Denwa Communications DW-820 Скачать руководство пользователя страница 107

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Mode 1: Press Speaker button or pick up to enter the dialing interface, click

on upper right corner, check Account Manager.

Mode 2: Slide down the top-left

, click the account, enter the setup interface,

check Account Manager.

7.4

Backup & Reset

Mode 1: In the main screen, press "Menu" key on the hard keyboard-> System

Settings-> Backup & reset

Mode 2: In the main screen, click

-> Backup & reset

Click “Factory data reset”, click “Reset Multimedia Terminal”, then the phone will

restore to factory settings.

7.5

Failure Process

Failure 1: Power LED is off

Содержание DW-820

Страница 1: ...1...

Страница 2: ...4 Startup And Shutdown 17 4 1 5 View Turn Off Notifications 18 4 2 Connecting To Network And Wi Fi 18 4 2 1 Configuring Static IP 19 4 2 2 Configuring DHCP 20 4 2 3 Configuring PPPOE 21 4 2 4 Configu...

Страница 3: ...13 1 Wallpaper 46 4 13 2 Widgets 47 4 13 3 Shortcuts 49 4 13 4 Modify Extended Bar 50 4 13 5 Ringtone 50 4 14 Backup Reset 51 5 Function 52 5 1 Call Function 52 5 1 1 Make A Call 52 5 1 2 Dial Out Fr...

Страница 4: ...With A Bluetooth Device 84 5 16 4 Un pairing A Bluetooth Device 85 5 17 USB 85 5 18 Calendar 86 5 18 1 Add An Account 86 5 18 2 View Calendar 87 5 18 3 New Activities 87 5 18 4 Edit Activities 88 5 1...

Страница 5: ...tatus Basic 111 8 3 Account Basic 113 8 4 Account Advanced 115 8 5 Network Advanced 118 8 6 Phone Call Feature 119 8 7 Phone Audio 122 8 8 Phone Video 123 8 9 Phone Ext Key 124 8 10 Phone Replace Rule...

Страница 6: ...CMOS sensor camera It supports H 264 H 263 codec with adaptive bandwidth adjustment The 7 inch touch screen offers excellent user experiences such as high quality videophone smooth internet surfing va...

Страница 7: ...68 Video Features QCIF CIF 4CIF VGA 720P Video bitrate 64kbps 2Mbps PIP Full Screen local video ON OFF control Image Codec JPEG GIF PNG BMP Others Download content from the specified server Informatio...

Страница 8: ...1 3 Equipment Appearance And Interface Description Figure 1 1 DW 820 Front View Figure 1 2 DW 820 Rear View...

Страница 9: ...nterface can be connected to a hub switch or other network access devices It also supports POE Power over Ethernet PC Share the network access from LAN port and for PC and other equipment connection P...

Страница 10: ...Hold To hold a call during the call Transfer To transfer the current call to the third party Mute The other party cannot heard the voice during the call Home Return to the main screen and long press...

Страница 11: ...2 Installation 2 1 EquipmentPackaging Name Quantity Main Case 1 Handset 1 Phone Cord 1 Power Adapter 1 Ethernet Cable 1 Quick Start Guide 1 2 2 Connecting Video Phone Connection diagram...

Страница 12: ...e video phone The PC can access to the internet network via PC Port of the video phone 2 3 InstallationConsiderations This product is a desktop product and here are some safety recommendations about t...

Страница 13: ...ming calls in Incoming call will be normal when DND is closed Accounts DW 820 supports 6 lines Accounts list will show the status of the current account Extended Screen Prompt Display the location of...

Страница 14: ...area as shown below Status Area Icon Description Network is connected Network is not connected Mute mode Alarm clock is set PPPOE is connected PPPOE is failed Notification Area Icon Description SIP ac...

Страница 15: ...ached Then lift your finger up to release Slide Move your finger fast across the screen to slide To view different idle screens or menu pages slide left or right to view the status bar on top of the s...

Страница 16: ...the status bar from the left side and drag down as shown below To turn off notifications simply hold the notice at the bottom of the screen and then drag up or press the Back on the hard keyboard Clic...

Страница 17: ...g static IP Mode 3 Drag down the status bar from the right side click SETTINGS Wireless Networks Ethernet Use static IP Mode 4 In the main screen tap Network Settings Access Mode Static IP Configurati...

Страница 18: ...bar click SETTINGS icon Wireless Networks Ethernet uncheck Use static IP Mode 4 In the main screen tap Network Settings Access Mode DHCP Configuration page is shown as below Note 1 If DHCP acquired IP...

Страница 19: ...e main screen tap Settings Wireless Networks Ethernet More PPPOE Mode 3 Drag down the status bar click SETTINGS Wireless Networks Ethernet More PPPOE Configuration page is shown as below Parameters sp...

Страница 20: ...under Alternate DNS click redial then re launch a PPPOE dial up process re dial 4 2 4 Configuring Wi Fi You can select one of the following methods to enter the Wi Fi configuration Mode 1 In the main...

Страница 21: ...nvironment if a Wi Fi AP is without password protection there is no lock icon on Wi Fi signal it will automatically connect when clicked 3 If a Wi Fi AP is encryption Wi Fi signal will be added the lo...

Страница 22: ...4 check Show advanced options you can set Proxy server and IP mode Proxy Settings IP settings Static IP...

Страница 23: ...tected Setup button if the wireless router has WPS function and the router WPS button is pressed the video phone will be able to connect to the Wi Fi without entering a password 7 Press symbol you can...

Страница 24: ...Configuration You can select one of the following methods to enter the SIP account configuration Mode 1 In the main screen click then click Account Manager Mode 2 In the main screen click Account Man...

Страница 25: ...4 3 1 Add Account Click an account to enter Account Editor...

Страница 26: ...domain IP for example 194 168 1 2 Reg Server Port The default port is 5060 Proxy Server IP SIP Proxy Server format domain IP for example 194 168 1 2 Proxy Server Port The default port is 5060 Backup P...

Страница 27: ...le the account please click If the sip account is failed to register the failure code will be displayed under the account and then you can check with the account configuration or network connection As...

Страница 28: ...to enter the Sound configuration Mode 1 In the main screen press Menu key on the hard keyboard System Settings Sound Mode 2 In the main screen click Settings Sound Mode 3 Drag down the status bar clic...

Страница 29: ...cation Dial pad touch tones and Touch sound 4 4 1 Silent Mode Hold the Power or Suspend button then choose Silent mode in the pop up menu In addition to the media and the alarm sound the rest sound is...

Страница 30: ...u can also press the keyboard volume button to increase or decrease the volume Usually volume button is used to adjust for ringtone or notification volume but in the broadcast media pressing volume bu...

Страница 31: ...touch tones and Touch sounds please go to Sound configuration page to click the corresponding sound Dial pad touch tones and Touch sounds are enabled in default configuration 4 5 Audio Settings To se...

Страница 32: ...4 6 Video Settings To configure the video corresponding parameters...

Страница 33: ...4 7 Call Settings...

Страница 34: ......

Страница 35: ...2 Select the desired account 3 Enable Always Number 4 Input the number you want to forward 4 7 2 Call forwarding busy Forwarding Number The incoming calls will be forwarded to specified number when t...

Страница 36: ...Answer Forwarding 4 Input the number you want to forward 4 7 4 Time out Setup the no answer forwarding time When the call is beyond the time the default is 30 seconds without answer it will transfer t...

Страница 37: ...Call Waiting 2 Enable Call Waiting 4 7 7 Playtone The caller will hear the tone when waiting Different SIP server supports different playtone 4 7 8 Intercom It is used to answer the incoming call aut...

Страница 38: ...Setup Hotline Number and Delay Times 5 Click Save 4 8 Dial Plan Rules Allow user to select Replace Rules or Dial Now to display or edit Rules Modify Allow user to modify selected rules information for...

Страница 39: ...configuration state to match a remote profile periodically and on power up by contacting a normal provisioning server NPS or an access control server ACS In this document we assume that the administr...

Страница 40: ...ersonalize 4 10 1 Log Level The Log level is divided into seven levels EMERG ALERT CRIT ERR WARNING NOTICE INFO DEBUG log class is from low to high The default setting is EMERG which is the lowest gra...

Страница 41: ...uto Mode The default mode is Phone Mode 4 11 Reboot Manager 4 11 1 Reboot time User can setup the reboot date and hour you want 4 11 2 Status of time If the status is enable users can edit the reboot...

Страница 42: ...Date time Mode 2 In the main screen tap Settings Date time Mode 3 Drag down the status bar click SETTINGS icon Date time The configuration page is shown as below If you want to manually set the date a...

Страница 43: ...k the Done button Click Set time time settings as shown below In the figure uncheck Use 24 hour format you can increase or decrease the corresponding time value by dragging upper and lower Click AM bu...

Страница 44: ...the choice of wallpaper source In the main screen Press Menu on the keyboard wallpaper it will pop up wallpaper selection interface to select a wallpaper source In the main screen Press on the blank p...

Страница 45: ...drag it to the border or outside the borders to change the size of the crop box Mode 2 Browse pictures in the gallery and then follow the second step in mode 1 to set the wallpaper Mode 3 1 Browse a p...

Страница 46: ...d Widget If you want to modify the location of added widgets on the desktop hold the widget until the icon appears on the upper left corner of the screen you can drag the widget to the corresponding p...

Страница 47: ...ntil the icon appears on the upper left corner of the screen you can drag the widget to to delete the widget 4 13 3 Shortcuts You can add the shortcuts such as Application Webpage bookmarks and the ot...

Страница 48: ...k start program on the extended bar at the bottom of the screen The default extended bar as shown below In the main screen hold the shortcut until the icon appears on the upper left corner of the scre...

Страница 49: ...p select and press a music and then In the pop up menu options select Ringtone Phone 4 14 Backup Reset 1 Click Setting 2 Click Backup reset 3 Click Factory data reset 4 Click Reset Multimedia Terminal...

Страница 50: ...er 4 3 5 1 1 Make A Call You can directly dial from the keypad from the contact or from call records 5 1 1 1Dial Out Directly 1 You can choose one of the following steps to enter into the dialing inte...

Страница 51: ...dial interface or press Delete button on the keypad 2 If you want to make an audio call please click Audio Call if you want to make a video call please click Video Call 3 If you have registered a mul...

Страница 52: ...on the right side As shown in below picture 2 You can click to make an audio call click to make a video call or click to send the message 5 1 2 1 Contacts Fuzzy Matching Query Video phone supports co...

Страница 53: ...hone number to dial automatically 5 1 3 Receive A Call Incoming calls include audio and video calls If the caller has been stored in the contacts it will show the contact name and imcoming picture oth...

Страница 54: ...a video invite is requested it will pop up the following window Click Accept to accept the video invite and then the call will change to video call Click Reject to reject the video invite audio call w...

Страница 55: ...call Click to switch to audio call Click to switch to Speaker Click to switch to handset Extended function Function under development 5 1 4 1 Dialing Interface Click the keyboard in the conversation...

Страница 56: ...l be hold During a call you can click on any line in the list to resume the call 5 1 5 Call Records 5 1 5 1 View Call Records When got a missed call the screen will display the missed call notificatio...

Страница 57: ...You can click the drop down list to choose the call record types it supports all call missed call received call dialed call and forwarded call five types of call information 2 Call records are shown...

Страница 58: ...ow Press the icon on the top right corner Click to select all recordsg Click 5 1 5 4 Add A Contact From Call Records If you want to save a contact from the call records or merge the contact into the e...

Страница 59: ...con 5 2 1 Local Phone Book You can view audio call video call add edit delete the Local contacts 5 2 1 1 Add A New Contact 1 Click the icon on the top right corner and click New Contact in the drop do...

Страница 60: ...he image from Take Photo or Choose photo from Gallery Delete the note Cancel the edit Save the contact Some more information If you want to add some more information please click it will pop up the pa...

Страница 61: ...edit page you can edit the contact information 5 2 1 3Delete The Contact You can choose one of the following methods to delete the contacts Long press the contact you need to delete from your contact...

Страница 62: ...t the remote phone book via web interface 3 Access Phone Book Remote Phone Book 4 Input URL of phone book 5 Input the phone book name 6 Click the Submit key to save 7 Access the remote phone book via...

Страница 63: ...e New group 3 Input a new group name in pop up dialog box 4 Click Confirm to save 5 2 5 2 Rename A Group 1 Click the group you want to rename in contact page 2 Click 3 Input the new name you want dire...

Страница 64: ...monitor a specific user for status changes on IP phones For example you can configure a BLF key on a supervisor s phone to monitor the phone user status busy or idle When the monitored user places a c...

Страница 65: ...Note After you finish BLF Key configuration you need to drag ExtKey from the WIDGETS to the main interface As shown below...

Страница 66: ...ed user receives an incoming call Solid red The monitored user is dialing The monitored user is talking Off The monitored user does not exist 5 4 Intercom Select Type as Intercom enter intercom code i...

Страница 67: ......

Страница 68: ...call 5 The phone will connect the extension number of remote user automatically 6 Answer the intercom incoming calling 7 In default situation the IP phone DENWA DW 820 will answer the intercom 8 Incom...

Страница 69: ...or Cancel after you click Call Return Key As shown below 5 6 BLFList BLF List While using BroadSoft platform the accounts which are monitored by the sip phone will reply the subscribe news in the for...

Страница 70: ...A DW 820 supports specified pickup and group pickup Specified pickup can answer specified user s incoming calls When the user of specified pickup number is off or busy you can press the pickup key to...

Страница 71: ...tribution ACD enables organizations to manage a large number of phone calls on an individual basis ACD enables the use of IP phones in a call center role by automatically distributing incoming calls t...

Страница 72: ...to the familiar mode such as the remote function of the computer 1 After setting the HotDesking on Soft key 2 Enter Ext Key interface tick Hot Desking enable it 3 Pressing the HotDesking and enter the...

Страница 73: ...rence You can use the conference feature to hold a 3 way conference by pressing the Conference soft key to invite the current talking and one line talking held to attend conference 5 10 1 reate 3 way...

Страница 74: ...number of second party and press the Video Call or Auido Call to make a call 4 When the second party answers your call press the Conference softkey or the Conference key on the keypad to enter the 3...

Страница 75: ...6 If you want to quit Conference please enter 3 way Conference interface again select Split Meeting or Hang up the phone...

Страница 76: ...keypad or click 3 Enter the target number 4 Click Blind to transfer the number 5 11 2 Attended Transfer 1 Pick up a call press transfer key on the keypad or click 2 Enter the target number 3 Click Att...

Страница 77: ...net You can use one of the following methods to run the browser Mode 1 In the main screen click Mode 2 In the main screen click 5 13 1 Open The Webpage 5 13 1 1 Browser Address Bar Run the browser ent...

Страница 78: ...Add a new webpage View the bookmark and browsing history Others Click then select History To check the Most visited Web pages and Today visited pages...

Страница 79: ...lick on the upper right corner or long press on the screen to pop up the menu Setting White balance setting 5 14 1 2 Mode Switch Click on the lower right corner to switch the mode Panoramic camera mod...

Страница 80: ...recording and save 5 15 Gallery You can use Gallery to view photos or videos and you can also view the picture or video downloaded from the Internet You can edit the photo or picture and set it as wa...

Страница 81: ...nal area networks with high levels of security On DW 820 users could use Bluetooth to transfer files share contact information with other Bluetooth portable devices by installing Bluetooth Application...

Страница 82: ...Bluetooth device name by default The device name will be visible to other devices when connecting them Follow the steps below to change the name Go to DW 820 s Settings Click on Wireless Networks Cli...

Страница 83: ...pted message if any Or if PIN is required please refer to the device s documentation or other procedures to obtain the PIN 5 16 4 Un pairing A Bluetooth Device After successfully pared the DW 820 will...

Страница 84: ...ck Calendar As shown below If one day has activity color will appear on the calendar to remind 5 18 1 Add An Account While using the calendar at the first time it will remind you to add an account Cli...

Страница 85: ...ly or monthly displaying you can slide the calendar left and right to view the different day or month Click the date on the upper left corner it will display the drop down list monthly Calendar displa...

Страница 86: ...to finish 5 18 4 Edit Activities You can click on schedule needed to be modified to edit the schedule 5 18 5 Delete Activities While viewing the activity you can click DELETE on the upper right corne...

Страница 87: ...the activity 5 19 Clock Enter the Clock In the main screen click Clock As shown below Description Alarm Countdown timer Stopwatch Time zone Others 5 19 1 Alarm You can add one or multiple alarms...

Страница 88: ...u want to repeat the alarm in some days of a week please click REPEAT 5 You can choose the ringtone of the alarm 5 19 1 1 Enable DisableAlarm You can click ON OFF to enable or disable the alarm Note I...

Страница 89: ...ck on the alarm 5 19 1 3 Delete Alarm In Alarm page you can use the following method to delete the alarm Press and hold the alarm after pop up the dialog box click and then click OK 5 19 2 Countdown T...

Страница 90: ...ou use POP3 or IMAP service to send and receive e mail Start Email In the main screen click Email 5 20 1 Add A New Email Account Make sure the email account has enabled POP3 or IMAP service and you ca...

Страница 91: ...il account and password and then click Next If there is no account type in the equipment database you want to set the device will require you to enter more detailed information the receiving server se...

Страница 92: ...iew all songs You can also view or play the songs from the playlists To view the currently playing song please click the now playing label 5 22 Explorer You can use explorer to manage the files in the...

Страница 93: ...w Folder Previous File Next File If you insert a SD card you can view the files in SD card Optional View the internal files of the device View the files in inserted USB device 5 23 Video Player You ca...

Страница 94: ...ckward Hold Play The next video and long press to make video fast forward Screen size adjustment four type of video sizes original size full screen 16 9 4 3 Floating browse mode Others 5 23 1 Floating...

Страница 95: ...n to adjust the window size If you want to close the floating window please long press the floating window until it displays icon in the center click on the icon to close the floating window 5 24 Othe...

Страница 96: ...u can click Install and then browse the path The system will list all the Apk applications under the path click the Apk to install 5 24 1 2 Manage You can click on Manage button to browse the Apk inst...

Страница 97: ...Query Ping query interface is as shown You can input the address you want to Ping click the Ping button you can view the Ping query results If you take a long Ping query in the input box please manua...

Страница 98: ...ress Start Tcpdump to start the log captured If you want to finish the log captured you can press Stop Tcpdump to stop the capture and the system will prompt the file saved path You can use Wireshark...

Страница 99: ...t the log level through the drop down list Or click to see more options if you need to save the log please click select Save If you need to highlight the log information please click select highlight...

Страница 100: ...on board System Settings System About Multimedia Terminal System Upgrade System Update Now In the main screen tap on settings icon System Multimedia Terminal System Upgrade System Update Now Update i...

Страница 101: ...o copy the upgrade package into Internal Memory then press Select other upgrade package find mnt sdcard find upgrade document then click OK to upgrade 6 1 2 Local Update 1 Via USB to Upgrade Change th...

Страница 102: ...press Local Update to start upgrading 6 1 3 Remote Update 1 Enter the interface in figure 5 1 click Server Address and input the server address that contains upgrade package As shown below 2 Click Re...

Страница 103: ...ludes four modes None One Day One Week and One Month The terminal will detect the new version automatically in time if there is the status bar will show There is a new version please update Click and...

Страница 104: ...uter 3 Click 6 4 Check Update After System Power On Click Check Update After System Power On Every time you power on the system will check the new version automatically If there is a new one the statu...

Страница 105: ...in this item 7 2 IP Query Mode 1 In the main screen press Menu key on the hard keyboard System Settings Ethernet Mode 2 In the main screen click Ethernet Mode 3 Press Speaker button or pick up to ente...

Страница 106: ...information in setting interface 7 3 SIP Account Registration Query You can choose one of the following methods to enter the SIP account registration query If the account is successfully registered th...

Страница 107: ...account enter the setup interface check Account Manager 7 4 Backup Reset Mode 1 In the main screen press Menu key on the hard keyboard System Settings Backup reset Mode 2 In the main screen click Back...

Страница 108: ...cable in LAN port is loose Please check the IP address of phone via configuration go to 4 2 network configuration If it s now in LAN please check whether the IP address of phone is conflict with other...

Страница 109: ...gin 1 Open the browser on your computer 2 Input the IP address in the address bar 3 Enter the user name and password user name admin password admin then click 8 2 Status Basic Click Status Basic to ch...

Страница 110: ...nd Hardware firmware Network Information To display the device s Networking status LAN Port such as Port Type which could be DHCP Static PPPoE Link Status IP Address Subnet Mask Gateway Primary DNS se...

Страница 111: ...8 3Account Basic...

Страница 112: ...settings This is for redundancy if registering to Primary SIP server fails the IP phone will go to Secondary SIP server for registering Note Secondary SIP server is used for redundancy it can be left...

Страница 113: ...8 4 Account Advanced...

Страница 114: ...gure call related features Max Local SIP Port To configure maximum local sip port for designated account Min Local SIP Port To configure minimum local sip port for designated account Caller ID Header...

Страница 115: ...here stands for SIP server User Agent One can customize User Agent field in the SIP message If user agent is set to specific value user could see the information from PCAP If user agent is not set by...

Страница 116: ...that RTP stream can use VLAN To display and configure VLAN settings LAN Port PC Port You can configure VLAN setting for both ports respectively Active To enable or disable VLAN feature for designated...

Страница 117: ...8 6 Phone Call Feature...

Страница 118: ...eturn Code when DND Determine what response code should be sent back to server when there is an incoming call if DND on DND On Code The Code used to turn on DND on server s side if configured IP phone...

Страница 119: ...c host to interact with IP phone by sending HTTP or HTTPS requests The specific action could be answering an incoming call hangup an ongoing call and so on Allowed Access IP List To configure the allo...

Страница 120: ...packets that indicate silence is occurring It can facilitate speech processing and deactivate some processes during non speech section of an audio session It can avoid unnecessary coding or transmissi...

Страница 121: ...ircuit gain via signal Automatic Gain Control Sending side Disabled by default Automatic Gain Control Receiving side Disabled by default Automatic Gain Control Target Range from 1 to 20 dB 3dB by defa...

Страница 122: ...celeration when you need Hardware Decodec Acceleration Disabled by default Color Enhancement To increase the phone display color Enabled by default Image Quality User can select Low Middle or High mod...

Страница 123: ...les Modify Allow user to modify selected rules information for replace rule you can modify related accounts prefix and replace Area Code Area codes are also known as NPAs Numbering Plan Areas They usu...

Страница 124: ...ed delay time if it match any dial now rule Rules Modify Allow user to modify selected rules information for dial now rule user can modify related accounts Dial now Rule itself Area Code Area codes ar...

Страница 125: ...d When the IP phone successfully registers an account Unregistered When the IP phone logs off the registered account Register Failed When the IP phone fails to register an account Off Hook When the IP...

Страница 126: ...l Blind Transfer When the IP phone blind transfers a call Attended Transfer When the IP phone performs the semi attended attended transfer Hold When the IP phone places a call on hold UnHold When the...

Страница 127: ...e Multicast setting Paging Barge Choose the multicast number the range is 1 10 Paging priority Active Enable o disable the multicast Priority List To setup the multicast parameters Listening Address E...

Страница 128: ...gnated contacts from local phonebook Dial To dial out a call or hangup an ongoing call from Web UI Note For this feature you need to have the remote control privilege to control IP phone via Web UI Pl...

Страница 129: ...remote book server address Local Book Name To configure display remote book name on Phone UI Search Remote Phonebook Name To enable or disable search remote phonebook name Search Flash Interval To set...

Страница 130: ...y types are All calls Dialed calls Received calls Missed calls Forwarded calls HangUp To click to hangup ongoing call on the IP phone Note For HangUp feature you need to have the remote control privil...

Страница 131: ...address Port To configure LDAP server s port Base DN To configure searching base DN on LDAP server User Name To configure user name for accessing LDAP server Password To configure password for access...

Страница 132: ...rmation 8 18 PhoneBook Broadsoft Sections Description Broadsoft PhoneBook To display and configure Broadsoft PhoneBook settings PhoneBook Item To select specific item to configure Display Name The nam...

Страница 133: ...re version To display firmware version firmware version starts with MODEL name Hardware Version To display Hardware version Upgrade To select upgrading zip file from local or a remote server automatic...

Страница 134: ...setting for Auto Provisioning PNP Plug and Play once PNP is enabled the phone will send SIP subscription message to PNP server automatically to get Auto Provisioning server s address By default this...

Страница 135: ...ure Auto Provisioning mode settings This Auto Provisioning mode is actually self explanatory For example mode Power on means IP phone will go to do Provisioning every time it powers on System Log To d...

Страница 136: ...or user Current Password The current password you used New Password Input new password you intend to use Confirm Password Repeat the new password Note Security is configurable via web only Session Tim...

Страница 137: ...deleted Web Server Certificate Upload To upload a certificate file which will be used as server certificate Client Certificate To display or delete Certificates which is used when IP phone is connect...

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Denwa Communications DW-820, Руководство пользователя

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