
USB microphones
The Remote USB driver (on the receiver) supports the USB isochronous data type, which is commonly used for
streaming data such as that generated by audio and video devices. This enables certain isochronous USB
microphones to be accessed directly by the sender in the same manner as other USB devices.
To remotely attach USB microphones to the sender, either of these Remote USB Conguration settings can be
selected:
●
USB devices are Remote—If selected, a USB microphone can be accessed anytime by the sender.
●
USB devices are Local/Remote—If selected, how the USB microphone can be accessed by the sender
depends on when the microphone is connected to the receiver relative to establishment of the RGS
connection:
◦
If the microphone is connected to the receiver after establishment of an RGS connection, the
microphone will be a remote device only and can be accessed directly by the sender.
TIP: The Windows Recording devices dialog in the sender allows the user to set the default
sound recording device (microphone).
Remote USB Access Control List
RGS Sender supports an Access Control List (ACL) le that contains rules that specify whether to allow a
Remote USB connection from a USB device on the receiver side.
Each rule in the ACL le has a type of allow or deny. The rules are evaluated for each Remote USB
connection request as described below:
●
If any rule indicates the USB connection should be denied, the connection is denied, regardless of any
other rule.
●
If any rule indicates the USB connection should be allowed, and if there are no rules that deny the
connection, the connection is allowed.
●
If no rules match at all, the connection is denied.
The ACL le is implemented in XML format and is accompanied by an XSD (XML Schema Denition) le that
denes the XML elements. The default ACL le hprDefaultUsbAcl.xml and the XSD le
hprUsbAcl.xsd are both in the RGS Sender installation directory.
TIP: You can specify dierent les using the RGS Sender Conguration tool (see Using the RGS Sender
Conguration tool on page 54).
The default ACL le contains the following contents, which allows all USB connections to be made:
<hprUsbAcl>
<ruleset>
<rule type="allow">
<name>Allow all USB devices (HP default)</name>
</rule>
</ruleset>
</hprUsbAcl>
Rules can contain the lters described in the following table.
TIP: See hprUsbAcl.xsd for examples of using lters.
Remote USB 41
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