For comparison, while single-line, voice-grade copper systems longer than a couple of kilometers require in-line signal repeaters for satisfactory performance; it is not unusual for optical systems to go over, with no active or passive processing.
22.
The computer could pulse the hook line to simulate pulse dialing or hang up, and read the status pin to look for line signals like ringing or busy ( any noise on the line was reported as " 1 " ).
23.
CARSON _ The recent announcement that Savannah, Ga .-based Carson Inc . will acquire Johnson Products'hair care and cosmetics lines signals illustrates that while the U . S . market for ethnic hair and beauty products is consolidating it remains highly competitive.
24.
The term refers to devices capable of displaying 480-line or 576-line signals in progressive scan, commonly referred to as 480p ( PAL ) respectively, as opposed to interlaced scanning, commonly referred to as 480i ( NTSC ) or 576i ( PAL ).
25.
The SBL Line signal system is based on state-of-the-art communications-based train control ( CBTC ) technology, utilizing two-way digital radio communications between intelligent trains, and wayside equipment, and a network of ATS / ATO computers designed for very high system reliability and availability.
26.
An exponential growth in PSA values appears as a straight line on a semi-log plot, so that a new PSA value significantly above the straight line signals a " switch " to a new and significantly higher growth rate, i . e ., a higher PSA velocity.
27.
In some cases scuba divers may be connected by a tether, or buddy line, which allows communication by line signals, and professional scuba divers often tow a surface marker buoy, which may be used to transmit a very limited range of signals to surface personnel, mainly location of the diver, and if the diver needs help.
28.
Instead of the usual practice of locating all signals on the same side of their respective tracks ( GWR practice was to commonly put them to the right of the track, the same side their drivers stood on the locomotive ), the Relief Line signals were on the left, and the Main Line signals were on the right.
29.
Instead of the usual practice of locating all signals on the same side of their respective tracks ( GWR practice was to commonly put them to the right of the track, the same side their drivers stood on the locomotive ), the Relief Line signals were on the left, and the Main Line signals were on the right.
