Vbrick Accessories; Serial Port Passthrough - VBrick 9000 Getting Started Manual

Specifically, multiple IP Addresses are mapped into the same physical layer address. For
example, all IP multicast addresses with the same or differing first octet, and the second octet
differing by exactly 128, map to the same physical address (226.5.5.4, 227.5.5.4, and
228.133.5.4 all map to the same physical address). Another factor to keep in mind when
assigning multicast addresses is that 224.x.x.x is a range containing reserved addresses,
particularly in the range 224.0.0.x. For example, 224.0.0.1 is the 'all hosts' multicast address
and 224.0.0.2 is the 'all routers' reserved address. Other 224.0.0.X numbers are reserved for
RIP, OSPF, DVMRP, etc. Here are some recommended rules for multicast IP Address
assignment:
1. Do not use 224 in the first octet since many of these are reserved. (VBrick encoders
enforce this rule.)
2. Use a digit between (225–239) for the first octet and standardize on it for each network.
3. In the second octet, either use numbers from 1–127, or 129–255, do not mix ranges on a
given network.

VBrick Accessories

VBrick encoders have various optional hardware accessories. These work directly with
VBrick encoders or through the use of ActiveX control software, also available from VBrick.
For information about microphones, cameras and other VBrick hardware accessories, please
contact VBrick directly. ActiveX controls for cameras and other software accessories are also
available from VBrick.

Serial Port Passthrough

When configured properly, VBricks provide full duplex, end-to-end transparent passthrough
of user data from one VBrick to another, or to other IP devices. You can use COM1 or
COM2 for passthrough. When COM1 Passthrough is enabled, the management port and CLI
are not available. The serial ports operate at the configured baud rate (e.g. 110 to 115.2K
bps). See the Encoder Admin Guide for passthrough configuration details. Some common
applications include:
• Remote control of a camera, pan-tilt-zoom.
• Remote control of a security door lock.
• Low speed data transport.
• Data collaboration between PCs.
Passthrough mode is used to send control information from one VBrick to another
Note
and may not support sustained data at higher data rates.
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