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94 Megabit Modem 400F User Manual
SEF Severely Errored Frames is the incoming signal has at least four consecutive errored
framing patterns.
SES Severely Errored Seconds is the seconds during which more than 2,500 bipolar errors
are detected on the line.
session The time during which two computers maintain a communication connection. An
example is a connection configured between the Megabit Modem 400F and the
service provider.
SNMP Simple Network Management Protocol is a protocol that specifies how to send
information between a NMS and managed devices on a network. The managed
devices run a program called an agent. The agent interprets SNMP request and
responds to them. SNMP is used to set device configurations, read device
configurations or read the device status.
Spanning Tree A bridging protocol that detects and prevents loops from occurring in a system
containing multiple bridges.
subnet mask A type of IP address that allows a site to use a single IP address for multiple physical
networks.
TCP Transmission Control Protocol is a transport protocol used to map inbound traffic
(from a remote IP address) to an internal (LAN) IP address. Establishes connection
with remote user before data transmission.
TCP/IP Transmission Control Protocol/Internet Protocol is a protocol used for
communications between computers over networks and the internet.
TFTP Trivial File Transfer Protocol is a protocol used to download card images or other files
from an external TFTP server to the NVRAM of any installed cards, or to upload files
from an installed card to an external TFTP server.
trap receivers PCs configured to receive SNMP traps (messages).
traps Autonomous, interrupt-driven, SNMP messages sent from a managed node to a
network management station to indicate that an event has occurred.
UAS UnAvailable Seconds is the number of seconds during which the line is unavailable.
UBR Unspecified Bit Rate is an ATM traffic type used for LAN traffic. When network
congestion occurs, the data is stored in a buffer until it can be sent.
UDP User Datagram Protocol is a transport protocol used to map inbound traffic (from a
remote IP address) to an internal (LAN) IP address. Uses a protocol port number for
the destination at the remote location.
upstream traffic Communications from a user to a service provider.