Faq - ViewSonic SC-T25 User Manual

15. FAQ

Audio tips for the SC-T25 and Citrix HDX
Some tips on audio...Please ensure that you plug in your USB audio Devices before
starting the SC-T25 (or reboot after plugging in Devices). The SC-T25 will redirect
audio in this order: USB, HDMI, analogue. If you encounter problems, try this:
a. while not logged into your virtual desktop, type ctrl+alt+t on the SC-T25 to
open xterm
b. type "amixer cset numid=3 2" in the xterm window. This sets the audio
Device by the last number in your config line. Using 2 forces audio to HDMI.
1 forces analogue audio, and while 0 is automatic.
How does the ViewSonic Device Management 3.0 Software
(VDM3.0) discover the Devices running VTOS?
There are three discovery methods available to VDM3.0, the default two methods
are UDP Broadcast packets which are broadcast at 5 second intervals, (this interval
can be adjusted under VDM3.0 / Edit / Settings) and DHCP Option Flags. The UDP
broadcasts can be toggled on and off by clicking on the VDM3.0 Discover Icon
The Third Discovery method is to configure an already discovered Device by using
VDM3.0 / Tools / Configuration / VDM3.0 server configuration, just select the Static
check box and enter the Name or IP Address of the PC running VDM3.0. You can
leave the default Port at 5808, if you change the default Port you will also need to
change the default VDM3.0 Port using VDM3.0 / Edit / Settings. You can also use
the local configuration menu on the Device running VTOS to configure these settings
Once the Thin Client has been discovered by VDM3.0 commands can be sent to
it. UDP Discovery can only be used on the same Subnet as Thin Clients, if you are
shipping your Thin Clients to a regional Office or they are situated on a different
Subnet you will need to use DHCP Option Flags or the third method above.
VDM3.0 communicates with the Thin Clients running VTOS using a secure SSL
connection, this allows a Thin Client that has been configured using DHCP Option
Flags or the third Discovery method above to be located anywhere in the World. The
Thin Clients can even be behind multiple Firewalls as they will tunnel out initiating
the SSL connection to VDM3.0
DHCP option flags can be used to pass a default configuration to VTOS, consisting
of VDM3.0 location and Port number, the IP Address or name of the Remote
Desktop Server to connect to and the Protocol to use such as, WEB, HDX etc.
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