific probl em m ight be th at you ca nnot lo gon f ro m a term inal or the pr int er or modem is not work ing p rop erl y .
Digi O ne/PortS erver TS 2 /4 Troubles hooting 18-5 Key to Interpreting Dig i One/PortServer TS 2/4 LE Ds Here is a key t o inte rp reti ng Dig i On e/Po rtS erve r TS 2/ 4 LE Ds Procedure . V erifying TFTP on a UNIX System Use this procedure to verify that TFTP is working corr ectly on your UNIX host.
18-6 Resetti ng Digi One/PortServer TS 2/4 Configuration to mkdir /tftpboot • If necessary , use this command to change permissions of th e directory to read, write and execute: chmod 777 /tftpboot .
Digi O ne/PortS erver TS 2 /4 Troubles hooting 18-7 V e rifying the Digi On e/PortServer TS 2/4 IP Address Use this pro cedure to check the IP address on the Digi One/PortServer T S 2/4. 1. Connect a termina l to a Digi One/PortServer TS 2/4 po rt. 2.
18-8 Verifyin g the Network Cablin g V eri fying the Network Cabling Use this procedure t o troublesho ot networ k cabling probl ems. 1. Check the Ethernet cable. V erify the following: • The Ethernet cable is connected securely at both ends. • The Ethernet cable is pinned correctly .
Digi O ne/PortS erver TS 2 /4 Troubles hooting 18-9 V erifying the RealPort Process Use one of these procedures to verify the R ealPort process: AIX: V erifying t he RealPort Process Use this topic to verify that the RealPor t daemon (proc ess) is r unning o n t he AIX sy ste m.
18-10 Verifying the RealPort Process Solaris: V erifying the RealPort Proc ess Use this topic for i nformation o n verifyin g that the RealPo rt process is r unning on a Solaris system . 1. T ype the following command: ps -ef|grep ncxd 2. If the information that appears is not correct, do th e following: a.
Digi O ne/PortS erver TS 2 /4 Troubles hooting 18-11 Digi Contact Informati on Digi International 1 1001 Bren Road East Minnetonk a, MN 55343 U.S.A Customer Service and Supp ort W orld W ide W eb: h ttp://support.dig i.com email suppo rt@di gi.com T ele phone (U.
18-12 Dig i Contact Info rmation.
An important point after buying a device Digi TS 2/4 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Digi TS 2/4 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Digi TS 2/4 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Digi TS 2/4 you will learn all the available features of the product, as well as information on its operation. The information that you get Digi TS 2/4 will certainly help you make a decision on the purchase.
If you already are a holder of Digi TS 2/4, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Digi TS 2/4.
However, one of the most important roles played by the user manual is to help in solving problems with Digi TS 2/4. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Digi TS 2/4 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
