Using the HP DTC Manager/UX

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subnet mask A 32-bit number that enables the node address portion of an IP address in a
subnetwork to be identified. Bits in the subnet mask are set to 1 if the network treats
the corresponding bit in the IP address as part of the network address, and to 0 if the
network treats the corresponding bit in the IP address as part of the node address.
The subnet mask 11111111 11111111 11111111 00000000 (or 255.255.255.0)
indicates that the first three bytes identify the network and the fourth byte identifies
the node.
switching See DTC switching.
synchronous A mode of operation or transmission in which a continuous data stream is generated
without intervals between characters. The data stream is synchronized by clock
signals at the receiver and transmitter. As a result, fast transmission speeds (above
9600 bps) are attainable.
system configuration The method for telling the operating system which peripheral I/O devices are
attached to the DTC and which parameters are required for system operation.