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The rules should oblige the seller to give the purchaser an operating instrucion of BT 450, 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 BT 450 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 BT 450. 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 BT 450 should contain:
- informations concerning technical data of BT 450
- name of the manufacturer and a year of construction of the BT 450 item
- rules of operation, control and maintenance of the BT 450 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 BT 450 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 BT 450, and methods of problem resolution. Eventually, when one still can't find the answer to his problems, he will be directed to the BT 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 BT 450.
Why one should read the manuals?
It is mostly in the manuals where we will find the details concerning construction and possibility of the BT 450 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
Use r fr i e n dl y Gu id e Duet 450 Clock T elephone[...]
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At a gl a nc e Lift flap[...]
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3 Co nt e nt s At a gl a nc e 2 I nt r oduct io n 4 I nst al l i n g y ou r Duet 45 0 5 Cl oc k T e l e p h o ne Usi n g t h e T e l e p h on e 8 Usi n g t h e clo c k 1 1 T ec h nic a l i n for ma t ion 1 2 I n dex 1 4 I n t h is use r gu ide , w e ’v e i ncl uded h el pfu l ti ps a n d us efu l not es . Hints and tips boxes[...]
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4 I nt r oduct i o n Y ou r Duet 45 0 Cl o c k T e l e p h on e i s des i g n e d fo r eas e o f us e a nd m a de t o t h e h i g h s t a n da r ds s et b y BT W e thank you for making the right choice and expect that your machine will give you many years of quality ser vice. Please read the instr uctions carefully befor e use, and keep this User G[...]
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The emergency ser vices can be contacted in the UK by dialling 999. Y ou may also dial 112, which is valid in any countr y that is a member of the European Community . Y ou may not be able to make an emergency call in cer tain situations: • If the telephone line is disconnected. • If there is a fault on the line from your phone or on the networ[...]
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A Backup batter y will ensure your clock settings are retained in the event of a mains power failure. Y our telephone will function as nor mal even when the mains power is of f. Loosen the screw on the batter y compar tment door . Connect and inser t a 9 volt batter y (not included). Install backup battery Replace the cover . T ighten the screw on [...]
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7 Plug the telephone cord into wall socket Set the ringer volume Plug the attached 3 pin plug into the mains power socket Y our Duet 450 is now ready for use The ringer volume switch is located on the side of the handset. There are thr ee settings: HI A loud ring; your Duet 450 is preset to this position. LOW A quiet ring. OFF no ring OFF LO HI[...]
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Us i n g t h e T e le p hon e Storing and dialling numbers Y our Duet 450 Clock Telephone has three one-touch memor y buttons M1, M2 or M3. Y ou can store a fur ther 10 telephone numbers in the two-touch Quickdial memor y . Each stored number can be up to 16 digits long. Lift the handset. Press the STORE button. Dial the number you want to store us[...]
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Lift the handset. Dial the first 16 digits by pressing the M1, M2, M3 or Quickdial button under which the second par t of the number is stored. The whole number is stored automatically . Lift the handset. Press the REDIAL button. The last number called is redialled automatically . 9 Some switchboards can take a shor t time to pick up an outside lin[...]
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If your Duet 450 Clock Telephone is connected to a switchboard, the R button enables you to use the switchboards special features. Please contact your communications manager or switchboard supplier for fur ther details. The R button is also used in connection with BT Select Ser vices. For more infor mation contact BT Fre e on 152 for residential cu[...]
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11 T o set the time T o set the alarm T o stop the alarm Press and hold the CLOCK button. Press the HOUR button until the hour you want is displayed. Press the MINUTE button until the right time is displayed. Release the CLOCK button. The time is set. Press and hold the ALARM button. Press the HOUR button until the hour you want is displayed. Press[...]
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Page 12
For your own safety and convenience your Clock Telephone is fitted with a UK BSI standard 3 pin plug with 3 Amp fuse. If the fuse in the fitted mains plug should fail, replace it with a BS 1362 approved fuse rated at 3 A. Never use the plug without the fuse cover fitted. No dialling tone Make sure your telephone line cord is plugged into the phone [...]
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1 2 3 4 5 6 Should you have to replace the existing plug, use a standard (BS 1362) mains plug fitted with a 3 Amp fuse approved to BS 1362 and follow the wiring instr uctions below . The wires in this mains lead are coloured in accordance with the following code: BLUE - NEUTRAL BROWN - LIVE If the wires in the mains lead may not cor r espond with t[...]
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If you own your Duet 450 Clock T elephone - under BT’ s guarantee. BT guarantees the product for one year provided that: The goods have only been used for their intended purpose, and have not been subjected to misuse, or been wilfully or accidentally damaged. The goods have not been tampered with or repaired by anyone other than BT , its staf f o[...]
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Off ic es i n Eu ro p e , N or t h Americ a , J a pa n a nd Asia Pa cif ic . The Telecommunications ser vices described in this publication are subject to availability and may be modified from time to time. Ser vices and equipment ar e provided subject to British Telecommunications plc’s respective standard conditions of contract. Nothing in this[...]