background image

 

 

Summary of Contents for OVR 2000

Page 1: ......

Page 2: ......

Page 3: ...16 2 8 SENSOR ALARM SETUP 17 2 9 AUDIO SETUP 18 2 10 ACCOUNT SETUP 19 2 11 NETWORK SETUP 21 2 12 DIET MODE SETUP 23 2 13 ETC SETUP 26 2 14 SOFT KEYBOARD 29 2 15 CONFIRM CANCEL 29 3 MONITORING SCREEN 30 3 1 INTRODUCTION 30 3 2 SCREEN DIVISION SETUP 31 3 3 RECORDING STATUS 33 3 4 CAMERA CONTROL 34 3 5 REAL TIME AUDIO 35 3 6 DVR INFORMATION WINDOW 35 3 7 LOG WINDOW 36 3 8 EVENT LOG HISTORY WINDOW 36 ...

Page 4: ...MA SCREEN ZOOM 59 6 6 IMAGE ADJUSTMENT 60 6 7 SMART SEARCH 61 7 FILE BACKUP 62 7 1 ENTERING THE BACKUP SCREEN 62 7 2 INTRODUCTION 63 7 3 BACKUP SELECTED FILE 64 7 4 BACKUP BY TIME 65 7 5 FILE SAVING STRUCTURE OF OVR DVR FOR BACKUP 66 8 APPENDIX 1 67 8 1 OPEN PROTOCOL 67 8 2 STARTING OPEN PROTOCOL 67 8 3 OPEN PROTOCOL SETUP 68 8 4 OPEN PROTOCOL EXAMPLE 69 8 5 HEXADEMICAL NUMERIC SYSTEM 71 9 APPENDI...

Page 5: ...ou have shut down the program yourself or deleted the program from the START UP program list please click the program icon on the desktop 1 2 PROGRAM EXIT When exiting the program please exit by pressing the Exit button You will exit to the desktop 1 Press Exit button on the Monitoring Screen 2 Select Admin on the USER NAME and then enter its PASSWORD The default Password is 1 Then press OK and th...

Page 6: ...he shutdown dialog box select Shutdown and press the OK button 2 Within a minute the system will be completely shut down 1 4 SHELL MODE Omnivision DVR s provide a shell mode that allows the use of compulsory functions of Windows to keep a DVR only as a surveillance device With the shell mode users cannot operate a program or access the internet which may interrupt the proper operation of a DVR DVR...

Page 7: ...programs through Task Manager 2 Make modify the network information of a DVR including IP through Network 3 Configure a printer after installing it through Printer 4 Set time date for the recorded images and the search for them through Date Time 5 Configure multimedia devices including a sound card through Multimedia 6 See the version number of the DVR software through Version Info ...

Page 8: ... a shortcut icon for a program with the Shortcut function Double click the shortcut icon to open the file explorer Choose the file and press Open button The shortcut icon created will be displayed in the top left of the DVR Shell screen To remove the icon click the icon and press Delete key on a keyboard F Finish Restart the system G Uninstall the program H Command Line ...

Page 9: ...ormation 1 5 EZ update EZ update ensures you have the most newly updated DVR software Users should run EZ update manually to update the DVR software Please refer below for the operation of EZ update 1 Double click the EZ update icon 2 The following window will appear ...

Page 10: ... Select a model among 1000 1800 2000 2200 4000 and 4200 For more information on the version or the model please refer to the tool box C Language Select a language D CLOSE Stop updating and close the window E NEXT Finish the selection and go to the next window 3 Updated contents are shown Press UPDATE button to process the update and BACK button to go back to previous window ...

Page 11: ...e is completed Press OK button to finish the update process When you start the DVR afterward the updated information will be automatically applied EZ Update server is not activated by default Please contact OmniVision when you need an update for the DVR software ...

Page 12: ...utton on the Monitoring Screen The Login Window will appear 2 Select Admin on the User Name box and enter the password The default password is 1 Then press OK button The Setup Screen will appear NOTE You can only select the User Name by clicking the dropdown menu not by typing ...

Page 13: ...2 SETUP 9 2 2 SETUP MENU BAR The setup menu bar consists of 11 setting buttons a cancel button and a confirm button ...

Page 14: ...name Name each camera 10 alphabets maximum C PAN TILT Driver Select the Pan Tilt driver for the PTZ camera You can select various drivers for each camera D Compression rate Sets the compression rate The higher the rate the longer the recording time E Resolution Select the recording resolution F Default Set all settings to default ...

Page 15: ...as from being displayed on the Monitoring Screen 2 4 RECORD SPEED SETUP Set the recording speed Frame rate in this menu A CAPTURE Frames transmitted from connected cameras For example if a user sets the frame rate to 7 for Camera 1 the DVR will receive 7 frames per second from Camera 1 B RECORDING The frames recorded from the frames captured Frames recorded have to be equal or less than the frames...

Page 16: ...ras F DEFAULT Set all items to the default settings G CAMERA Select the camera to configure REC TIME Recording time setting H Always Records images all times Able to set the creation time of record file every 3 10minutes I Motion Starts recording image after motion is detected User can set the system to keep recording for amount of time 3 10 seconds J Sensor Starts recording image after the sensor...

Page 17: ...ssing the CTRL key 2 Select Time Display the selected recording time 3 Day Select Set the recording mode to the selected day 4 Recording Mode Buttons Select the recording mode Continuous Motion Sensor 5 All Cameras Set all camera recording modes like the selected camera 6 All days Set all recording schedules like the selected schedule date 7 Default button Set all to default ...

Page 18: ... recording 4 Repeat step 2 3 to set the recording schedule 5 If you want to set one recording mode on a total day select the recording mode and press the date button Ex If I want to set Continuous 24hours on Wednesday select the Continuous and press Wed 6 Press All Cameras to set all camera schedules same as the settings on one camera Ex If I want the set all the cameras like camera no 1 like the ...

Page 19: ...lect Whole image for Motion detecting area C CLEAR Clear the last surveillance area that was set D ZONE Use part of the camera images for Motion detecting area Please refer to below to set the detecting zones 1 Select a camera 2 Press Zone button 3 Drag the desired zone The zone forms like a square E UNDO Clear all zones F SENSITIVITY Set the sensitivity of the motion detection The system gets mor...

Page 20: ...ess and contrast by moving the slide bar or choosing the number K DEFAULT Default the brightness and contrast of selected camera L DEFAULT ALL Default the brightness and contrast of all cameras M APPLY ALL Standardize the brightness and contrast of all cameras as set 2 7 AV MONITOR Set the sensor and alarm for better monitoring The sensor will only activate when the sensor schedule is set The alar...

Page 21: ... sensor will only activate when the sensor schedule is set The alarm will activate at sensor and motion recording mode SENSOR SETUP ALARM SETUP 1 One sensor can link with 3 cameras 2 One camera can link with 3 sensors maximum 3 Sensor no 16 is used for communication It will transmit the DVR recording data to distant places This sensor must be made a switch type 4 You can select a type of sensor ei...

Page 22: ... with the recording image select the camera and turn the Audio A Camera Show the camera number B Audio After selecting a camera you can set the audio on off C Default Set all values to off D Audio Type Select CaptureBoard when using more than 2 audios NOTE OVR 2000 2200 4000 4200 only supports 16 audio channels ...

Page 23: ...an ID and give it an authority for DVR functions Previously made IDs are on the left list and add modify delete for an ID is made on the right menu Only Admin user can do the account setup 1 ID Show the all present IDs 2 AUTHORITY Show authorities given to each ID ...

Page 24: ...be sure 7 AUTHORITY Selected ID has an authority for a checked function 1 Setup An authority for setup 2 Search An authority for search 3 Backup An authority for backup 4 DVR Power An authority for DVR power on off 5 Duplex Audio An authority for using the duplex audio 6 Remote Setup An authority for the remote setup 7 Communication An authority for remote access to the DVR Up to 5 IDs can get thi...

Page 25: ...ient 10 Setup An authority for remote access to the camera channels unit as like as below picture 8 CLEAR Delete the information 2 11 NETWORK SETUP User can set the functions regarding the remote access in the network setup 1 TCP IP access on off 2 Modem access on off 3 Web Server on off 4 Connected user status and connect block 5 Maximum guest users ...

Page 26: ...rowser OFF Don t permit the image transmission using a web browser Please refer to 9 Appendix 2 for further information on Web Server D Users User can see connected user IDs IP and functions in use User also can disconnect them with disconnect button User can see the connected user status by clicking Ctrl U in the main screen E GUEST user User can appoint the maximum number of guest users There is...

Page 27: ...There is not such a big difference between User and Guest user but Guest user helps your DVR system operates better by reducing memory spending 2 User s have to change TCP IP filtering after changing Stream Port WebClient Port and Safemode Port Please refer to 10 1 TCP IP filtering 3 If you changed Stream port you have to change the HTML file in the OVR1000N and OVR1800 folder C OVR1800 html index...

Page 28: ...n on diet mode C Emergency Set emergency situation on diet mode Return to main page Goes back to main page for emergency Message popup Pops up a note for emergency No use Do not use this mode D On top ON Always puts the monitoring screen on top OFF Turns off this mode E Continuous recording ON Always record images OFF Turns off this mode F Motion ON Use motion recording on Diet mode ...

Page 29: ...ncel Cancel the selected cameras I Diet mode Activate the Diet mode Right click on the Diet mode screen to see the menu DIET MODE 1 Main page Return to the DVR monitoring screen 2 On top ON Always puts the monitoring screen on top OFF Turns off this mode 3 Rotation ON Turns on rotation on diet mode OFF Turns off rotation on diet mode 4 Exit Exit the Diet mode and turn off the DVR system ...

Page 30: ... will transmit the DVR recording data to distant places C Ctrl Alt Del By setting this function Off user can block other users from the system using Ctrl Alt Delete function key D WATCHDOG Watchdog is a system that automatically reboots the program when there is an error on the system E CD Writer PROGRAM To save recorded image files in a CD you must set the CD Writer program Before this the CD Wri...

Page 31: ...information regularly J RECORDING HDD If there are multiple HDD s in your system user can select which HDD to record HDD Available stands for the available HDD s HDD In USE stands for the HDD s that are in use of recording images K CODEC SM4 MPEG4 for OVR2000 2200 4000 4000 T 4200 4200 T 4400 L EMERGENCY POPUP sec When emergency situation e g Motion Sensor recording mode in VR pop up window appear...

Page 32: ...ch at on the picture above 2 A window will pop up after pressing the Search button You can press Search on this window to find the program file you want 3 When the search is over press OK to end the setting 4 Go to the Monitoring screen and press the Save button to save ...

Page 33: ...n be used when there is no keyboard connected User can use this by clicking the Soft Keyboard button Move and click the mouse on the Soft Keyboard to use 2 15 CONFIRM CANCEL Confirm Save all settings and exits the program Cancel Cancel all settings and exits the program ...

Page 34: ...ll turn to red 3 Camera Button Allow user to select a camera for control Pressing any one of these buttons will show user a selected camera in a single screen view 4 Alarm Indicator Show status of sensor outputs During sensor activation the related indicator will turn to red 5 Screen Division Button Allow user to select screen division 6 Exit Button Exit the program 7 Backup Button Bring up Backup...

Page 35: ...ff and control the sound Right click on sound button will show the sound selection option as below 13 Camera Control Panel Allow user to control a selected camera 3 2 SCREEN DIVISION SETUP A Show 4 division screens of camera 1 4 B Show 4 division screens of camera 1 8 C Show 4 division screens of camera 9 12 D Show 4 division screens of camera 13 16 E Show camera 1 16 BASIC DIVISION F Show other d...

Page 36: ...he split screen 6 7 8 9 10 13 a Show 6 division screens of camera 1 6 b Show 6 division screens of camera 6 11 c Show 6 division screens of camera 11 16 d Show 7 division screens of camera 1 7 e Show 7 division screens of camera 5 11 f Show 7 division screens of camera 10 16 g Show 8 division screens of camera 1 8 h Show 8 division screens of camera 9 16 i Show 9 division screens of camera 1 9 j S...

Page 37: ...ision screens of camera 4 16 NOTE When using DVRX 1000 user can use Light On Off function in the ETC button In case of using this function you can control the light connected with DVRX 1000 3 3 RECORDING STATUS B Recording Status While recording or using audio some characters will be presented as below A Set the Audio function C Continuous recording M Motion recording S Sensor recording ...

Page 38: ...a Button will be indicated pressed 3 Using Camera Control Panel user can move the selected camera and also can adjust the lens 4 Each function of the Camera Control Panel is as bellow A Move the selected camera up B Move the selected camera down C Auto panning Button D Move the selected camera left E Move the selected camera right F Zoom in G Zoom out H Focus on a near object I Focus on a far obje...

Page 39: ...tting the slide bar on top of the Audio button NOTE User can hear the audio only when the audio is set to ON in the audio setup Please refer to p 15 2 8 Audio Setup 3 6 DVR INFORMATION WINDOW You can see the version and kind of the DVR you have by pressing Ctrl V You can see the version and the build date of the DVR ...

Page 40: ...re shown on the log window 1 System Start and Stop 2 Setup Operation 3 Sensor Input and Output Activation 4 Motion Detection and Sensor Output Activation 3 8 EVENT LOG HISTORY WINDOW Every important operation will be written in the log file Follow these steps to trace the log history 1 Holding down Ctrl key press E 2 Event and Log History Window will appear 3 Press OK Button to close this window ...

Page 41: ...that user has exited the save page in Multi Search Motion Detection Show that there was motion detection Sensor Show that the sensor has activated Water marking On Show that the Watermarking is started Water marking Off Show that the Watermarking is ended Remote login Show that there is a remote login on the system Remote logout Show that the remote login has ended Remote login User Failure Show t...

Page 42: ...3 MONITORING 38 In the LOG2 you can find setup information like as camera frame schedule motion audio network authority and ETC ...

Page 43: ...3 MONITORING 39 ...

Page 44: ...he connected user state from remote sites by pressing Ctrl U 1 Present state 2 User ID 3 Remote site IP Refresh button Refresh the present status of connected users Disconnect button Disconnected the selected user from the system Close button Close the window ...

Page 45: ... INTRODUCTION Follow these steps to enter the search screen 1 Press Search button from the monitoring screen 2 Select a User ID and enter its password The default password is 1 3 Press the OK button to enter the Search Screen ...

Page 46: ...s recording mode 4 Indexed List Show user the recorded video list fit to option A C User can select a video to replay from the list 5 Load Button Load a selected video 6 Search by Time Button Allow user to find recorded video included in the selected time range 7 Exit Button Exit to the Monitoring screen 8 Multi Search Display the Multi Search Screen 9 Print Button Print sequential images out from...

Page 47: ... Display a loaded video 4 3 VIDEO SEARCH Follow these steps to search and find video files 1 Select a date to search using calendar The color of the date with recorded images are in blue 2 Select a camera to search 3 Select a recording mode for filtering All Always Motion Sensor The meaning of each buttons is as bellows All Search all video regardless to their recording modes Always Search only vi...

Page 48: ... pressing Search by Time button When there is no time range selected show all video of the selected day 5 Select a video and press Load button 6 The selected video will appear 4 4 PLAY CONTROLS You can control playing by using Play Control buttons ...

Page 49: ...UDIO PLAY The followings are how to play a recorded file with audio 1 Select video file recorded with audio 2 Load selected data 3 Turn on or turn off the audio by press audio button 4 Adjust audio volume with slide bar ...

Page 50: ... 3 Press Save button 4 Select a graphic format 5 Pressing OK button will save the selected image into the floppy disk 4 7 IMAGE PRINT User can print out consecutive 8 images from the loaded video Follow these steps to print out images 1 Press Stop button at the desired frame during play 2 Press Print button 3 Adjust the number of frames to print out 4 Press OK button will print out the selected im...

Page 51: ...5 MULTI SEARCH 47 5 MULTI SEARCH 5 1 MULTI SEARCH Press the Multi Search button on the bottom of the search screen Press this button to move to the multi search screen ...

Page 52: ...ously 1 Time display window Display current date and time 2 Split function Button Load video data according to each split buttons From upper left end 1 4ch 5 8ch 9 12ch 13 16ch Selected 1ch 1 9ch 8 16ch All 16ch 3 Bookmark You can add delete and find the bookmark frame 4 Full screen Show the video image on full screen ...

Page 53: ...Recording mode select button Show 3 types of recording files on the screen All shows all types of recording files 10 Play control You can control the video display 11 Search The recoding situation on selected date which is selected in Calendar is displayed by recoding mode with specific colors 12 Load button Allow user to load video data 13 Search time User can select time to search Click Time Min...

Page 54: ... Select a time to search using up down buttons 3 Also user can select a time to search by clicking the graph Selected time is displayed as black vertical line You will see this information on the search screen Selected Time Black vertical line Always Red zone Continuous recording mode Motion Blue zone Motion Detection recording mode Sensor Green zone Sensor recording mode ...

Page 55: ...d Press again and then selected buttons are deactivated And User can also select 1 audio channel to play with User must set up same audio channel which is set in Setup screen 6 Another way to select video channel is using split buttons Split button allows user to load split view type in selected time Split buttons don t need Load action Pressing split button selected video data will be loaded at o...

Page 56: ...OM IN MODE Most of button functions are same You only shall learn below functions Return Return to the multi search screen Panorama Turn over to the Panorama zoom screen Exit Exit this mode and go back to the monitoring screen ...

Page 57: ...K 1 Add Add the desired frames on the bookmark list Please refer to the right picture 2 Delete Delete items on the bookmark list 3 Go To Select one on the bookmark list and go to the appointed frame 4 Close Close the bookmark menu ...

Page 58: ...the multi search screen select the desired footage then select one channel to enter the panoramic view screen Selected images have red out line 2 Press Panoramic view button from the Multi search screen NOTE 1 A panoramic view screens allows a user to search 1 channel only To search various channels users can use the Multi search screen To search in detail user can use panoramic view screen 2 Pano...

Page 59: ...UME Control volume on off 4 EXIT Stop panorama searching and go back to multi search 5 PLAY CONTROL BUTTONS Control the play of images A bookmark B Entire screen C Enlarge the play screen D Reduce the play screen E Image save F Image print G Advanced search H Smart search p 56 A B C D E F G H ...

Page 60: ...arch Select hour minute second am pm for search 9 LOAD Load video file meet the conditions of camera and time 10 SEARCH SCREEN Show the selected files from the left calendar in different color modes 11 CALENDAR Select the date 12 PLAY SCREEN Display the loaded images 13 FILE UPDATE Update the recorded files on the list in panorama screen 14 IMAGE ADJUSTMENT Adjust the saved images Please refer to ...

Page 61: ...EARCH A Go to the next frame You can move to the frame you want B Zoom in out The more you click the more it zooms C Return to normal screen size D Exit this mode E Zoom screen Drag a part in the screen then click to zoom in to that part ...

Page 62: ...in various modes 1X2 2X4 3X6 First click frames user want to print out in the panorama search screen Then the selected frames are outlined with blue After that press Print button to open the print window And then select the desired print mode and print the frames You can also print in various modes 1x2 2x4 3x6 ...

Page 63: ...6 PANORAMA SEARCH 59 6 5 PANORAMA SCREEN ZOOM You can also use the zoom in function in the panorama screen You can see the panorama search screen in full screen mode and go back to original screen ...

Page 64: ...els C EDGE DETECT Focus the color boundary line D EMBOSSING Make the image appear raised or stamped by converting its fill color to gray and tracing the edges with the original fill color E GRAY Turn the image to gray color F LOG Detect the boundary line G EROSION Enlarge the background and reduce the object H DILATION Enlarge the object and reduce the background ...

Page 65: ...ovements in consecutive frames This function is useful for lots of recorded frames of zones with little movements A In the panorama search screen press smart search button B Set the zones up to 5 zones for motion detecting as motion detecting recording While playing the images the DVR stop playing when it detects movements C Right click the smart search button to set the sensitivity And with Defau...

Page 66: ...KUP 62 7 FILE BACKUP 7 1 ENTERING THE BACKUP SCREEN 1 Press Backup button from the monitoring screen 2 Select a User ID and enter its password The default password is 1 3 Press OK button to bring up Backup Screen ...

Page 67: ...D RW External HDD 2 Path Allow user to select a path to which back up the recorded file 3 Refresh Button Refresh a file list of the selected backup media 4 DVD Format Button Format a DVD ROM 5 Date List Show user the dates which have recorded video Select one from the list and all files of camera 1 in the selected date will be shown by default Note that user cannot back up video of current date 6 ...

Page 68: ...nge 12 Camera Select Allow user to select a camera to back up This option is associated with Time Select option 13 Recording Mode Select Allow user to select a recording mode of video to back up This option is associated with Time Select option 14 Backup Button Back up video fit to option 11 12 13 15 Exit Button Exit to Monitoring Screen 7 3 BACKUP SELECTED FILE 1 Select a backup media to use 2 Se...

Page 69: ... format that using HDD FORMAT or DVD FORMAT button prior to backup process 7 4 BACKUP BY TIME Follow these steps to back up video using time range 1 Select a backup media to use 2 Select a drive letter of the backup media 3 Select a desired date Using Time Option select time range 4 Select a camera to back up Selecting ALL allows user to back up all cameras 5 Select a recording mode 6 Pressing Bac...

Page 70: ... need to setup CD RW hardware and install the software Easy CD Creator to back up as CD RW The tree structure of recorded image will be helpful for users to back up recorded image files as DVD or CD RW type The structure made on D or E driver is as follows To back up the recorded images from your HDD to other types of media DVD or CD RW please turn off the DVR program to avoid any troubles Recorde...

Page 71: ...ser feel safe when he she gets new P T Z cameras which is not embedded in DVR 8 2 STARTING OPEN PROTOCOL User can start the open protocol from the Setup Screen Follow these steps to edit P T Z cameras protocols 1 Enter the Setup Screen by pressing Setup button on the Monitoring Screen 2 Press the Protocol button on the Setup Screen to bring up the Open Protocol Window ...

Page 72: ...nds Set User must input each command values Please note that user should calculate each value with the P T Z camera manual D Camera ID Select a P T Z camera ID to work for To set multiple cameras up user must input each different value for each camera ID Ex When there are 5 P T Z camera named A user might need to input 5 different Commands Set for each camera ID from1 to 5 E Timer Check this optio...

Page 73: ... button to create a new command set 4 Select the values for Serial Communication The most common values is 9600 8 No 1 5 Select a camera ID 4 channel DVR user checks 1 4 camera IDs In this example we will check camera no 1 6 Enter the calculated command 7 Each P T Z camera has its own protocol commands format but most P T Z cameras use hex values for its commands So user needs to calculate hex cod...

Page 74: ...fer to 1 5 Hexadecimal Numeration System to calculate this in easy way 8 Repeat step 7 until all the commands needed are filled When finished press the ADD to save the values 9 When there is another P T Z camera to set up choose a different Camera ID with the P T Z protocol And repeat step 6 8 Press the Modify key to apply changed values 10 To edit select the model and change the value and press M...

Page 75: ...TEM User can calculate hexadecimal numbers using a calculator provided with window 1 Select Start Program Accessories Calculator 2 Select View Scientific to expand the default calculator 3 Check Hex and Byte to calculate hexadecimal byte numbers ...

Page 76: ...ks under Internet Explorer version 5 0 Type the DVR IP in the address window of internet explorer and below window will appear 9 2 WEB VIEWER WEB VIEWER is very accessible because it is receiving images using a web server function WEB VIEWER provides easy access and control instead of search for recorded images and audio function WEB VIEWER provides below functions ...

Page 77: ... the images of camera No 5 8 C Show the images of camera No 9 12 D Show the images of camera No 13 16 E Control the P T Z camera Pan Tilt Zoom and auto panning F Control the zoom of selected camera To use this function auto zoom lens should be installed first ...

Page 78: ...installed first 10 1 TCP IP filtering What s TCP IP filtering TCP IP filtering function invests all packets coming into a computer and only accept authorized of them It s only for a DVR system not for a PC 10 2 TCP IP setup for TCP IP filtering 1 Right click My network places icon and click Properties ...

Page 79: ...ction or other connection to setup and click Properties 3 In General tab in case you selected Local Area Connection or another network tab in case you selected another connection in previous step select Internet Protocol TCP IP and click Properties ...

Page 80: ...9 APPENDIX 2 76 4 Click Advanced 5 In Option tab select TCP IP filtering and click Properties ...

Page 81: ...P IP filtering over the entire adapters select Enable TCP IP Filtering All adapters 2 If you don t want deselect Enable TCP IP Filtering All adapters 7 Set TCP Ports UDP Ports and IP Protocols for allowed traffic in accordance with the requirements of TCP IP filtering ...

Page 82: ... and select Permit Only For IP Protocols just select Permit Only and remove all the substances If you do so the access by Telnet or FTP is denied Accordingly you can set DVR systems more safely against viruses or hacking Caution This TCP IP filtering is only for DVR system If you use TCP IP filtering on your PC it cannot access to the internet ...

Reviews: