| slovo | definícia |
t1
(foldoc) | T1
T1 line
T1 rate
An AT&T term for a digital carrier
facility used to transmit a DS1 formatted digital signal at
1.544 megabits per second.
T1 transmission uses a bipolar Return To Zero {alternate
mark inversion} line coding scheme to keep the DC carrier
component from saturating the line.
Although some consider T1 signaling obsolete, much equipment
operates at the "T1 rate" and such signals are either
combined for transmission via faster circuits, or
demultiplexed into 64 kilobit per second circuits for
distribution to individual subscribers.
T1 signals can be transported on unshielded twisted pair
telephone lines. The transmitted signal consists of pips of a
few hundred nanoseconds width, each inverted with respect to
the one preceding. At the sending end the signal is 1 volt,
and as received, greater than 0.01 volts. This requires
repeaters about every 6000 feet.
The information is contained in the timing of the signals, not
the polarity. When a long sequence of bits in the transmitted
information would cause no pip to be sent, "bit stuffing" is
used so the receiving apparatus will not lose track of the
sending clock.
A T1 circuit requires two twisted pair lines, one for each
direction. Some newer equipment uses the two lines at half
the T1 rate and in full-duplex mode; the sent and received
signals are separated at each end by components collectively
called a "hybrid". Although this technique requires more
sophisticated equipment and lowers the line length, an
advantage is that half the sent and half the received
information is mixed on any one line, making low-tech wiretaps
less a threat.
See also Integrated Services Digital Network.
(1994-11-23)
|
t1
(vera) | T1
[digital] Transmission link 1 [1.544 Mbit/s] (DS1, BIT)
|
| | podobné slovo | definícia |
ot1h
(encz) | OT1H,On The One Hand [zkr.] |
ut1
(wn) | UT1
n 1: the local time at the 0 meridian passing through Greenwich,
England; it is the same everywhere [syn: {Greenwich Mean
Time}, Greenwich Time, GMT, universal time, UT,
UT1] |
act1
(foldoc) | Act1
An actor language descended from Plasma.
["Concurrent Object Oriented Programming in Act1",
H. Lieberman in Object Oriented Concurrent Programming,
A. Yonezawa et al eds, MIT Press 1987].
(1994-11-08)
|
nt1
(foldoc) | Network Termination
NT1
(NT, NT1) A device connecting the customer's data or telephone
equipment to the local ISDN exchange carrier's line. The NT
device provides a connection for terminal equipment (TE) and
terminal adapter (TA) equipment to the local loop.
(1994-11-30)
|
rot13
(foldoc) | rot13
/rot ther'teen/ [Usenet: from "rotate alphabet 13 places"],
v. The simple Caesar-cypher encryption that replaces each
English letter with the one 13 places forward or back along
the alphabet, so that "The butler did it!" becomes "Gur ohgyre
qvq vg!" Most Usenet news reading and posting programs
include a rot13 feature. It is used to enclose the text in a
sealed wrapper that the reader must choose to open - e.g. for
posting things that might offend some readers, or spoilers.
A major advantage of rot13 over rot(N) for other N is that it
is self-inverse, so the same code can be used for encoding and
decoding.
[Jargon File]
|
t1 line
(foldoc) | T1
T1 line
T1 rate
An AT&T term for a digital carrier
facility used to transmit a DS1 formatted digital signal at
1.544 megabits per second.
T1 transmission uses a bipolar Return To Zero {alternate
mark inversion} line coding scheme to keep the DC carrier
component from saturating the line.
Although some consider T1 signaling obsolete, much equipment
operates at the "T1 rate" and such signals are either
combined for transmission via faster circuits, or
demultiplexed into 64 kilobit per second circuits for
distribution to individual subscribers.
T1 signals can be transported on unshielded twisted pair
telephone lines. The transmitted signal consists of pips of a
few hundred nanoseconds width, each inverted with respect to
the one preceding. At the sending end the signal is 1 volt,
and as received, greater than 0.01 volts. This requires
repeaters about every 6000 feet.
The information is contained in the timing of the signals, not
the polarity. When a long sequence of bits in the transmitted
information would cause no pip to be sent, "bit stuffing" is
used so the receiving apparatus will not lose track of the
sending clock.
A T1 circuit requires two twisted pair lines, one for each
direction. Some newer equipment uses the two lines at half
the T1 rate and in full-duplex mode; the sent and received
signals are separated at each end by components collectively
called a "hybrid". Although this technique requires more
sophisticated equipment and lowers the line length, an
advantage is that half the sent and half the received
information is mixed on any one line, making low-tech wiretaps
less a threat.
See also Integrated Services Digital Network.
(1994-11-23)
|
t1 rate
(foldoc) | T1
T1 line
T1 rate
An AT&T term for a digital carrier
facility used to transmit a DS1 formatted digital signal at
1.544 megabits per second.
T1 transmission uses a bipolar Return To Zero {alternate
mark inversion} line coding scheme to keep the DC carrier
component from saturating the line.
Although some consider T1 signaling obsolete, much equipment
operates at the "T1 rate" and such signals are either
combined for transmission via faster circuits, or
demultiplexed into 64 kilobit per second circuits for
distribution to individual subscribers.
T1 signals can be transported on unshielded twisted pair
telephone lines. The transmitted signal consists of pips of a
few hundred nanoseconds width, each inverted with respect to
the one preceding. At the sending end the signal is 1 volt,
and as received, greater than 0.01 volts. This requires
repeaters about every 6000 feet.
The information is contained in the timing of the signals, not
the polarity. When a long sequence of bits in the transmitted
information would cause no pip to be sent, "bit stuffing" is
used so the receiving apparatus will not lose track of the
sending clock.
A T1 circuit requires two twisted pair lines, one for each
direction. Some newer equipment uses the two lines at half
the T1 rate and in full-duplex mode; the sent and received
signals are separated at each end by components collectively
called a "hybrid". Although this technique requires more
sophisticated equipment and lowers the line length, an
advantage is that half the sent and half the received
information is mixed on any one line, making low-tech wiretaps
less a threat.
See also Integrated Services Digital Network.
(1994-11-23)
|
vt100
(foldoc) | vt100
DEC's definitive CRT video terminal of the
early/mid 1980s. Its control codes and escape sequences
still form the basis of the xterm set and of the ANSI or
IBM PC standards. VT100 compatibility is still provided by
most terminal emulators.
[On-line documentation?]
(1995-03-28)
|
x3t10
(foldoc) | X3T10
The ATA standards body.
(1996-10-16)
|
rot13
(jargon) | rot13
/rot ther'teen/, n.,v.
[Usenet: from ‘rotate alphabet 13 places’] The simple Caesar-cypher
encryption that replaces each English letter with the one 13 places forward
or back along the alphabet, so that “The butler did it!” becomes “Gur
ohgyre qvq vg!” Most Usenet news reading and posting programs include a
rot13 feature. It is used to enclose the text in a sealed wrapper that the
reader must choose to open — e.g., for posting things that might offend
some readers, or spoilers. A major advantage of rot13 over rot(N) for
other N is that it is self-inverse, so the same code can be used for
encoding and decoding. See also spoiler space, which has partly displaced
rot13 since non-Unix-based newsreaders became common.
|
00databasedictfmt1130
(vera) | 00-database-dictfmt-1.13.0 |
ft1
(vera) | FT1
Fractional T1 (ISDN, T1, DS-0, DS-1)
|
mpt1327
(vera) | MPT1327
[British] Ministry of Post and Telecommunications [standard] 1327
|
nt1
(vera) | NT1
Network Termination [unit] 1 (ISDN)
|
vt100
(vera) | VT100
Virtual Terminal 100 (DEC), "VT-100"
|
00databasedictfmt1130
(devil) | 00-database-dictfmt-1.13.0 |
00databasedictfmt1131
(elements) | 00-database-dictfmt-1.13.1 |
|