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2550 Video Phone User Manual IMT

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You can press “Exit” to remove the message from LCD display, or press “View”
to see detailed information about missed calls:

You can use following keys to view missed call records:

Up / Down key: Select record.
Exit: Quit missed call record and back to “Call Records” menu.
Dial: Dial selected phone number.
Next / Previous: Move to next or previous page of missed call record
Detail: View detailed information about selected call. If you pressed “Detail” key
in missed call menu, you will see following information displayed on LCD

03:00 01/01/2007

2550 1101

Exit

Missed Calls

You have 1 missed calls

View

03:00 01/01/2007

2550 1101

Missed Calls

Albert H.

1102

Unknown

1103

Exit

Detail

Dial

Next

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Summary of Contents for 2550

Page 1: ...2550 Video Phone User Manual IMT Page 1 VOBX 2550 Video Phone 1 0 Singapore COVER PAGE ...

Page 2: ... and Making Phone Calls 2 8 Holding and Transferring a Call 2 9 Auto Call Forwarding 2 10 Auto Call Rejection DND Function 2 11 Call Waiting 2 12 Adjust Ringer Handset Speakerphone Volume 2 13 Select Default Audio Codec Chapter III Advanced Operating Techniques 3 1 Address Book Management 3 2 View Call Records 3 3 Personalize Change Ringer Type 3 4 Personalize Change Screen Saver 3 5 Change Video ...

Page 3: ...ou start using this phone please check the contents in the product package first If any item listed in the table below is missing please contact your dealer of purchase 1 2550 Video IP Phone Main Body 1 pcs 2 Handset 1 pcs Handset Cable 1 pcs A C Power Adapter 1 pcs Socket Adapter 1 pcs CAT6 Ethernet Cable 1 pcs ...

Page 4: ...sure that the phone is properly secured Falling down from high places will damage this phone 5 Do not drag any connected cord with force the terminal and cord will be damaged 6 Only use dry cloth with water to clean this phone do not use alcohol or other chemical solution to clean this phone 7 There s no user serviceable part inside this phone if the phone is not working properly please contact th...

Page 5: ... firmware to enjoy new functions in the future without buying a new phone Supports various network configuration methods Including static IP DHCP and PPPoE You can personalize your phone with your favorite ring tone and screensaver Compatible with most of IP phones with video or without video capability also works with PC PDA based software IP phone Lens cap for security Easy to use 5 way control ...

Page 6: ...CD Display 4 Video Camera 5 Camera Lid 6 Soft Key 1 to 6 7 Numeric Keypad 8 Brightness Up 9 Brightness Down 10 Redial Key 11 TV Out Switch 12 Mute Key 13 Camera Key 14 Headset Key 15 Speaker Key 16 Up Key 17 Down Key 18 Left Key 19 Right Key 20 OK Key 21 Volume Down 22 Volume Up 23 Speaker 24 Hook 25 Soft Key A to E Located on the right of LCD display ...

Page 7: ...age 7 Left Right Side Top View Left View Top View Item No Description Item No Description A Handset Jack B Headset Jack C Power Jack D Audio Output Right E Audio Output Left F Video Output G USB Jack H Network Jack LAN I Network Jack PC ...

Page 8: ...he following instructions to install your new 2550 IP phone 1 Unpack the package and check if there s anything missing 2 Insert the handset cord to the handset as shown on the picture 3 Insert the other end of handset to the handset jack A and put the handset on the phone ...

Page 9: ... this phone 6 Build the connection between your TV set and this video phone by A V cable sold separately A V cable is color coded yellow for video white for left audio channel and red for right audio channel please connect this IP phone and your TV set s A V connector according to the color shown on the A V cable You can skip this step if you don t want to use TV with this phone 7 Insert the power...

Page 10: ...own on the picture 9 Insert the A C adapter to the power outlet socket on the wall 10 Please check the LCD display of this IP phone there should be something displayed on the LCD in 1 or 2 minutes If not please re check all procedures listed in this section or contact your dealer of purchase for help ...

Page 11: ...he function of soft key in every menu will be displayed on the corresponding area of LCD display For example there are 5 soft keys available on main menu If you want to execute Redial function just press the second soft key from the left There are also 5 soft keys located on the right side of LCD display you can use them just like the soft keys below the LCD display 03 00 01 01 2007 2550 1101 Rece...

Page 12: ...is key again to deactivate TV out function Mute Key 12 Press this key to activate mute function When mute is activated remote party will not hear anything from you Mute key will be illuminated when mute function is activated press this key again to deactivate mute function Camera Key 13 Press this key to switch built in camera on off You can switch camera on or off during a call so remote party wi...

Page 13: ...to select the item you want OK 20 key Press this key to make affirmative answer to a question or enter a submenu Volume Down 21 and Volume Up 22 You can adjust the volume of ring tone directly by these 2 keys when the phone is not in use and you can adjust the volume of handset headset speakerphone when they are in use Using 5 way Joystick There is a special set of keys on this phone keys 21 to 25...

Page 14: ...o previous menu press Exit or Back soft key Return From Screen Saver To protect the LCD display panel a built in screen saver will be activated after a certain period of time You ll see several color pictures displayed alternately To return to normal state simply press any key on the phone and the key you pressed will not function when screen saver is activated 03 00 01 01 2007 2550 1101 Main Menu...

Page 15: ...igurations LAN Configuration 2 Please use up down key to select the setup item you wish to set then press OK key You can press Next key to jump to next page for more setup items and press Previous to back to first page Device Name 03 00 01 01 2007 2550 1101 LAN Configuration Device Name MAC Address DHCP IP Address DNS Server Exit Select Back 03 00 01 01 2007 2550 1101 LAN Configuration Time Zone S...

Page 16: ...he MAC address of your 2550 video phone Hint How to input number and alphabet Every number key in numeric keypad area represents a set of number and or alphabet You can press a key repeatedly to select next character for that key For example you can press 2 key for 3 times repeatedly to get c and press 5 key for 5 times to get J If you pause between keystrokes a character will be entered into fiel...

Page 17: ...configured to use DHCP the following message will appear Please press OK or Cancel to exit If you wish to deactivate DHCP function please following the instructions given in IP address section to input IP address manually and DHCP function will be disabled The following message indicates that DHCP function is currently disabled 03 00 01 01 2007 2550 1101 LAN Configuration Time Zone Setting Day Lig...

Page 18: ...ssage will appear Please input correct admin password default value is 123456 and then press Save key This phone will reboot after you pressed Save key please wait for few minutes until reboot procedure is complete 03 00 01 01 2007 2550 1101 LAN Configuration Time Zone Setting Day Light Saving Enabled Synchronization Date Format Cancel Admin Password System Is Going To Reboot Save Delete ...

Page 19: ... to set and input the setting information by numeric keypad press key for dot to erase a character press Delete key to save new device name press Save key Or you can press Cancel key to keep original IP address information name unchanged After you pressed Save key you ll be prompted to setup DNS server address 03 00 01 01 2007 2550 1101 IP Address Subnet Mask Default Gateway 192 168 1 25 255 255 2...

Page 20: ...You can press Delete to remove an inputted character Press Save key to keep changes or press Exit to keep original settings After you pressed Save key you ll be prompted to input admin password Input correct admin password default value is 123456 and press Save to reboot the phone or press Cancel to abort 03 00 01 01 2007 2550 1101 Primary DNS Secondary DNS 192 168 1 253 Save 192 168 1 254 Exit De...

Page 21: ...TFTP server by selecting this item Press Cancel key to back to previous menu PPPoE This phone supports PPPoE PPP over Ethernet protocol if your Internet service provider requires you to connect to Internet by PPPoE you can use this function to establish Internet connection If PPPoE is not configured currently the following message will appear to ask you if you want to enable and setup PPPoE 03 00 ...

Page 22: ...r you inputted user name or password please press OK key again to quit text input mode the text input bar at the bottom of display will appear then press Save key to save current settings If you changed your mind and want to keep PPPoE settings untouched please press Exit 03 00 01 01 2007 2550 1101 LAN Configuration Time Zone Setting Day Light Saving Enabled Synchronization Date Format Cancel PPPO...

Page 23: ...dmin password Input correct admin password default value is 123456 and press Save to reboot the phone or press Cancel to abort 03 00 01 01 2007 2550 1101 LAN Configuration Time Zone Setting Day Light Saving Enabled Synchronization Date Format Cancel Admin Password System Is Going To Reboot Save Delete ...

Page 24: ... then use your web browser ex Internet explorer to connect that IP address and follow the following instructions After connected to IP phone input username and password and click Login to continue Default username and password Username 2550 Password 123456 Click Basic Setting link on the left then click LAN Configuration To check the IP address please go to Menu Settings Device Configurations IP A...

Page 25: ...on t have one just left it blank Static IP Use static IP mode Please input IP address subnet mask and default gateway here DHCP Use DHCP obtain IP address information from server automatically PPPoE Use PPPoE mode Please input username and password and select authentication type here ISP name is optional DNS Server Please input the IP address not host name of DNS server here At least one DNS serve...

Page 26: ...and OK key to go Setting Device Configurations SIP Configurations 2 Please use up down left and right key to move cursor to the setup item you wish to set then input value by numeric keypad You can press Delete key to erase existed characters After all required values are entered please press Save key to save change 03 00 01 01 2007 2550 1101 SIP Configurations SIP Registration SIP Proxy Server Ex...

Page 27: ...ess Save key The phone will reboot and changes will take effect after reboot procedure is complete After you pressed Save key the following message will appear The phone is not re configuring please wait for 10 to 15 seconds 03 00 01 01 2007 2550 1101 SIP Registration Phone Number Authentication User SIP Register Server Password ms Exit Delete Save 1101 192 168 1 2 1101 Admin Password System Is Go...

Page 28: ... setup SIP proxy server You can check current SIP proxy server setting by selecting SIP Proxy Server in step 1 Please ask your service provider or network administrator to know if you need SIP proxy server or not 03 00 01 01 2007 2550 1101 SIP Configurations Time Zone Setting Day Light Saving Enabled Synchronization Date Format Cancel SIP Proxy Server None ...

Page 29: ...server then click Apply button to save changes If the use of SIP proxy server and STUN server is required in your LAN or requested by service provider please click Advance Settings link on the left and then click SIP Settings All advanced settings about SIP proxy server and STUN server can be found here Please fill all fields in this page and then click Apply button to save changes Note If you don...

Page 30: ... Time Settings 2 There are four options here as shown on LCD display You can change time zone setting in Time Zone Setting Each page has 4 time zones you can press Up and Down key to select time zone and if the time zone is not displayed press Previous and Next key to switch to previous or next page then press OK or Select key to save setting to abort press Cancel key 03 00 01 01 2007 2550 1101 In...

Page 31: ... and or time is incorrect you can force the phone to get date and time from time server again To do so simply select Synchronization item then press Yes button 03 00 01 01 2007 2550 1101 Time Settings Time Zone Setting Day Light Saving Enabled Synchronization Date Format Cancel Enable Disable Select 03 00 01 01 2007 2550 1101 Time Settings Time Zone Setting Day Light Saving Enabled Synchronization...

Page 32: ... you can use this setting However if you wish to use your own time server please select NTP Server and input the NTP server address then press Save to use new NTP server 03 00 01 01 2007 2550 1101 Time Settings Time Zone Setting Day Light Saving Enabled Synchronization Date Format Cancel Yes hh mm mm dd yy AM hh mm mm dd yy mm dd hh mm ss mm dd AM hh mm ss Hint The character in date time format re...

Page 33: ... SIP settings and make sure that VoIP server is reachable by the network you connected to If you see this icon on the left of LCD display the connection between the phone and network is lost Please re check or re build the network connection until this icon is disappeared To accept phone call When someone s calling you ll hear ring tone and see the following message displayed on LCD display and th...

Page 34: ... don t want to accept the call you can press Reject key or you can just ignore it until the ring stops by itself After you answered the call the following information will be displayed on LCD display The name and phone number of remote party will be displayed and a timer will start counting until the call is ended If no one answers the call the number of missed calls will be displayed on LCD displ...

Page 35: ...ed call record and back to Call Records menu Dial Dial selected phone number Next Previous Move to next or previous page of missed call record Detail View detailed information about selected call If you pressed Detail key in missed call menu you will see following information displayed on LCD 03 00 01 01 2007 2550 1101 Exit Missed Calls You have 1 missed calls View 03 00 01 01 2007 2550 1101 Misse...

Page 36: ... you can use these keys in this menu Exit Back to previous menu Dial Dial the number of remote party Delete Delete this call record When you press this key a message window will appear on LCD display and ask for confirmation You can press Yes key to confirm or press Cancel key to abort 03 00 01 01 2007 2550 1101 Call Detail Albert H 1102 00 42 40 01 01 2007 00 00 00 Exit Dial Delete ...

Page 37: ...ee following message displayed on LCD display Please dial the phone number you want to reach now and wait for the call to be connected You can append a key after the number you dial this will shorten the time you need to wait You ll hear ringback tone while this phone is contacting remote party and see the following message displayed on LCD display 03 00 01 01 2007 2550 1101 Cancel Save Delete Red...

Page 38: ...dial Redial last dialed phone number automatically Dial After any number is entered the second softkey will become Dial You can press this key after all number has been entered this will shorten the time you need to wait Delete Remove a dialed number Save Save the phone number you just entered to address book After you pressed Save key you ll see following message displayed on LCD display You will...

Page 39: ... the call you ll see following message displayed on LCD display There are 2 video display areas on LCD display Area A displays the image of remote party and area B displays the image of you If remote party does not support video nothing will be displayed in area A if you switched video off nothing will be displayed in area B When both remote party and you switch video off do not support video the ...

Page 40: ...Refer to chapter 3 1 for detailed information Video On Off Start or stop sending video When remote party does not support video or network is slow you can switch video off to save bandwidth which will improve audio quality Mute Switch the microphone off remote party will not hear anything from you to resume press Mute key again Camera Switch the camera on your phone on or off Headset Switch to hea...

Page 41: ...displayed on LCD display Please re check the phone number again or try again later Press Exit key to remove the message 03 00 01 01 2007 2550 1101 Cancel Call Failed Albert H 1103 Hint If your 2550 video phone is connected to TV you can press TV OUT key to display the image of LCD display on television Please note that nothing will be displayed on LCD display when you re using TV Out function and ...

Page 42: ...ing hold remote party will not hear anything from you and you can use these keys during hold Disconn Ends the call Transfer Transfer the call to another number see below Resume Resume the call cancel hold Addr Book Go to address book menu refer to chapter 3 1 for detailed information 2nd line Make an outgoing phone call to another number and keep remote party on hold until the second call ends see...

Page 43: ...ious menu If you press 2nd line key the following message will be displayed on LCD display You can make outgoing phone call to a new phone number here and the remote party will be still on hold After you entered the phone number press Dial key You can press Delete key to remove a number or press Cancel to abort and return to previous menu When the second call end you ll back to hold menu 03 00 01 ...

Page 44: ...conditional forwarding Forwards every phone call to another phone number regardless the state of this phone b No answer forwarding Only forwards incoming phone call to another phone number when no one answers the phone c Busy forwarding Only forwards incoming phone call to another phone number when the phone is in use Please select the forwarding type you wish to use by up down key and press OK ke...

Page 45: ...ich means if no one answer the call within 30 seconds no answer forwarding function will be activated You can change this setting by following procedures Press Main Menu key to enter main menu then use up down key and OK key to go Setting Phone Settings Ringing Timeout then press OK key Please press Delete key to remove numbers and input a new timeout setting by numeric keypad then press Save key ...

Page 46: ...ollowing instructions Press Main Menu key to enter main menu then use up down key and OK key to go Setting Phone Settings Do Not Disturb you ll be prompted to select Enable or Disable DND mode Press up down key to make choice and press OK or Select to save change or press Cancel to abort and back to previous menu Hint It s not recommended to switch the phone off or disconnect network cable if you ...

Page 47: ... can also decide to use this function or not Press Main Menu key to enter main menu then use up down key and OK key to go Setting Phone Settings Call Waiting you ll be prompted to select Enable or Disable call waiting Press up down key to make choice and press Select to save change or press Cancel to abort and back to previous menu 03 00 01 01 2007 2550 1101 Phone Settings Call Waiting Cancel Sele...

Page 48: ... following message displayed on LCD display Please press volume up down key to adjust volume and press OK key to accept new volume setting or press Cancel to keep volume setting untouched You can also change volume setting in audio preferences menu Press Main Menu key to enter main menu then use up down key and OK key to go Setting Initial Setup Audio Preference 03 00 01 01 2007 2550 1101 Call Wai...

Page 49: ...key You can adjust the volume by left right key key or volume up down key Remember to press OK key to save change or press Cancel key to keep volume setting untouched 03 00 01 01 2007 2550 1101 Audio Preference Ring Tone Handset Volume Headset Volume Speaker Volume Audio Codec Priority Exit Select Back ...

Page 50: ...ok key to enter Settings Initial Setup Audio Preference then select Audio Codec Priority 2 Please select the audio code you wish to set as highest priority will be used first then press Select key If you wish to keep original setting untouched please press Exit or Back key 03 00 01 01 2007 2550 1101 Audio Preference Ring Tone Handset Volume Handset Volume Speaker Volume Audio Codec Priority Exit S...

Page 51: ...n press OK key when Address Book is selected You can press these keys in address book Exit Leave address book and back to main menu Dial Dial selected address book item Next Previous Move to next previous page Menu Add edit or delete an address book item See below Go To Search for a user name When you press Menu key you ll be prompted to select add edit or delete 03 00 01 01 2007 2550 1101 Address...

Page 52: ...Press left right key to choose sex of this person Name Press number keys 0 to 9 to input the name of this person Number Press number keys 0 to 9 to input the phone number of this person You can press Delete key to remove a character or number and press Save key when you finish You can also press Cancel key to return to previous menu 03 00 01 01 2007 2550 1101 Add New Entry Sex Name Number Exit Sav...

Page 53: ...You ll be prompted to modify the information of selected address book item press Save to save changes or press Exit to keep selected item untouched Delete You can delete an unwanted address book item by this function To do so please use up down key to select an address book item first and then press Menu Delete You ll be prompted to confirm delete press Yes to confirm or Cancel to abort ...

Page 54: ...he record of all outgoing phone calls c Missed calls The record of all missed calls Please use up down key to select the type of call record you wish to view and press OK key And you can use these keys in call record Exit Leave call record and back to previous menu Dial Dial selected call record Next Previous Jump to next previous page Detail View the detailed information about selected call recor...

Page 55: ...nger tone Press Main Menu key to enter main menu then use up down key and OK key to go Setting Personalize Ring Type Please use up down key to select a ringer tone you can press Play key to preview the ringer tone you selected then press Select to save change or you can press Exit to abort 03 00 01 01 2007 2550 1101 Ring Type Chime 1 Chime 2 Chime 3 Chime 4 Exit Select Play Back ...

Page 56: ...screen saver you can press Preview key to preview the screen saver you selected during preview you can press Cancel to return to screen saver menu then press Select to save change or you can press Exit to abort You can also change the time to wait before screen saver is activated or just shutdown the LCD display to save energy Press Main Menu key to enter main menu then use up down key and OK key ...

Page 57: ...s and input a new timeout setting by numeric keypad then press Save key to save changes If you don t want to deactivate screen saver you can input 0 Please note that valid wait time is from 3 to 999 minutes you can t input a number less than 3 here 03 00 01 01 2007 2550 1101 Phone Settings Chime 1 Chime 2 Chime 3 Chime 4 Exit Save Delete Screen Saver LCD OFF Min 3 ...

Page 58: ... they are Brightness and Contrast Please select the item you wish to set and press left right key or key to adjust You can see the change on LCD display when you press the key when you re satisfied with new brightness or contrast setting press OK key or press Cancel key to keep original setting Video Quality You can adjust the quality of sending image here there are 3 options Low Quality Standard ...

Page 59: ...press Back or Exit to keep original setting Please note that the phone will reboot when a new video resolution setting is made Camera Frequency If you re using fluorescent light in the room you may need to adjust camera frequency or the image could be flashing There are 3 options Auto 50 Hz and 60 Hz In most cases you can select Auto or you can select a proper setting according to the frequency of...

Page 60: ...can select the video output format of this phone PAL or NTSC IF you re using this phone in China please select PAL if you re using this phone in Taiwan United States or Japan please select NTSC 03 00 01 01 2007 2550 1101 TV Output Format PAL NTSC Exit Select Back ...

Page 61: ... the following instructions Press Main Menu key to enter main menu then use up down key and OK key to go Setting Initial Setup Language Settings Please use up down key to select a language from language list and press Select to save change or press Exit to leave language setting untouched 03 00 01 01 2007 2550 1101 Language Setting English Simplified Chinese Exit Select Back ...

Page 62: ...nternal web service and you can also enable disable web access by pressing up down key and press Select to save change or press Cancel to abort and back to previous menu b Model Information The model number of this phone will be displayed press Cancel or OK key to back to previous menu c Model Version The version number of internal firmware will be displayed press Cancel or OK key to back to previ...

Page 63: ...go Setting Phone Settings Video Privacy you ll be prompted to select Enable or Disable camera Press up down key to make choice and press Select to save change or press Cancel to abort and back to previous menu Please note that the phone will reboot if the setting is changed 03 00 01 01 2007 2550 1101 Phone Settings Cancel Select Enable Disable Hint If you just want to disable camera for a while yo...

Page 64: ...it to get many kinds of information from internet Please click SNDT key in this phone s main menu and connect to our webpage The location of SNDT key After web browser has been started the following menu will be shown 03 00 01 01 2007 2550 1101 Shutdown SNDT Redial Recent Main Menu Back Forward Stop Home Refresh Quit ...

Page 65: ...k key to back to previous page you can use this key to proceed to next page However if you never used Back key nothing will happen when you press this key Stop Press this key to stop downloading webpage Refresh Download current webpage again If you found that some contents are not displayed in current webpage you can press Refresh button to download webpage again Quit Quit web browser and back to ...

Page 66: ...d by a movable square like The picture shown above indicates that is selected currently and you can press right key to select item By using direction keys you can select every item on webpage If the item you wish to select is not displayed you can use direction keys to move the webpage so the contents not currently shown on display will appear When you want to select a certain item in current webp...

Page 67: ...hange and you can use right down key to select item in downward direction or use up left key to select item in upward direction When the item in dropdown menu is selected press OK key How to click a button Move the square to the button you wish to click and then press OK key How to input text When you move the square to text entry box please click OK key to start to input text A text entry bar wil...

Page 68: ...and the corresponding alphabet and number will be shown the following picture shows the choices you ll have after 2 has been pressed You can use left right key to select the character you wish to input and then press OK to input the character you selected If you selected wrong character you can press DELETE key to remove it to return to previous step If you wish to input Chinese characters press A...

Page 69: ...eed to select more than one alphabet and all matching Chinese characters will appear You can press DELETE key to back to previous step You can use left right key to select the Chinese character you wish to input When an arrow appears at the leftmost or rightmost position of all candidates you can press left right key repeatedly so the character selector moves toward the arrow and when selector rea...

Page 70: ...will enter number input mode You can press number keys to input numbers directly You may noticed that an underline will appear under the text you inputted when you finished with text input you can press OK key again don t press any number keys to quit text input mode and the underline under the text will appear DELETE 123 A ...

Page 71: ...own procedure is required to keep this phone working properly When you need to remove the power from the phone please press Shutdown key in main menu You ll be prompted to confirm shutdown Press Yes to start shutdown procedure or press Cancel to abort 03 00 01 01 2007 2550 1101 Shutdown SNDT Redial Recent Main Menu 03 00 01 01 2007 2550 1101 Cancel System Shut Down Yes ...

Page 72: ...in after about 10 seconds Press SPEAKER or HEADSET button on the phone or lift handset If you can hear dial tone please return this IP phone to your dealer Press key once make sure the phone is not in TV OUT mode If you just tried to upgrade firmware and you see malformed text displayed on LCD display contact your dealer for assistance If the problem can not be solved by solutions listed above ple...

Page 73: ...ner of LCD display the phone is not registered to VoIP server Please re check SIP setting of this phone and make sure VoIP server is reachable by the network you connected to Please contact your VoIP service provider and or ISP to ask for service availability Please contact your dealer of purchase if this problem can not be solved by solutions listed above I can not see my image remote party can n...

Page 74: ...sh V Powering system External Power Adapter 12V 1 25A Switching Display LCD Display 7 TFT LCD CMOS module 300K pixels QVGA 30fps V Camera Camera door V CCITT Keys 12 Speaker phone Key V Headset Key V Camera On Off key V Mute Key V Volume Up Down keys V 4 way Navigation with central select key V LCD TV display toggle key V Picture in picture enable key V LCD Brightness Up Down Keys V Speed dial But...

Page 75: ...quipment 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 particular installation If this equipment does cause harmful interference to radio or television reception which can be determined by turning the eq...

Page 76: ...e instructions Connect to your 2550 VoIP phone by the web browser on your computer enter username and password and press Login to login Click Basic Settings link on the left then click LAN Configuration Note A failed upgrade attempt may cause phone malfunction if this happens please contact your dealer of purchase to ask for help ...

Page 77: ...ect to your 2550 VoIP phone by the web browser again click Firmware Update link on the left then check Update With Latest Firmware Version box and press Apply Note Do not remove network cable or power adapter during upgrade or firmware upgrade may fail and cause malfunction After the firmware is upgraded the phone will reboot You can refer to the instructions given in chapter 3 7 to check the new ...

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