ADC CUDA 3 Administration Manual page 608

606 A C: G
PPENDIX LOSSARY
Subnet
Subnet Mask
Subnetwork
Access Protocol
(SNAP)
Subscriber
Subsplit
TCP
TFTP
Tick
Tilt
TLV
Transmission
Control Protocol
(TCP)
Transmission
Convergence
Sublayer
A network subdivided into networks or subnets. When subnetting is used,
the host portion of the IP address is divided into a subnet number and a host
number. Hosts and routers identify the bits used for the network and subnet
number through the use of a subnet mask.
A bit mask that is logically ANDed with the destination IP address of an IP
packet to determine the network address. A router routes packets using the
network address.
An extension of the LLC header to accommodate the use of 802-type
networks as IP networks.
A user in the home who accesses a data service.
A frequency-division scheme that allows bi-directional traffic on a single
cable. Reverse path signals come to the head-end from 5 to 30 (up to 42 on
Extended Subsplit systems) MHz. Forward path signals go from the head-end
from 50 or 54 MHz to the upper frequency limit of the cable network.
See Transmission Control Protocol.
See Trivial File-Transfer Protocol.
6.25-microsecond time intervals that are the reference for upstream mini-slot
definition and upstream transmission times.
Maximum difference in transmission gain of a cable television system over a
given bandwidth (typically the entire forward operating frequency
range).instant at which the last bit of the same PDU crosses a second
designated boundary.
See Type/Length/Value.
A reliable stream service which operates at the transport-layer Internet
protocol which ensures successful end-to-end delivery of data packets
without error.
A sublayer of the Physical Layer that provides an interface between the Data
Link Layer and the PMD Sublayer.
ADC Telecommunications, Inc.