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MT5634ZBA-V -V92 User Guide Modem with V oice, V .92 Dat a, and Super G3 Fax.
ii MultiModemZBA-V-V92 User Guide MT5634ZBA-V-V92 S0000244 Revision A Copyright © 2002 by Multi-Tech Systems, Inc. All rights reserved. This publication may not be reproduced, in whole or in part, without prior expressed written permission from Multi-Tech Systems, Inc.
Contents iii MultiModemZBA-V-V92 User Guide T able of Contents Chapter 1 - Introduction ............................................................................................... 2 Product Description .............................................
Contents iv MultiModemZBA-V-V92 User Guide Chapter 4- AT Commands, S-Registers, and Result Codes .................................... 20 AT Commands .................................................................................................. 21 S-Registers .
Contents v MultiModemZBA-V-V92 User Guide Appendix A - Regulatory Compliance ....................................................................... 81 FCC Part 68 Telecom ...............................................................................
Chapt er 1 Intr oduc tion.
1 Introduction 2 MultiModemZBA-V-V92 User Guide *Though this modem is capable of 56K bps download performance, line impairments, public telephone infrastructure, and other external technological factors may prevent maximum 56K bps connections. Chapt e r 1 - Intr o d u c tion Congratulations on your purchase of the MultiModemZBA-V-V92 modem.
1 Introduction 3 MultiModemZBA-V-V92 User Guide W e Supply Ö An MT5634ZBA-V-V92 data/fax/voice modem Ö A set of four self-adhesive plastic feet Ö A printed Quick Start Guide Ö A MultiModemZBA inst.
Chapt er 2 Installation.
2 Installation 5 MultiModemZBA-V-V92 User Guide Chapt er 2 - Installation This chapter shows you step-by-step how to set up your Multi-Tech data/fax/voice modem and make your first calls. Safety W arnings • Use this product only with UL- and CUL-listed computers (U.
2 Installation 6 MultiModemZBA-V-V92 User Guide Step 2: Change the Internal Jumpers This step is required only if: Ö You intend to use the modem on a leased line. Ö You intend to add a monophonic external speaker to your modem with the voice option.
2 Installation 7 MultiModemZBA-V-V92 User Guide Location of the Jumpers J10 Dial-Up/Leased Line J1 1 Originate/Answer Dial-up (default) Leased line Answer (default) Originate J10 J1 1 J8 J8 Speaker Mode Open: mono Closed: stereo (default) Figure 2-2.
2 Installation 8 MultiModemZBA-V-V92 User Guide Step 3: Connect the Modem to Y our System Turn off your computer. Place the modem in a convenient location, and then connect it to your co mputer ’ s serial port, the telephone line or leased line, AC power, and, optionally, your telephone.
2 Installation 9 MultiModemZBA-V-V92 User Guide Connect the Modem to a Phone (Optional) If you want to connect a phone to same line as the modem, plug it into the modem ’ s PHONE jack. Important: The PHONE jack is not interchangeable with the LINE jack.
2 Installation 10 MultiModemZBA-V-V92 User Guide Power-On Test Test the modem by turning it on. When you turn it on, the modem performs a diagnostic self-test, after which the 56 indicator should light. If this does not happen, check that the power switch is on, the power supply is solidly connected, and the AC outlet is live.
2 Installation 11 MultiModemZBA-V-V92 User Guide Step 5: Configure the Modem for Y our Country Different countries have different requirements for how modems must function. Therefore, before you use your modem, you must configure it to match the defaults of the country in which you are using it.
2 Installation 12 MultiModemZBA-V-V92 User Guide Step 6: Install and Configure Y our Software You may use either the communication program included with your modem or a third-party program.
Chapt er 3 Ope r ation.
3 Operation 14 MultiModemZBA-V-V92 User Guide Chapt er 3 - O pe r ation Your Multi-Tech modem operates under the control of a communication program, such as the PhoneTools program included with the modem. It also can operate under other general-purpose data communication programs, such as Windows HyperTerminal.
3 Operation 15 MultiModemZBA-V-V92 User Guide OH Off-Hook. The OH indicator lights when the modem is off-hook, which occurs when the modem is dialing, online, or answering a call. The LED flashes when the modem pulse-dials. TR Terminal Ready. The TR indicator lights when a communications program is using the modem.
3 Operation 16 MultiModemZBA-V-V92 User Guide Leased Line Operation The MultiModemZBA-V-V92 modem can be used on a two-wire leased line. A leased line is a private, permanent, telephone connection between two points. Unlike normal dialup connections, a leased line is always active.
3 Operation 17 MultiModemZBA-V-V92 User Guide V .92 Operation Because the V.92 protocol is new and still largely unsupported by central servers, some features are disabled by default in the initial release of the MT5634ZBA-V-V92 modem. This section describes the status of the V.
3 Operation 18 MultiModemZBA-V-V92 User Guide Dial-Up Networking Before you can connect to the Internet, you must set up a remote-node client program on your computer.
Chapt er 4 A T C ommands S- R egist e r s R esult C o d e s.
4 AT Commands, S-Registers, & Result Codes 20 MultiModemZBA-V-V92 User Guide Chapt er 4- A T C ommands, S-R egist ers, and R esult C o d e s AT commands are used to control the operation of your modem. They are so called because each command must be preceded by the characters AT to get the AT tention of the modem.
4 AT Commands, S-Registers, & Result Codes 21 MultiModemZBA-V-V92 User Guide A T Commands Command: AT Attention Code Values: n/a Description: The attention code precedes all command lines except A/ and the escape sequence. Command: E NTER Key Values: n/a Description: Press the E NTER or R ETURN key to execute most commands.
4 AT Commands, S-Registers, & Result Codes 22 MultiModemZBA-V-V92 User Guide part of command. If silence is not detected, the modem returns a N O ANSWER code. ^ Disable data calling tone transmission. $ Detect AT&T call card “ bong ” tone.
4 AT Commands, S-Registers, & Result Codes 23 MultiModemZBA-V-V92 User Guide Command: M n Monitor Speaker Mode Values: n = 0, 1, 2, or 3 Default: 1 Description: M0 Speaker always off. M1 Speaker on until carrier signal detected. M2 Speaker always on when modem is off-hook.
4 AT Commands, S-Registers, & Result Codes 24 MultiModemZBA-V-V92 User Guide Command: T Tone Dialing Values: P, T Default: T Description: Configures the modem for DTMF (touch-tone) dialing. Dialed digits are tone dialed until a P command or dial modifier is re- ceived.
4 AT Commands, S-Registers, & Result Codes 25 MultiModemZBA-V-V92 User Guide Command: &D n Data Terminal Ready (DTR) Control Values: n = 0, 1, 2, or 3 Default: 2 Description: &D0 Modem ignores the true status of the DTR signal and responds as if it is always on.
4 AT Commands, S-Registers, & Result Codes 26 MultiModemZBA-V-V92 User Guide Command: &S n Data Set Ready (DSR) Control Values: n = 0 or 1 Default: 0 Description: &S0 DSR is always high (on). &S1 DSR goes high only during a connection.
4 AT Commands, S-Registers, & Result Codes 27 MultiModemZBA-V-V92 User Guide Command: B n Transmit Break Values: n = 0 – 9 in 100 ms units Default: 3 Description: In non-error-correction mode only, sends a break signal of the specified length to a remote modem.
4 AT Commands, S-Registers, & Result Codes 28 MultiModemZBA-V-V92 User Guide Command: N n Error Correction Mode Selection Values: n = 0 – 5, or 7 Default: 3 Description: N0 Non-error correction mode with data buffering (buffer mode; same as &Q6 ).
4 AT Commands, S-Registers, & Result Codes 29 MultiModemZBA-V-V92 User Guide Command: -C n Data Calling Tone Values: n = 0 or 1 Defaults: 0 Description: -C0 Disables V.25 data calling tone to deny remote data/fax/voice discrimination. -C1 Enables V.
4 AT Commands, S-Registers, & Result Codes 30 MultiModemZBA-V-V92 User Guide Command: %H n Direct Connect Enable Values: n = 0, 1 Default: 0 Description: %H0 Sets callback security to normal operation. %H1 All callback security calls will be direct connect regardless of whether the password or phone number has the - character.
4 AT Commands, S-Registers, & Result Codes 31 MultiModemZBA-V-V92 User Guide Command: +DCS= x,y Select V.44 Data Compression Values: x = 0 or 1 (V.42 bis ) y = 0, 1, or 2 (V.44) Default: 1, 2 Description: Selects V.42bis/V.44 data compression. +DCS=0,0 V.
4 AT Commands, S-Registers, & Result Codes 32 MultiModemZBA-V-V92 User Guide +DS44? Reports current options in the following format: direction , 0, 0, max_codewords_tx , max_codewords_rx , max_string_tx , max_string_rx , max_history_tx , max_history_rx.
4 AT Commands, S-Registers, & Result Codes 33 MultiModemZBA-V-V92 User Guide Command: +MS= Modulation Selection Values: See description. Defaults: See description.
4 AT Commands, S-Registers, & Result Codes 34 MultiModemZBA-V-V92 User Guide automode An optional numeric value that enables or disables automatic modulation negotiation using V.8 bis/V.8 or V.32 bis Annex A. Automode is disabled if values are specified for the max_rate and max_rx_rate parameters.
4 AT Commands, S-Registers, & Result Codes 35 MultiModemZBA-V-V92 User Guide Command: +PIG= n PCM Upstream Ignore Values: n = 0 or 1 Default: 1 Description: Controls the use of PCM upstream during V.92 operation. PCM upstream allows faster upload speeds to a V.
4 AT Commands, S-Registers, & Result Codes 36 MultiModemZBA-V-V92 User Guide +PMHR=11 G rant MOH request with 12 minute timeout +PMHR=12 G rant MOH request with 16 minute timeout +PMHR=13 Grant MO.
4 AT Commands, S-Registers, & Result Codes 37 MultiModemZBA-V-V92 User Guide Command: +VCID= n Caller ID Selection Values: n = 0, 1, or 2 Default: 0 Description: Enables Caller ID detection and configures the reporting and presentation of the Caller ID data that is detected after the first ring.
4 AT Commands, S-Registers, & Result Codes 38 MultiModemZBA-V-V92 User Guide Command: #CBF? Callback Failed Attempts Display Values: n/a Default: n/a Description: Requests the number of failed callback passwords since reset or power-up. This number can be stored to nonvolatile memory using the &W command.
4 AT Commands, S-Registers, & Result Codes 39 MultiModemZBA-V-V92 User Guide Command: #P n Set 11-bit Parity Values: n = 0 or 1 Default: 2 Description: #P0 No parity.
4 AT Commands, S-Registers, & Result Codes 40 MultiModemZBA-V-V92 User Guide S-Registers Certain modem values, or parameters, are stored in memory locations called S-registers . Use the S command to read or to alter the contents of S-registers (see previous section).
4 AT Commands, S-Registers, & Result Codes 41 MultiModemZBA-V-V92 User Guide S36 decimal 0 – 7 7 Specifies the action to take in the event of a negotiation failure when error control is selected. (See S48 .) S37 decimal 0 – 19 0 Sets the maximum V.
4 AT Commands, S-Registers, & Result Codes 42 MultiModemZBA-V-V92 User Guide 16 46666 bps 17 48000 bps 18 49333 bps 19 50666 bps 20 52000 bps 21 53333 bps 22 54666 bps 23 56000 bps S42 decimal 0 – 1 1 Enables/disables the 56K auto rate. When 56K auto is disabled, fallback to V.
4 AT Commands, S-Registers, & Result Codes 43 MultiModemZBA-V-V92 User Guide Result Codes In command mode your modem can send responses called result codes to your computer. Result codes are used by communications programs and can also appear on your monitor.
4 AT Commands, S-Registers, & Result Codes 44 MultiModemZBA-V-V92 User Guide 90 BLACKLIST FULL Blacklist is full 100 CONNECT 28000 * Connected at 28000 bps, 56K rate 101 CONNECT 29333 * Connected .
Chapt er 5 Remot e C o n f igur ation.
5 Remote Configuration 47 MultiModemZBA-V-V92 User Guide Chapt er 5 - R emot e C onf igur ation Remote configuration is a network management tool that allows you to configure MT5634ZBA modems anywhere in your network from one location.
5 Remote Configuration 48 MultiModemZBA-V-V92 User Guide To Change the Remote Escape Character To further improve security, you can change a remote modem ’ s remote configuration escape charac- ter either locally or remotely. The remote configuration escape character is stored in register S9 .
Callb ack S ecurit y Chapt er 6.
6 Callback Security 57 MultiModemZBA-V-V92 User Guide Chapt er 6 - C allb ack S ecurit y This chapter describes how to use callback security with your modem. Callback security protects your network from unauthorized access and helps control long-distance costs.
6 Callback Security 58 MultiModemZBA-V-V92 User Guide To Turn Callback Security On and Off Callback security must be turned on to enter many callback security commands. 1. Open a data communications program such as HyperTerminal or PhoneTools. 2. In the terminal window, type AT#S xxxxxxxx , where xxxxxxxx is your password, and press E NTER .
6 Callback Security 59 MultiModemZBA-V-V92 User Guide To Assign Callback Passwords and Phone Numbers 1. Open a data communications program such as HyperTerminal or PhoneTools. 2. In the terminal window, type AT#S xxxxxxxx , where xxxxxxxx is your password, and press E NTER .
6 Callback Security 60 MultiModemZBA-V-V92 User Guide Calling Procedures Use the following procedures to call a modem that has callback security enabled. Note: Autoanswer must be enabled on the calling modem ( S0=1 ). Password-Only Callback Use this procedure when calling from a fixed location.
6 Callback Security 61 MultiModemZBA-V-V92 User Guide 6. After the modems reconnect, the following message reappears: Password> 7. Type the same password that you used to initiate the call. You have three attempts to enter the password or be disconnected.
6 Callback Security 62 MultiModemZBA-V-V92 User Guide Direct Connection Use this procedure when you want to connect without first being called back. The password that you use must be set up for an optional direct connection. 1. Using a data communications program such as HyperTerminal or PhoneTools, dial the number of the callback modem.
6 Callback Security 63 MultiModemZBA-V-V92 User Guide Command: #CBFR Callback Failed Attempts Reset Values: n/a Default: n/a Description: Resets the number of failed callback passwords to 0. This does not reset the number stored in nonvolatile memory.
6 Callback Security 64 MultiModemZBA-V-V92 User Guide Command: #CBS n Callback Enable/Disable Values: n = 0, 1, 2, or 3 Default: 0 Description: Enables or disables callback security options.
6 Callback Security 65 MultiModemZBA-V-V92 User Guide Command: &Z y=[+][-]x[,???] Store Dialing Command Values: y = 0 – 29 (callback security enabled) x = Dialing command string Default: None Description: Stores dialing command x in memory location y .
6 Callback Security 66 MultiModemZBA-V-V92 User Guide Location Password T elephone number 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Callback Assignments Form.
Chapt er 7 M o dem on Hold O pe r ation.
7 Modem on Hold Operation 68 MultiModemZBA-V-V92 User Guide Chapt er 7 - Modem on Hold O pe r ation What Is Modem on Hold? Your modem supports a feature called Modem on Hold when it is in V.92 mode. Modem on Hold works with your telephone company ’ s Call Waiting service to put a remote modem “ on hold ” while you answer a voice call.
7 Modem on Hold Operation 69 MultiModemZBA-V-V92 User Guide V.92 Modem on Hold Settings Select this option to open the V.92 Modem on Hold Settings dialog box. (You can also open this dialog box by double-clicking the MTMoh icon.) Use the V.92 Modem on Hold Settings dialog box to configure Modem on Hold operations.
7 Modem on Hold Operation 70 MultiModemZBA-V-V92 User Guide Check Modem Status The Call Status dialog box opens automatically when you receive a call. If you close it, you can re- open it by selecting this command. The Call Status dialog box displays information about the current call, including Caller ID information, if it is available.
7 Modem on Hold Operation 71 MultiModemZBA-V-V92 User Guide Using Modem on Hold To use Modem on Hold: You must have Call Waiting service from your telephone company. Your computer must be running Windows 95, 98, or Me. Your modem must be set to V.
7 Modem on Hold Operation 72 MultiModemZBA-V-V92 User Guide Resuming a Data Call You can complete a voice call at any time and resume your online connection by hanging up the tele- phone and clicking the Resume Data Call button. If Warn before timeout is selected in the V.
So lving P r oblems Chapt er 8.
8 Solving Problems 74 MultiModemZBA-V-V92 User Guide Chapt er 8 - S olving P r oblems Your modem was thoroughly tested at the factory before it was shipped. If you are unable to make a successful connection, or if you experience data loss or garbled characters during your connection, it is possible that the modem is defective.
8 Solving Problems 75 MultiModemZBA-V-V92 User Guide The Modem Does Not Respond to Commands Ö Make sure the modem is plugged in and turned on. (See “ None of the Indicators Light. ” ) Ö Make sure you are issuing the modem commands from data communication software, either manually in terminal mode or automatically by configuring the software.
8 Solving Problems 76 MultiModemZBA-V-V92 User Guide Ö The serial port might be defective. If you have another serial port, install the modem on it, change the COM port setting in your software, and try again. Ö The modem might have a problem beyond the scope of this user guide.
8 Solving Problems 77 MultiModemZBA-V-V92 User Guide Ö If the modem reports NO ANSWER , the other system has failed to go off-hook, or you might have dialed a wrong number. Check the number. Ö If the modem reports NO CARRIER , the phone was answered at the other end, but no connec- tion was made.
8 Solving Problems 78 MultiModemZBA-V-V92 User Guide The Modem Cannot Connect When Answering Ö The default DTR Control command ( &D2 ) inhibits autoanswer. To enable autoanswer, change DTR Control to &D0 , and make sure &Q0 , &Q5 , or &Q6 is also set.
8 Solving Problems 79 MultiModemZBA-V-V92 User Guide There Are Garbage Characters on the Monitor Ö Your computer and the remote computer might be set to different word lengths, stop bits, or parities. If you have connected at 8-N-1, try changing to 7-E-1, or vice-versa, using your communication software.
Appendixes Ap pendix A - R egulatory C omplianc e Ap pendix B - T echnic al Specific ations A ppendix C - Up g r ading the Mod e m A ppendix D - Installing a Modem Under L inux Ap pendix E - C onnec t.
A Regulatory Compliance 81 MultiModemZBA-V-V92 User Guide A p p endix A - R egulat o r y C omplian c e FCC Part 68 T elecom 1. This equipment complies with part 68 of the Federal Communications Commission Rules. On the outside surface of this equipment is a label that contains, among other information, the FCC registration number.
A Regulatory Compliance 82 MultiModemZBA-V-V92 User Guide FCC Part 15 This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
A Regulatory Compliance 83 MultiModemZBA-V-V92 User Guide Canadian Limitations Notice Notice: The ringer equivalence number (REN) assigned to each terminal device provides an indication of the maximum number of terminals allowed to be connected to a telephone interface.
A Regulatory Compliance 84 MultiModemZBA-V-V92 User Guide EMC, Safety , and R&TTE Directive Compliance The CE mark is affixed to this product to confirm compliance with the following European Comm.
A Regulatory Compliance 85 MultiModemZBA-V-V92 User Guide 5. Warning Notice: No ‘ 111 ’ or other calls can be made from this device during a mains power failure. 6. This equipment may not provide for the effective hand-over of a call to another device connected to the same line.
B Technical Specifications 86 MultiModemZBA-V-V92 User Guide A p p endix B - T echnic al S pecif i c ations The MultiModemZBAV-V92 modem meets the following specifications: Trade Name MultiModemZBA ™ Model Number MT5634ZBA Build Number MT5634ZBA-V-V92 Server-to-Client 56K speeds when accessing a V.
B Technical Specifications 87 MultiModemZBA-V-V92 User Guide conversion; U.S. Caller ID reporting; quick-connect startup; Modem on Hold (only when connected to a V.92 server). Command Buffer 40 characters Lightning Protection FCC Part 68 A/B surge Transmit Level -11 dBm (North America) — varies by country setting Frequency Stability ±0.
C Upgrading the Modem ’ s Firmware 88 MultiModemZBA-V-V92 User Guide A p p endix C - Up g r ading the Mo dem’ s F irmw ar e Introduction Your modem is controlled by semi-permanent software, called firmware , which is stored in flash memory. Firmware is nonvolatile; that is, it remains stored in memory when the modem is turned off.
C Upgrading the Modem ’ s Firmware 89 MultiModemZBA-V-V92 User Guide Step 2: Identify the Current Firmware Version Identify the current version of the firmware at the Multi-Tech Web site. If your modem already has the current firmware, there is no need to update it.
C Upgrading the Modem ’ s Firmware 90 MultiModemZBA-V-V92 User Guide Step 6: Upgrade the Modem ’ s Firmware Before you begin the following procedure, read the README.TXT file extracted from the upgrade ar- chive file. Note the file name for the new firmware (example: ARQG125A.
91 D Installing a Modem Under Linux MultiModemZBA-V-V92 User Guide A p p endix D - Installing a Mo dem Under Linux Introduction This appendix explains how to install a modem on a computer operating under the Red Hat Linux 6.2 operating system. Other versions of Red Hat and other Linux operating systems should be similar.
92 D Installing a Modem Under Linux MultiModemZBA-V-V92 User Guide Using the Modem to Call the Internet Linux allows different graphic user interfaces (GUI).
E Connecting to a Cisco Router 93 MultiModemZBA-V-V92 User Guide A p p endix E - C onnec ting t o a C is c o R o ut e r This appendix provides information on how to connect an MT5634ZBA-V-V92 modem to a Cisco ® router.
E Connecting to a Cisco Router 94 MultiModemZBA-V-V92 User Guide To Set the Parity of the Callback Security Messages The parity of the modem ’ s password prompt and messages must match the parity of the computer to which the modem is connected. 1. The default parity setting for your modem is no parity ( AT#CBP0 ).
E Connecting to a Cisco Router 95 MultiModemZBA-V-V92 User Guide Note that command echo and result codes have been turned off. If it becomes necessary to send additional AT commands to the modem after it has been so configured, there will be little feedback from the modem that it has received and acted upon the command.
E Connecting to a Cisco Router 96 MultiModemZBA-V-V92 User Guide 4. When you have finished configuring the remote modem, save the new configuration by typing AT&W0 < CR >, then type ATO < CR > to exit remote configuration. You can then break the connec- tion in the normal way.
F Warranty, Service, & Technical Support 97 MultiModemZBA-V-V92 User Guide A p p endix F - W a r r a n t y , S e rvic e, and T echnic a l Supp o r t Multi-T ech Systems, Inc.
F Warranty, Service, & Technical Support 98 MultiModemZBA-V-V92 User Guide Extended two-year overnight replacement service agreements are available for selected products. Please call MTS at (888) 288-5470, extension 5308 or visit our web site at http://www.
F Warranty, Service, & Technical Support 99 MultiModemZBA-V-V92 User Guide Online W arranty Registration If you have access to the World Wide Web, you can register your Multi-Tech product online at http:// www.multitech.com/register/ . Service U.S.
F Warranty, Service, & Technical Support 100 MultiModemZBA-V-V92 User Guide Please direct questions regarding technical matters, product configuration, verification that the product is defective, etc., to our Technical Support department nearest you, as listed at http:// www.
Index.
Index 102 MultiModemZBA-V-V92 User Guide Index Symbols 1 1-bit mode 30 56K operation digital loss when used with PBX 42 disabling the auto rate 42 maximum connect speed 41 A abort timer 40 Adaptive An.
Index 103 MultiModemZBA-V-V92 User Guide Command Speed Response command 30 command string 20 communication programs 12, 20, 75 Communication Standard command 21 compression, data 31, 78 configuration,.
Index 104 MultiModemZBA-V-V92 User Guide S035 40 S036 41 S037 41 S038 41 S042 42 S048 42 S089 42 S108 42 setting 23 safety 5 Select Maximum MNP Block Size command 26 Select V .
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Jedoch ist die eine der wichtigsten Rollen, die eine Bedienungsanleitung für den Nutzer spielt, die Hilfe bei der Lösung von Problemen mit Multi Tech Equipment MT5634ZBA-V-V92. Sie finden dort fast immer Troubleshooting, also die am häufigsten auftauchenden Störungen und Mängel bei Multi Tech Equipment MT5634ZBA-V-V92 gemeinsam mit Hinweisen bezüglich der Arten ihrer Lösung. Sogar wenn es Ihnen nicht gelingen sollte das Problem alleine zu bewältigen, die Anleitung zeigt Ihnen die weitere Vorgehensweise – den Kontakt zur Kundenberatung oder dem naheliegenden Service.
