We have put together a checklist here that you can use to check whether you can successfully enter YuLinc. In addition to the checklist, this overview also includes points that can cause problems in some cases (these are summarized at the end).
Entering a YuLinc test room
You are welcome to use our YuLinc test room. Here you can try out your audio and video functions and meet colleagues for a sound check:
When entering the Gen2 test room, first enter your name:
After clicking “Join session” and setting your audio and video, you can test your microphone and webcam:
Audio:
You can select or change the speaker (or headphones) and your microphone.
If a microphone is connected, its functionality can be checked directly by looking at the level indicator (briefly speak into your microphone).
Webcam / Video
If the “Virtual background” tab is available (activated in the organizer’s account), you can view a transmission of your video signal including the virtual background you selected:
Moderators:
When entering YuLinc, you can check, adjust if necessary, and test your settings via the start window:
Screenshot
If the video is transmitted and you see a level response from your microphone (please speak briefly to test), the webcam and microphone are working (adjust the level if needed).
Under Audio Test you can select and test both your microphone and your speakers/headset (audio output devices) directly:
Device selection (microphone and output devices) is done by clicking the selection arrow.
If a microphone is connected, the volume is shown directly via a level meter. When you click Microphone Test, your microphone is recorded for 5 seconds and then played back immediately. You will hear the recording through your selected output device.
For Audio Output Device Test, a sequence of tones is played which you should hear immediately.
Summary of points that can cause problems:
I can’t be heard in YuLinc (my microphone & webcam don’t work)
Another application (e.g., MS Teams, Zoom, Unity phone systems) may be blocking access to your microphone. Please close the respective software.
Even if you have supposedly closed MS Teams, the program may still be running and continues to block access to your audio and video devices.
You will usually find the application in your taskbar. Right-click the application and quit it.
My connection is not optimal
If possible, use a LAN connection. With Wi-Fi there may be occasional signal dropouts that don’t show up during normal browsing, but can affect the virtual room.
I work via a Citrix environment
Use YuLinc outside of Citrix. Please contact your IT department in good time. If they have questions, they can contact our support directly:
06172 4526033 / support@netucate.com
A tip when choosing your browser:
If possible, use Google Chrome. Browsers such as Firefox, Edge Chromium, Opera, and Safari can of course also be used. Safari has a few limitations: the virtual background cannot be used, and when sharing, only the entire screen can be shared.
Browsers with many plugins can cause problems; use a browser without such plugins.
If there are problems, deleting the cache and cookies can also help.
YuLinc Gen2 network firewall or proxy server settings
Web server
Allow HTTPS traffic on port 443.
IP: 85.17.5.14
Signaling server
Secure WebSockets/WSS traffic on port 443.
IPs: 85.17.5.15, 85.17.5.16
Media server API
HTTPS traffic on port 443.
IPs: 85.17.5.17, 85.17.5.18, 85.17.5.23, 85.17.77.86, 95.211.76.180, 95.211.76.182, 95.211.76.184, 212.32.246.199
Media traffic
OPTION 1: Allow direct client connections to media servers
Allow RTP traffic TCP/UDP on port: 20000–40000
IPs: 85.17.5.17, 85.17.5.18, 85.17.5.23, 85.17.77.86, 95.211.76.180, 95.211.76.182, 95.211.76.184, 212.32.246.199
Domain: *.wbcnf.net
NOTE: Allow UDP/TCP port 3478 to turn.aquila-eu.wbcnf.net (if STUN is not allowed on your network)
OPTION 2: Allow client connections to media TURN/relay over UDP
Allow RTP traffic UDP on port: 3478 / 443
URI: turn.aquila-eu.wbcnf.net (95.168.161.3)
OPTION 3: Allow client connections to media TURN/relay over TCP/TLS
Allow RTP traffic TCP/TLS on port: 5349 / 443
URI: turn.aquila-eu.wbcnf.net (95.168.161.3)
Note: All signaling and media server endpoints can be whitelisted by allowing the wildcard domains *.netucate.net and *.wbcnf.net, if the client firewall allows such a configuration.
You can test the stability of your transmissions on the following page:
