Why is the screen black on my Yealink Conference System?
If the display device is black, verify that it's properly connected to the VC400/VC120 codec. Ensure the system isn't in sleep mode by pressing any key on the video conferencing phone or remote. Also, check if the display device itself is in sleep mode or turned off, and try switching the video input source to the correct one.
Why won't my Yealink VC120 Conference System call the far site?
If the system fails to call the far site, check the network availability of both the near and far sites. Verify that the far site hasn't enabled the DND (Do Not Disturb) feature. Ensure accounts are correctly registered and the appropriate account is used for the call. Confirm the number you're calling is correct and that the far site isn't rejecting your call. Check if a firewall is blocking inbound traffic, if the far site has reached its call-in limit, if encryption settings are compatible, and if both sites support the same call protocol.
Why is my Yealink Conference System remote control not working?
If the remote control isn’t working, first ensure the system is powered on. Then, check the battery polarity (+/-) and ensure the battery has sufficient power. Finally, make sure there are no special fluorescent or neon signs nearby that might interfere with the remote's signal.
Why can't I hear audio during calls on my Yealink VC120 Conference System?
If you can't hear audio during a call, first ensure that the local audio output device is correctly connected. Next, use the audio diagnose feature to check if the audio device is working normally. Also, verify that the ringer volume isn't set to the minimum and that the far site isn't muted.
Why is the voice quality poor on my Yealink Conference System?
Poor voice quality can be due to several factors. Ensure users are not too far from or too close to the microphone, and avoid frequent movement of the audio pickup device. Intermittent voice may be caused by voice packet loss or jitter. Noise from devices like computers or fans can also affect clarity. Try replacing old cables to improve connectivity.
Why doesn't the status bar on my Yealink VC120 display the IP address?
If the IP address isn't displayed on the status bar, check if the network is available and if the LAN property is configured correctly. Also, verify if the system has enabled the hide IP address feature, and check if the system has configured the firewall and NAT correctly.
Why can't I see the local video image on my Yealink VC120 Conference System?
If you can't view the local video image, check that the near site camera is correctly connected to the VC400/VC120 codec and that the camera is powered on with the LED indicator illuminated green. Ensure the camera is selected as the current video input source and that the screen layout isn't set to display the remote video image in full size.
What to do if the network keeps losing packets on Yealink Conference System?
If the network keeps losing packets, check whether the network is available and if the LED indicator on the left of the Internet port illuminates green. Try using a low-speed connection to check whether packets are lost, as deficient bandwidth can cause packet loss. Also, check the configuration of the network speed and duplex mode on the system, switch, and router.
Why can't the far site hear the local audio from my Yealink Conference System?
If the far site can't hear the local audio, ensure that the local audio input device is connected correctly. Check if the near site is muted, and also check whether the system has enabled the auto answer mute or auto dialout mute feature.
How to adjust the camera angle and focus on my Yealink VC120 Conference System?
To adjust the camera angle and focus, ensure you are doing so when the system is idle or during a call. Check the remote control batteries are working, installed correctly, and aim it at the sensor without obstructions. Confirm the camera's LED flashes green when using the remote. Make sure you are controlling the local camera. If issues persist, reboot the system or consider the remote may be broken.
General| Brand | Yealink |
|---|---|
| Model | VC120 |
| Category | Conference System |
| Language | English |
Provides basic instructions for installing the VC120 video conferencing system and its components.
Guides users on how to safely power the VC120 system on and off.
Explains the initial system configuration process using the setup wizard.
Details the process of registering H.323, SIP, and cloud platform accounts for the system.
Covers basic customization options like site name, time, and language.
Manages multipoint conferences by extending system capacity to 8-way calls.
Explains procedures for answering or rejecting incoming calls.
Covers functions like muting, recording, and controlling video during calls.
Offers diagnostic tools like Audio, Camera, Ping, and Trace Route.
Addresses common problems like call placement, reception, and network connectivity.
Provides solutions for camera-related problems like lighting, angle, focus, and quality.
Troubleshoots problems related to the display device not showing video or presentations.
Solves problems with hearing audio or ringtones, and poor audio quality.
Covers rebooting the phone and exporting PCAP traces or system logs.
Essential safety precautions for device installation and operation.
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