VCast Pro Appendix

Frequently Asked Questions

Question	Answer
What is the minimum Wi-Fi signal strength for a reliable vCast Pro network?	In order to have reliable network signal strength to experience vCast Pro optimally, we suggest the minimum Wi-Fi signal strength for a reliable packet delivery to not be lower than -60 dBm.
What is the minimum video streaming network bandwidth recommended for reliable vCast Pro casting?	Minimum bandwidth recommendation: 1 MB/s (static picture < 100 KB/s; peak value of a dynamic picture is about 1 MB/s). NOTE: Network Latency 1~30 ms: Very Fast; smooth screen casting. 31~50 ms: Good; can screen cast normally, no obvious delay. 51~100 ms: Normal; slight latency may occur when video/pictures are streaming. ≥ 100 ms: Poor; there may be freezing and droppage.
Will multiple screen casting cause latency issues, especially with video streaming content sharing?	Multiple screen casting via video streaming can be a heavy load on a network. To experience ViewBoard Cast with multiple screen sharing with a reliable signal, we suggest the minimum Wi-Fi signal strength is not lower than -60 dBm and the minimum bandwidth recommendation is 1 MB/s. If there is still a latency issue, please reduce vCastSender to not exceed two devices for the best performance.

Troubleshooting

This section describes some common problems that you may experience when using vCast Pro. Additionally, you can contact your sales representative or IT department if you are experiencing any problems.

Problem or Issue	Possible Solution
Device List is not displayed	Please make sure you have followed all instructions for connecting to the same network environment. For more information, see Before Launching vCast Pro.
Unable to connect to vCast Download page	Ensure that the firewall for your operating system permits vCast Pro to run and communicate on your network. This message will only appear if the server is using a self-signed certificate with an invalid trust chain.

Network Information

vCast Pro & vCastSender Service

Network Information

The ViewBoard and client devices can connect to both the same subnet and cross subnet. If on the same subnet, PIN code input can be disabled.
vCast Pro supports cross subnet connectivity via PIN code input. Please ensure PIN code input is enabled. To learn more, see Cast Settings.

NOTE: For a more stable connection, it is recommended to have any ViewBoard or display connected via LAN by Ethernet cable, and client devices on a 5 GHz Wi-Fi band.

Ports:

TCP 56789, 25123, 8121 & 8000 (Controlling message port & client device audio transfer)

TCP 8600 (BYOM)

TCP 53000 (Request share screen)

TCP 52020 (Reverse control)

TCP 52025 (Reverse control for ViewBoard Cast Button)

TCP 52030 (Status sync)

TCP 52040 (Moderator mode)

UDP 48689, 25123 (Device searching and broadcast & client device audio transfer)

UDP 5353 (Multicast search device protocol)

Port and DNS Activation:

Port: 443

DNS: https://vcastactivate.viewsonic.com

OTA Service

Server Port: TCP 443

Server FQDN Name: https://vcastupdate.viewsonic.com

AirPlay Service

NOTE: Please ensure that mDNS is enabled on the network/access point/wireless controller (if applicable).

Network Information

Ports

TCP 51040, 51030, 51020 & 51010

UDP 5353 (mDNS to broadcast Airplay)

UDP random port with a range of 52000~53000 (Transfer audio; assigned by AirPlay protocol)

How to Verify AirPlay is Broadcasting

Ensure that your iOS device and the ViewBoard or display are connected to the same subnet.
Open the Control Center and select AirPlay Mirroring on the iOS device (e.g., iPhone/iPad).
Find a device prefixed with “Cast-xxxx”.
If “Cast-xxxx” is showing then this confirms that vCast is broadcasting AirPlay services.
Click on the broadcasted “Cast-xxxx” device to mirror your iOS device to the ViewBoard.

Customer Service

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