Safety Instructions

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NETWORKING
This section provides a step-by-step guide on how to properly connect the
PCM96 Surround to a Local Area Network (LAN) for several different net-
work architectures. The first topology is a simple direct connection using the
provided Ethernet cable. The second method describes how to connect and
configure several PCM96 Surround units to create an isolated network using
an Ethernet switch with static or with DHCP. This section concludes with
some further networking considerations and troubleshooting tips that will
help with connecting to your PCM96 Surround via Ethernet. If your appli-
cation is more than these simple examples we recommend that you involve a
trained Ethernet network administrator in the design and commissioning of
your system.
Careful planning needs be made before placing a PCM96 Surround on a
network that provides any access to the public. Some examples of public
access are direct access to the unit from the Internet, an unsecured or weakly
secured wireless network, a network jack in a public area that provides net-
work access to the PCM96 Surround, or having a computer on the LAN
that is not secured so that someone could use it to reconfigure the PCM96
Surround. It is highly recommended that the equipment be placed on a pro-
tected, isolated network that does not have any connection to the public to
prevent unauthorized users from reconfiguring the unit. Please refer to the
VPN portion of this section for more information. Factory defaults for the
Internet Protocol (IP) settings for the PCM96 Surround are as follows:
Auto-IP/DHCP Address: 169.254.x.x (where “x.x” is determined by
the PCM96 Surround box numbers)
Subnet Mask: 255.255.0.0
Gateway: 0.0.0.0
DHCP Support: Enabled
OVERVIEW OF TCP/IP BASICS
IP ADDRESS
An identifier for a computer or device on a TCP/IP network. Each device
in a network has its own IP address to identify it. Example: 126.126.17.42.
Networks using the TCP/IP protocol route messages based on the IP address
of the destination. An IP address is made of four numbers separated by peri-
ods. Each number can be zero to 255. The last number should not be a zero
or 255. For example, 126.126.17.1 could be an IP address. 126.126.17.0
would not be a valid IP address. A TCP/ IP or IP address has two parts:
the NETWORK ID and the HOST ID. The NETWORK ID identifies
the network, and the HOST ID identifies either the subnet and device, or
just the device if there is no subnet. The subnet mask is a code that indi-
cates which part of the TCP/IP address is the NETWORK ID and which
part is the HOST ID. In subnet-mask code, 255 means “This part of the
address is the NETWORK ID”. Example: Suppose the IP ADDRESS of
a device is 192.168.xx.yy and the SUBNET MASK is 255.255.x.y. That
means, (192.168) is the NETWORK ID. The remaining set of numbers (xx.
yy) is the HOST ID. If your network stands alone (it is not part of a larger
network) then the HOST ID identifies each device in the network. If your
network is part of a venue’s larger network, your network is actually a sub-
network or subnet.