Global Information Lookup Global Information

Busy line interrupt information


Busy line interrupt, also known as emergency breakthrough, is a function of telephone land line carriers in which a telephone operator, by request of a caller, interrupts an existing phone conversation between other parties.[1] This is especially useful for services without call waiting.

Much like long distance calling before the late 1990s, busy line interrupt is a service provided, for instance, to allow people to contact a family member in the event of an emergency if the receiving party's line is busy.

The service is not free and is charged whether or not the calling party can reach the person on the other end (as the phone just might be off the hook for privacy reasons or the line could be busy carrying a modem call. For this reason, it is usually only used in cases of emergencies as noted above.

  1. ^ INWARD ASSISTANCE OPERATOR SERVICES

and 20 Related for: Busy line interrupt information

Request time (Page generated in 0.867 seconds.)

Busy line interrupt

Last Update:

Busy line interrupt, also known as emergency breakthrough, is a function of telephone land line carriers in which a telephone operator, by request of...

Word Count : 171

Operator assistance

Last Update:

in on a live call to ask the caller to clear the line for an incoming call (busy line interruption, or BLI). The latter service is often utilized by...

Word Count : 771

Phreaking

Last Update:

the metro. Telephones portal 2600: The Hacker Quarterly BlueBEEP Busy line interrupt Novation CAT Phone hacking Telephone tapping Phone Losers of America...

Word Count : 4361

Busy signal

Last Update:

Korean busy signal Listen to a busy signal from North America, Hong Kong, and South Korea. Example of an old North American busy signal Listen to a busy signal...

Word Count : 938

Beep line

Last Update:

offices to quash beep lines included making the busy tone louder or by increasing the interruptions per minute of the tone—to the chagrin of regular...

Word Count : 1196

Operating system

Last Update:

computer may implement interrupts for I/O completion, avoiding the need for polling or busy waiting. Some computers require an interrupt for each character...

Word Count : 10982

Parallel port

Last Update:

with each received character (busy-by-character). This reduces the number of BUSY toggles and the resulting interruptions on both sides. A 1997 update...

Word Count : 3861

Unibus

Last Update:

an interrupt cycle, a fifth style of transfer was automatically invoked to convey an interrupt vector from the interrupting device to the interrupt-fielding...

Word Count : 659

Data General Nova

Last Update:

convention, a device that was masked out was not supposed to raise the interrupt line, but the CPU had no means of enforcing this. Most devices that were...

Word Count : 9266

Serial Peripheral Interface

Last Update:

different from above. An implementation might involve busy waiting for CS to fall or triggering an interrupt routine when CS falls, and then shifting in and...

Word Count : 6114

Line 3 Scarborough

Last Update:

Scarborough RT train will run before line is demolished". @TTChelps (June 22, 2023). "Crews were busy installing signage to help Line 3 Scarborough customers stay...

Word Count : 7278

Footsteps in the Fog

Last Update:

Francis the Talking Mule and became busy doing comedies with animals. He continued to seek finance for The Interruption saying he wanted to "remind producers...

Word Count : 1555

ATmega328

Last Update:

3 flexible timer/counters with compare modes, internal and external interrupts, serial programmable USART, a byte-oriented 2-wire serial interface, SPI...

Word Count : 511

Interruption science

Last Update:

interruption and decline in productivity. This technique was used in the aim to provide calmer and less disruptive work spaces.: 1  If users are busy...

Word Count : 2311

Infinite loop

Last Update:

responsive, infinite loops can often be interrupted by sending a signal to the process (such as SIGINT in Unix), or an interrupt to the processor, causing the current...

Word Count : 2613

IRT Flushing Line

Last Update:

The IRT Flushing Line is a rapid transit route of the New York City Subway system, named for its eastern terminal in Flushing, Queens. It is operated as...

Word Count : 9620

63rd Street lines

Last Update:

station at 61st Street would worsen congestion on the already busy Lexington Avenue Line. A third track was added to the plans for the tunnel in April...

Word Count : 9201

Mutual exclusion

Last Update:

achieve mutual exclusion is to disable interrupts during a process's critical section. This will prevent any interrupt service routines from running (effectively...

Word Count : 2336

Bay Area Rapid Transit

Last Update:

spacing). Trains on each primary service run every 20 minutes, except the busy Yellow Line, which operates every 10 minutes on weekdays. Segments served by multiple...

Word Count : 12824

POKEY

Last Update:

cycles (scan line) taking a frame (1/60th second) to produce a result. The OS reads the Pot values during its Vertical Blank Interrupt (VBI) and copies...

Word Count : 2798

PDF Search Engine © AllGlobal.net