HP 3162 manual GL-8

Glossary

Telnet	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.
trap (SNMP)	A notification message to the SNMP manager when an unusual event occurs on a network
	device, such as a reinitialization.
T1	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.
TX	Transmit. To send signals from a device.
TXD	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.
UAS	Unavailable Seconds. A count of one-second intervals when service is unavailable.
UDP	User Datagram Protocol. A TCP/IP protocol describing how messages reach application
	programs within a destination computer.
UL	Underwriter’s Laboratories, Inc. An organization which promotes product safety.
V.24	An ITU-T standard for a low-speed, 25-position, DCE/DTE interface.
V.35	An ITU-T standard for a high-speed, 34-position, DCE/DTE interface.
V.54	An ITU-T standard for local and remote diagnostic loopback tests.
V.54 Loop 2	An ITU-T standard for a data channel loopback (DCLB).
V.54 Loop 3	An ITU-T standard for a data terminal loopback (DTLB).
Vac	Volts alternating current.
Vdc	Volts direct current.
VF	Voice Frequency. The part of the audio frequency range used to transmit voice sound
	(usually 300 Hz to 3400 Hz). This band is used by the modem for its modulated signal.
WAN	Wide Area Network. A network that spans a large geographic area.
warmStart trap	An SNMP trap that indicates that the device has reinitialized itself.
XTXC	External Transmit Clock. V.24 circuit 113.
Yellow Alarm	An outgoing signal transmitted when a DS1 terminal has determined that it has lost the
	incoming signal.

GL-8 August 2000 3162-A2-GB20-40