Nortel Networks Digital Mobility Phone 7420 User Guide
Contents
1. Line 4 The types of information shown on the display are Standby text When the handset is on hook idle your extension name and number appears on the first line of the display Information text Call or feature information appears on the second line of the display Feature options Feature options appear on the third line of the display Feature options vary depending on the type of call or feature in use 13 Handset icons The following icons appear on the fourth line of the display The radio signal icon indicates connection to system Note The icon flashes when the system is busy and you will not be able to make or answer calls The envelope icon indicates a new text message MSF MAIL 4 Left and right arrow icons gt appear on the display when you access Handset option menus The telephone icon indicates a call is active Note The icon flashes when a call connection is in progress Display softkeys Three display softkeys are used to activate feature options that appear on the third line of the display The following graphic shows the softkey mapping for feature options on the third line of the display Display softkey mapping example Line 3 L ____1 Display softkeys 14 Display backlight The display backlight automatically turns on when there is an incoming call or if a key is pressed The backlight turns off after 10 seconds2. euer Jequunu e Bunejep yooq euoud nuaw 9 eunBiJ 4 gt XXXX 9681 313130 4 gt XXXX 9684 49014 48 14123200 HD ED1
3. Note Refer to the document provided with the internal voice message center for more information about mailbox options 24 More handset options Moving around in the Menu Press MENU 3 to enter or exit the menu structure It has to be used if a or CLEAR is wanted in the menu structure Press OK to jump to a lower level in the menu When the lowest menu level is reached it will store the setting and jump to a higher level It has to be used if a YES is wanted Note If the handset is in the menu and an incoming call arrives then the menu will be dropped and the call handled in the normal way See Figure 3 on page 45 Menu structure The main menu consists of the follow ing 8 menus MENU PROFILE SET UP For more information see Customiz ing handset on page 17 MENU EXT SERVICE External services are only applicable to the Master handset For more infor mation contact your system adminis trator MENU BATTERY For more information see Checking battery capacity on page 9 MENU PHONE BOOK For more information see Using phone book on page 28 25 MENU REDIAL The handset has maximum 10 redial numbers Each number is only repre sented once Press MENU press gt four times from standby text to enter the REDIAL MENU and then press OK Repeated presses at lt turn backward through the dialled numbers from newest to the oldest Right arrow moves i
4. display if the handset is turned on Checking battery capacity In the BATTERY MENU it is possible to see the remaining battery capacity For reading the correct capacity the handset has to be removed from the charger for at least one hour 1 Press MENU and use the lt gt keys to reach the BATTERY MENU 2 Press OK to enter the BATTERY MENU and see the current status of the battery capacity 3 Press OK to return to the menu system or press MENU 3 to quit The indication on the display is not necessarily an exact reflection on the remaining speech time but only an indication of the voltage on the bat tery Battery disposal Defective batteries must be returned to a collection point for chemical waste disposal Warning Nickel metal hydride batteries must be disposed of properly Do not dispose of the batteries in office or household waste Nickel metal hydride batteries are recyclable You can help preserve the environment by returning your unwanted batteries to your nearest recycling center for recycling or proper disposal Contact your system administrator for more information about battery dis posal and recycling centers in your local area 10 About your 7420 handset Message indicator light Flashes when you have a message waiting Volume control Adjusts the handset and ringer volume Q Display Shows call information handset status icons and guides you through f
5. gt Confirm with OK With auto keylock turned on the hand set will automatically lock the keys after 60 seconds Press MENU 3 then press to activate the keys again Language Choose between predefined lan guages using lt and gt Confirm with OK BACKLIGHT Can be turned on off using lt and gt Confirm with OK Refer to More handset options on page 25 for more information on the menu 19 Making and answering calls The handset must be subscribed and registered to make or answer a call Contact your system administrator to have your handset subscribed For internal calls dial the extension number Contact your system admin istrator for a list of extension num bers For external calls dial the external code or line pool code to access an external line then dial the external telephone number Contact your sys tem administrator to confirm what external code or line pool code to use Dial directly 1 Press the display icon flashes until the call is connected 2 Dial the number 3 Press s again to end the call On hook dialling pre dial 1 Dial the number A long press on will make a pause if necessary 2 Press 3 Press s again to end the call 20 Dial from your phone book 1 Press gt m to enter the telephone book 2 Search for the number either by using the lt gt keys or by pressing the first letter in the name by using th
6. the battery box 4 Insert battery with the label readable 5 Replace back cover Charging battery When charging the battery for the first time it is necessary to leave the handset in the charger for 14 16 hours for the battery to be fully charged During normal operation it takes approximately 3 5 hours to charge the handset from fully discharged to its full capacity Place the handset in the charger NORTEL For correct charging be sure the room temperature is between 0 and 25 C Do not place the handset in direct sunlight The battery has a built in heat sensor which will stop charging if the battery temperature is too high If the handset is turned off when placed in charger only the LED indicates the charging When handset is turned off the LED flashes at a low frequency while charging and lights constantly when the charging is finished There will be no reaction on incoming calls If the handset is turned on when charging the display shows the charging status The display goes back to normal mode when fully charged It will not vibrate Auto answer is inactive The handset reacts normally for incoming calls It is necessary to recharge the battery when the display shows BATTERY LOW or if the handset cannot be turned on When the battery is fully discharged up to 10 minutes may pass before charging begins display lights up When the charger begins the charging status is shown in the
7. when the handset is idle You can disable the backlight to save power refer to the Customizing handset section in this guide for more information Note The backlight is disabled when the key lock function is activated 15 Basic handset options Turning the handset ON OFF ON Press 7 When the handset is turned on the radio signal display icon is shown in the lower left corner of the display if the handset is subscribed to a sys tem OFF Press for seconds Adjusting speaker volume 1 Press s 2 Use the two keys placed at the upper right side of the handset for volume control 3 Press again Changing Menu Language There are three predefined languages in the handset English French and Spanish 1 Press MENU 3 and then press OK 2 Switch to SET PROFILE LANGUAGE using the lt gt keys then press OK 3 Use the keys to choose between the predefined languages then press OK to select the required language 4 Press MENU 3 to exit the menu structure 16 1 43 Customizing handset The handset has one user defined profile set up and a mode where all sounds are disabled SILENT Press MENU 3 followed by OK to show the profile settings have to be defined under the profile The display shows if the SILENT mode is enabled Profile set up In the following you will find a descrip tion of how to set up the p
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9. Nortel Networks Digital Mobility Phone 7420 User Guide NORTEL NETWORKS www nortelnetworks com 2004 Nortel Networks 0000635 01 Printed in Denmark Congratulations on your new Nortel 7420 handset The 7420 handset will provide you with the greatest possible degree of flexibility and mobility due to high battery capacity practi cal weight size and design Please note that the 7420 handset is for use with the following Nortel Networks host sys tems Norstar MICS 7 0 or greater Modular Integrated Communications System Norstar CICS 7 0 or greater Compact Integrated Communications System BCM 3 7 or greater Business Communication Manager STOP Charge your handset 14 16 hours prior to first use for best Contents Getting Started 5 Handset information 5 Battery information 6 Installing battery 7 Charging battery 7 Checking battery capacity 9 Battery disposal 10 About your 7420 handset 11 Handset display 13 Display softkeys 14 Display backlight 15 Basic handset options 16 Turning the handset ON OFF 16 Adjusting speaker volume 16 Changing Menu Language 16 Customizing handset 17 Making and answering calls 20 Dial directly 20 O
10. c keyboard The normal dialling keys 0 9 are used for writing the name to be placed in the telephone book By pressing the keys a certain number of times the related letters or digits will appear in the display Spaces are made by using the 0 key Key changes between uppercase and lowercase letters The arrows will move the cursor Left arrow is also used for deleting hold for 1 sec delete New letters can be inserted Change of key press and pauses last ing more than 1 second automatically moves the cursor to next position 28 Key Capital letter Small letter 1 211 7 211 amp gj amp di gt ABC2AA abce2aaaa MNOGN 00008 66g 7 PORS R pars TUV8 00 uveuuuu mnm Space 0 Space 0 95A Qe xs F EGL S lt gt gt Storing a number 1 While on hook press the number to be stored max 32 digits press and then press OK 2 Enter a name and then press OK to store the number After storing the telephone will go back to standby mode 29 3 If the display shows MEMORY FULL it is necessary to delete one or more numbers from the telephone book See Figure 5 on page 47 Storing from Redial list 1 While on hook use the key to find the number in the redial list to be stored in the telephone book 2 Press OK then gt and then press OK again 3 Ente
11. cu 41 lar installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Power Outage In the event of a power outage your cordless tele phone will not operate The cordless telephone requires electricity for oper ation You should have a telephone which does not require electricity available for use during power out ages Information to user The users man ual or instruction manual for an inten tional or unintentional radiator shall caution the user that changes or mod ifications not expressly approved by the party responsible for compliance could void the user s authority to oper ate the equipment 42 4 gt 4 HSINvdS HON3SH HSITON3 4 4 4 4 gt 4 4 lt gt 4 gt 4 ASVNONV1 MOO TASH OLN 40 100 AWN IOA 14915 H3SAASNY OLN WOLIVHSIA ANTO A3M TOA SNOL 31130 135 Las 31308 LAS 3113039 LAS 3llJOUd Las 31130 LAS 311303 Las 3130
12. e digits 2 9 3 Press s the display icon flashes until the call is connected 4 Press sw again to end the call Note For more information on using your phone book refer to Using phone book on page 28 Redial The handset has maximum 10 redial numbers Each number is only repre sented once 1 Press lt to enter the redial list You can also reach the REDIAL MENU in the main menu 2 Search for the number by using the lt gt keys Redial numbers are marked with REDIAL or name of the person who called if present in the phone book 3 Press s the display icon flashes until the call is connected 4 Press s again to end the call Note Use the Redial list or the Last Number Redial Feature 5 to automatically redial the last external telephone number that you called 21 Answering calls Depending on the system hardware software configuration Call Display information CLID for incoming exter nal calls will appear on the display Your system administrator must enable the CLID feature for your handset in system programming To answer a call Press to answer a call when your handset rings f you are using headset press any key on the handset to answer the call To stop the handset ringing without answering the call Press 21 and the ring signal is muted The display shows RINGER MUTED Alternatively press one of the volume control buttons
13. eatures and option menus Headset connector e Microphone 11 Keys F to L activate different functions when your handset is on hook or off hook On hook Handset is idle not in use Off hook Handset is active call or feature in progress F Menu key On hook Enters the Handset idle Options menu Off hook Activates a feature option active lt ac key On hook Enters the Redial List idle menu Off hook Activates a feature option active gt a key On hook Enters the Telephone idle Book menu Off hook Activates a feature option active OK On hook Turns the handset off with idle a long three second key press Off hook Turns the microphone off active or on when you are ona call o Feature key On hook Turns the display on for idle three seconds with two rapid key presses OR Starts a feature session Off hook Starts or ends a feature active session 0 R key 12 On hook Opens your message list idle with a short key press OR Enters the text message MSF MAIL menu with a long three second key press Off hook Places calls on hold active On Off hook key On hook Turns the handset on idle Off hook Ends an active call active Handset display There are four lines on your handset display Display information example JEHH 2245 4 1 PETER called 1 Line 2 HEXT CALL ERASE Line
14. essages will not automatically be overwritten but can manually be deleted Maximum 7 messages can be locked Reading a MSF mail 1 While on hook press R rz with a long key press then press OK If the message includes more than 48 letters or digits the message will run over 2 display screens 2 Use the gt key to scroll 3 To see the sender of the mail press OK 33 4 To leave the mail press MENU a Replying a MSF mail 1 While on hook press R rz to open the mail then OK press OK again and use the keys to find the reply feature press OK and you are now able to reply the mail 2 After writing your reply press OK to confirm Forwarding a MSF mail 1 While on hook press R rz to open the mail then OK press OK again and use the lt gt keys to find the forward feature press OK twice and you are now able to dial the number on the receiver 2 Press OK to confirm Deleting all MSF mails 1 While on hook press R rz to open the mail stack then OK press OK again and use the lt gt keys to find the delete feature 2 Press OK and all mails are deleted Deleting a MSF mail 1 While on hook press R rz to open the mail then OK press OK again and use the lt gt keys to find the delete feature 2 Press OK and the mail is deleted 34 Locking unlocking a MSF mail When locking a message the mes sage will not automatically be over written when receiving a
15. n hock dialling pre dial 20 Dial from your phone book 21 eR RUE RR ape 21 Answering calls 22 22 Making or answering second call 23 Mute a call 23 Replying to messages 24 More handset options 25 Moving around in the Menu 25 Using phone book 28 Using text messages MSF 32 Shortcuts 36 General information 37 Troubleshooting 37 Information 37 Getting Started Read all the information in this section before you use your handset Handset information Ensure that the adapter voltage is the same as the electrical outlet voltage The 7420 handset uses radio signals and does not guarantee a connection in all circumstances Do not rely on a cordless handset to make emer gency calls Never use your handset in the vicinity of electrical detonators in shielded rooms in areas where radio transmission is forbidden in aircraft Do not place a handset near water moisture or damp areas heat sources direct sunlight or unventilated areas devices which generate strong magnetic fields such as electrical appliances fluorescent lamps computers radios televisions or fax machines areas where the handset can be covered its ventilation impaired liquid spilled
16. n the opposite direction Note It is also possible to reach the REDIAL MENU using the lt c key Numbers are named REDIAL with the name f you want to delete a REDIAL use lt or gt to scroll to the name number and then press OK twice The name number is now deleted If the number is stored it is moved to the telephone book It is possible to add prefixes to the redial numbers Find the number you wish to edit and press the digits you want to add to the number e g prefix See also Redial on page 21 MENU MSF MAIL For more information see Replying to messages on page 24 26 MENU LOGIN For more information on this menu option contact your system adminis trator MENU MSF FUNCTION MSF Functions are special functions which are based on MSF Message Service Function The functions require special software in the main system Note The PHONE BOOK MENU REDIAL MENU and MSF MAIL MENU can be accessed directly The PHONE BOOK MENU by pressing m the REDIAL MENU by pressing lt and the MSF MAIL MENU by pressing R rz with a long key press 27 Using phone book You can store telephone numbers and names in your telephone book The telephone book can store up to 65 numbers with name A maximum of 32 digits including spaces is allowed for each number Names are sorted alphabetically starting with their first character Using the alphanumeri
17. new message If unlocked the oldest mes sage will be deleted when receiving a new message 1 While on hook press R rz to open the mail then OK press OK again and use the lt gt keys to find the lock unlock feature 2 Press OK and the mail is locked unlocked Writing a MSF mail 1 While on hook press R rz with a long key press to write a new mail confirm with OK and then write your message 2 To send the mail press OK dial the number of the receiver and then confirm with OK 3 If one or more mails are stored do as followed Press R then gt confirm with OK and then write your message Press OK dial the number of the receiver and confirm with OK The message is sent Note In case a sent message is not received the sender will get a message in the display 35 Shortcuts SILENT Press MENU followed by amp No sounds Display shows SILENT KEY LOCKED Press MENU followed by Display shows KEY LOCKED PHONE BOOK Press gt m in on hook Name search in telephone book Press the first letter in name Store a number Press gt m after the number in on hook REDIAL Press lt in on hook Check messages Short Press R in on hook MSF MAIL Long Press R rz in on hook MUTE temporarily the ringer Press OK when the telephone is ring ing Alternatively you can also press one of the volume control b
18. on the unit or objects inserted into the handset through any openings areas with dust vibration shock or temperature extremes Check for small metal objects in the handset earpiece mouthpiece before using the handset Do not store or locate flammable liq uids gases or explosive materials in the same compartment or vicinity as the cordless handset its parts or accessories Battery information Read the following information before you handle the batteries Do not replace the batteries in potentially explosive environments such as rooms where flammable liquids or gases are present The battery will explode if disposed of in a fire Do not charge the batteries unless you use the Nortel Networks approved charger and the proper batteries Only use battery type NT7B65LD in the 7420 handset Do not use these batteries with other products These batteries were designed specifically for use with the 7420 handset and the 7420 charger ONLY Improper use of the batteries may result in fire hazard Do not do anything that would cause the battery to short circuit Do not let the battery or the charger come into contact with conductive metal objects Installing battery The battery is connected to the hand set when it is shipped from the fac tory 1 To change the battery press down the back cover and push it 5 mm towards the headset plug 2 Lift off back cover 3 Place the battery plug in the slot in
19. ons including those marked on the product 3 Unplug this product before clean ing Do not use liquid cleaners or aerosol cleaners Use damp cloth for cleaning 4 Do not install the telephone equip ment in the bathroom or near a wash bowl kitchen sink or laundry tub in a wet basement or near a swimming pool 5 Slots or openings in the equipment are provided for ventilation to pro tect it from over heating These openings must not be blocked or covered 6 The product should be operated only from the type of power source indicated on the instructions If you are not sure of the type of power supply consult your dealer or local power company 7 Do not overload wall outlets and extension cords as this can result in fire or electrical shock 8 Never push objects of any kind into this product through cabinet slots as they may touch dangerous voltage points or short out parts that could result in fire electrical shock or injury Never spill liquid of any kind into this product 9 To reduce the risk of electrical shock or burns do not disassem ble this product Opening or removing covers may expose you to dangerous voltages dangerous electrical current or other risks Incorrect reassemble can cause 38 electrical shock when the appli ance is subsequently used If the product need repair consult your dealer 10 Refer servicing to qualified service personnel 11 Avoid using telephone during an electrical
20. overheat and cause burns or fire 3 Do not open or mutilate the batter ies released electrolyte is corro Sive and may cause damage to the eyes or skin The electrolyte may be toxic of swallowed 4 During charging batteries heat up This is normal and not dangerous 5 Do not use non Nortel charging devices This could damage the batteries Notices Before installing this equipment users should ensure that it is permis sible to be connected to the facilities of the local telecommunications com pany The equipment must also be installed using an acceptable method of connection The customer should be aware that compliance with the above conditions may not prevent degradation of service in some situa tions Repairs to certified equipment should be coordinated by a representative designated by the supplier Any repairs or alterations made by the user to this equipment or equipment malfunctions may give the telecom munications company cause to request the user to disconnect the equipment Users should ensure for their own protection that the electrical ground connections of the power utility tele phone lines and internal metallic water pipe system if present are 40 connected together This precaution may be particularly important in rural areas CAUTIONS Users should not attempt to make such connections themselves but should contact the appropriate electric inspection author ity or electrician as ap
21. propriate If your telephone equipment causes harm to the telephone network the telephone company may ask you to disconnect the system from the line until the problem has been corrected or they may discontinue your service temporarily If possible they will notify you in advance But if advance notice is not practical you should be notified as soon as possible You will be informed of your right to file a com plaint with the FCC Your telephone company may make changes in its facilities equipment operations or procedures that could affect the proper functioning of your telephone system If they do and it is possible you will be notified in advance to give you an opportunity to maintain uninterrupted telephone ser vice If you experience trouble with this telephone system disconnect it from the network until the problem has been corrected or until you are sure that the equipment is not mal functioning Note This equipment has been tested and found to comply with the limits for a class B digital device pur suant to local regulations These lim its are designed to provide reasonable protection against harmful interference in a residential installa tion This equipment generates uses and can radiate radio frequency energy and if not installed and used in accordance with the instructions may cause harmful interference to radio communications However there is no guarantee that interference will not occur in a parti
22. r a name and then press OK to store the redial list number in the telephone book Storing number from last caller While on hook press to store a number from last caller then OK then press gt then OK to confirm Reading BOOK numbers 1 While on hook press gt m to enter the telephone book 2 For quick search press the first letter of the name using 2 9 Refer to Using the alphanumeric keyboard on page 28 3 Press 97 to call the displayed person It is also possible to reach the PHONE BOOK MENU from the main menu 30 4 Press MENU to exit the telephone book Note Viewing and editing the telephone book can also be done while in conversation off hook by pressing gt m with a long key press See Figure 6 on page 48 Changing numbers 1 While on hook press gt m to enter the telephone book 2 Use the lt gt keys to find the number to be edited press OK press gt then press OK 3 Edit the number and then press OK to store the number Note Viewing and editing the telephone book can also be done while in conversation off hook by pressing gt m with a long key press See Figure 6 on page 48 Changing Redial number 1 While on hook press lt c use the lt gt keys to find the redial number to be edited and press the digits you want to add to the number e g prefix 2 Press OK followed by gt enter a name and then press OK again to store
23. rofile 1 Press MENU 3 to enter the PROFILE SET UP MENU 2 Press OK You are now able to switch between the different settings using lt or gt 3 Press OK when you find the setting you wish to change or see 4 Change the setting according to your needs confirm with OK and you automatically go to the next setting 5 Press MENU to finalize profile setup See Figure 2 on page 44 17 Description of profile functions RINGERTONE Scroll through the 9 different ringer tones using lt and gt Confirm with OK RINGER VOL Turn the volume up and down using or gt Confirm with OK KEY CLICK Turn the volume up and down using and Confirm with OK VIBRATOR Can be turned on off using lt and gt Confirm with OK Auto ANSWER Can be turned on off using lt and gt Confirm with OK When turned on the telephone auto matically goes off hook when ringing START VOL Start volume can be adjusted using lt and gt Confirm with OK OUT OF RANGE The out of range indication can be turned on off using lt and gt Confirm with OK With the out of range indicator turned on a beep will appear when the tele phone is moving out of range of the base station and OUT OF RANGE will appear in the display If on a call when out of range the call will be transferred to the prime set 18 AUTO KEYLOCK The auto keylock function can be turned on off using lt and
24. storm There be a risk of electrical shock from light ning 12 Do not use the telephone to report a gas leak in the vicinity of the leak 13 Do not place the base or charger near microwave ovens radio equipment or non ground connected televisions These appliances may cause electrical interference to the base or handset 14 The charger must be placed on a hard flat surface and connected to a functional 120 volt AC power source depending on the country of use 15 This telephone will not operate in the event of a blackout Please keep a backup phone for emer gencies Intrinsic safety Do not use the handset in conditions where there is a danger of electrically ignited explosions Exposure to sunlight heat and moisture Do not expose the cordless phone to direct sunlight for long periods Keep the cordless phone away from exces sive heat and moisture Spare parts and accessories Use only approved spare parts and accessories The operation of non approved parts cannot be guar anteed and may even cause damage Power failure In the event of a power failure or flat battery you cannot use the handset 39 to make or receive calls Battery Precautions 1 Periodically clean the charge con tacts on both the charger and handset 2 Exercise care in handling batteries in order not to short the batteries with conducting materials such as rings bracelets and keys The batteries or conducting material may
25. the number Deleting numbers 1 While on hook press gt m to enter the telephone book 2 Use the gt keys to find the number to be deleted press OK twice 31 See Figure 6 on 48 Deleting from Redial list While on hook press lt c then use the lt gt keys to find the name number to be deleted and press OK twice The name number is now deleted If number is stored it is moved to the telephone book Using text messages MSF It is possible to send text messages from handset to handset on the same system See Figure 4 on page 46 At the reception of a text message the envelope display icon appears The envelope display icon is indicating one or more unread messages or unanswered calls 32 The text message is shown in the display and when the message is read the envelope display icon will disappear If the message contains a callback number this will be displayed on the bottom line of the display As long as the callback number is in the display it is possible to activate the number by pressing 7 1st letter in the display in front of the timestamp shows the message status read R unread N or locked L Mails include a maximum of 96 letters or digits 2 display screens of 48 each Call back no is max 32 digits or letters for E mail 14 messages can be stored in the handset When receiving a new message the oldest unlocked will be deleted Locked m
26. to mute the ringing signal Hold a call 1 While on a call press R rz 2 To retrieve the held call press R again 22 Making or answering a second call You can have two calls active at the same time Use R rz to switch between calls To answer a second call while on another call Press rz to answer the second call The first call is automatically put on hold To hold a call and make a second call 1 Press R to put the first call on hold 2 Dial the telephone number of the second call To return to the first call Press R rz again to return to the first call The second call is automatically put on hold Mute a call 1 While on a call press 2 To cancel mute press again 23 Replying to messages This allows you to read messages from another DN Directory Number in the system or to listen to voice mail messages The red LED on your handset flashes when you receive a message from an internal voice message center or another telephone on your system This is the message waiting indica tion To view reply and listen to your messages 1 While on hook press R rz short key press to access your message list 2 Press to view all messages in the list Note The HEXT softkey only appears on the display when you have more than one message 3 Press CALL to reply to a message in the list 4 Press ERASE to delete a message from the list
27. uttons to mute the ringing signal MUTE the microphone Press OK when the telephone is off hook RECALL Press Pause Hold for one second only for on hook dialling pre dial 36 General information Troubleshooting The telephone freezes Remove and replace the battery pack Press to turn on the telephone The telephone does not ring Check whether the ringer is SILENT or RINGER VOL is OFF Not possible to turn on the telephone Check if battery is connected If yes charge the battery The telephone turn off when receiving a call and going off hook Charge the battery If still a problem change the battery as it might be defective Information Error information Improper function of the handset might be related to the installation of the DMC system or failures related to the main system Before declaring a handset for repair be sure that the main system is oper ating properly Technical specification Size and weight Size 143 x 48 x 26 mm Weight 121 g incl battery x 10 g Capacity Active talking time 12 hours Stand by time 120 hours 37 Important Safety Instructions and Product Information Before using your telephone equip ment you should always follow basic safety instruction to reduce the risk of fire electrical shock and injury to per sons and damage to property 1 Read and understand all instruc tions 2 Follow all warnings and instruc ti
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Nortel Networks Digital Mobility Phone 7420 User Guide