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A good user manual
The rules should oblige the seller to give the purchaser an operating instrucion of Allied Telesis AR300 series, along with an item. The lack of an instruction or false information given to customer shall constitute grounds to apply for a complaint because of nonconformity of goods with the contract. In accordance with the law, a customer can receive an instruction in non-paper form; lately graphic and electronic forms of the manuals, as well as instructional videos have been majorly used. A necessary precondition for this is the unmistakable, legible character of an instruction.
What is an instruction?
The term originates from the Latin word „instructio”, which means organizing. Therefore, in an instruction of Allied Telesis AR300 series one could find a process description. An instruction's purpose is to teach, to ease the start-up and an item's use or performance of certain activities. An instruction is a compilation of information about an item/a service, it is a clue.
Unfortunately, only a few customers devote their time to read an instruction of Allied Telesis AR300 series. A good user manual introduces us to a number of additional functionalities of the purchased item, and also helps us to avoid the formation of most of the defects.
What should a perfect user manual contain?
First and foremost, an user manual of Allied Telesis AR300 series should contain:
- informations concerning technical data of Allied Telesis AR300 series
- name of the manufacturer and a year of construction of the Allied Telesis AR300 series item
- rules of operation, control and maintenance of the Allied Telesis AR300 series item
- safety signs and mark certificates which confirm compatibility with appropriate standards
Why don't we read the manuals?
Usually it results from the lack of time and certainty about functionalities of purchased items. Unfortunately, networking and start-up of Allied Telesis AR300 series alone are not enough. An instruction contains a number of clues concerning respective functionalities, safety rules, maintenance methods (what means should be used), eventual defects of Allied Telesis AR300 series, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the Allied Telesis service. Lately animated manuals and instructional videos are quite popular among customers. These kinds of user manuals are effective; they assure that a customer will familiarize himself with the whole material, and won't skip complicated, technical information of Allied Telesis AR300 series.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the Allied Telesis AR300 series item, and its use of respective accessory, as well as information concerning all the functions and facilities.
After a successful purchase of an item one should find a moment and get to know with every part of an instruction. Currently the manuals are carefully prearranged and translated, so they could be fully understood by its users. The manuals will serve as an informational aid.
Table of contents for the manual
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Page 1
C613-16030-00 REV B www .alliedtelesis.com How T o | Intr oduction Ideally , setting up an ISDN connection is v er y much a straightf orward process: z Connect the r outer to the ISDN network interface. z Configure ISDN call definitions on the router . See Ho w T o Conf igure ISDN Calls On Allied T elesis Routers , a vailable from www .alliedtelesi[...]
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Page 2
2 Ho w to tr oub leshoot ISDN Step 1: Is the r outer communicating with the ISDN netw ork at the signalling le vel? When the r outer is connected to the ISDN networ k, eith er by plugg ing it into an NT1 if the r outer ha s an S/T interface , or by plugging it dir ectly into the ISDN network if the r outer has a U interface , it establishes a low-l[...]
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Page 3
3 If the interface is not activated, the re ason could be one of the f ollowing: 1. The interface has been put into NT mode . O n t h e AT - A R 0 4 1 a n d AT - A R 0 4 2 m u l t i - B R I N S M modules it is possible to put the ISDN interface(s) into NT mode so that they can emulate a network switch interface. This can be useful for be nch testin[...]
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Page 4
4 3. The cable connecting the r outer to the ISDN network or NTI is faulty . T r y a differ ent cable . 4. There is a fault in the ISDN network or the NT1. If options 1, 2 and 3 do not show any faults on the router , then contact y our ISDN network pr ovider and see if they can fi nd the fault on their network. Step 2: Is the r outer communicating [...]
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Page 5
5 If the LAPD is not alive, the reason could be one of the f ollowing: 1. The TEI mode has been set incorr ectly . On a Basic Rate interface, the TEI mode ought to be automatic , so that the router does not mandate a TEI value to the switch, but will automatically accept whatev er v alue is assigned by the sw itch. The TE I mode of the BRI interfac[...]
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Page 6
6 When it comes to diagnosing an ISDN connection, the tw o most impor tant columns in this table are Duration and Cause. The Duration column The Duration column tells y ou immediately whet her or not the call ev er connected. If the entr y in this column is CLEARED , then the call ne ver connected. If the entry in this column is a time, then the ca[...]
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Page 7
7 Also , a call that is closed due to P AP/CHAP au thentication failure has a cause code of 16 because the call work ed fine at the ISDN lev el, a nd was closed due to an indication from the PPP la yer . In this case , if the local router decided that the P AP/CHAP username/ passw ord it receiv ed wer e invalid, then the le tter pr eceding the caus[...]
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Page 8
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