Glossary
GL-8 3162-A2-GB20-30
March 1999
Receive. To obtain transmitted signals.
Receive Clock. V.24 circuit 115.
Received Data. Pin 3 of the EIA-232 interface that is used by the DTE to receive data from
the modem. Conversely, the modem uses Pin 3 to transmit data to the DTE.
Shared Diagnostic Control Panel. A feature that allows carrier-mounted devices to share
the same diagnostic control panel.
A test that checks most hardware components when power is applied to the device or a
reset is initiated.
A device that offers a specific service, such as database management, to a client.
Severely Errored Seconds. Usually defined as a second during which a specific number of
CRC errors was exceeded, or an OOF or other critical error occurred.
A command providing write access to SNMP MIB objects.
Serial Line Internet Protocol. Protocol for serial operation on an internet.
Simple Network Management Protocol. Protocol for open networking management.
Status branch of the CSU menu tree.
Self Test Health branch of the CSU menu tree.
Status Event Register. Records the occurrence of certain alarm conditions.
A portion of a network, which may be a physically independent network segment, that
shares a network address with other portions of the network and is distinguished by a
subnet number. A subnet is to a network what a network is to an internet.
A number that identifies the subnet portion of a network address. The subnet mask is a
32-bit Internet address written in dotted-decimal notation with all the 1s in the network and
subnet portions of the address.
Transmission Control Protocol/Internet Protocol. The dominant protocol suite in the
worldwide Internet, TCP allows a process on one machine to send data to a process on
another machine using the IP. TCP can be used as a full-duplex or one-way simplex
connection.
Virtual terminal protocol in the Internet suite of protocols. Allows the user of one host
computer to log into a remote host computer and interact as a normal terminal user of the
remote host.
A notification message to the SNMP manager when an unusual event occurs on a network
device, such as a reinitialization.
Test Status branch of the CSU menu tree.
A term for a digital carrier facility used to transmit a DS1 formatted digital signal at
1.544 Mbps. It is used primarily in North America.
Transmit. To send signals from a device.
Transmit Data. Pin 2 of the EIA-232 interface that is used by the DTE to transmit data to
the modem. Conversely, the modem uses Pin 2 to receive data from the DTE.
Unavailable Seconds. A count of one-second intervals when service is unavailable.
User Datagram Protocol. A TCP/IP protocol describing how messages reach application
programs within a destination computer.
Underwriter’s Laboratories, Inc. An organization which promotes product safety.
RX
RXC
RXD
SDCP
self-test
server
SES
Set (SNMP)
SLIP
SNMP
Stat branch
STest branch
StEvent
subnet
subnet mask
TCP/IP
Telnet
trap (SNMP)
TStat branch
T1
TX
TXD
UAS
UDP
UL