Prior to the development of DTMF, numbers were dialed on automated telephone systems by means of pulse dialing ( Dial Pulse or DP in the U. S .) or loop disconnect ( LD ) signaling, which functions by rapidly disconnecting and re-connecting the calling party's telephone line, similar to flicking a light switch on and off.

Prior to 2001, U. S. law restricted trading such that insiders mainly traded during windows when their inside information was public, such as soon after earnings releases.

Prior to 1979, the symbol < span style =" font-size: 112 %"></ span > ( script small l, U + 2113 ), came into common use in some countries ; for example, it was recommended by South African Bureau of Standards publication M33 and Canada in the 1970s.

Prior to World War I, the British explosives chemist Oswald Silberrad obtained British and U. S. patents for a series of plastic explosives called " Nitrols ", composed of nitrated aromatics, collodion, and oxidising inorganic salts.

Prior to uniform ( U. S. A .) federal D. O. T.

Prior to 1993, the U. S. Army employed the Commercial Heavy Equipment Transporter ( C-HET ), which consists of either the M746 or the M911 truck tractor, with the M747 semitrailer.

* Prior to the passage of the Statute of Westminster, the U. K. government continued to have a significant role in Irish governance.

Prior to United States Supreme Court decisions Reynolds v. Sims and Baker v. Carr in the 1960s, the basis of representation in most state legislatures was modeled on that of the U. S. Congress: the members of the smaller chamber represented geography and members of the larger chamber represented population.

Prior to the beginning of negotiations, the Japanese allegedly made the Taft-Katsura Agreement with the U. S. in July 1905, which agreed to Japanese control of Korea, in return for American dominance in the Philippines.

Prior to independence, the act allowed the U. S to maintain military forces in the Philippines and to call all military forces of the Philippine government into U. S. military service.

Prior to the passage of the amendment, residents of Washington, D. C. were forbidden from voting for President or Vice President as the District is not a U. S. state.

Prior to the early 1980s, season-ending cliffhangers were rare on U. S. television.

The Reagan Doctrine was especially significant because it represented a substantial shift in the post – World War II foreign policy of the U. S. Prior to the Reagan Doctrine, U. S. foreign policy in the Cold War was rooted in " containment ," as originally defined by George F. Kennan, John Foster Dulles, and other post – World War II U. S. foreign policy experts.

Prior to I-37, the route between Corpus Christi and San Antonio was served by a combination of State Highway 9 ( SH 9 ) from Corpus Christi to Three Rivers and U. S. 281 ( US 281 ) from Three Rivers to San Antonio.

Prior to the role of ' Trapper John ', Rogers appeared on television in various roles in both dramas and sitcoms such as The Invaders, The F. B. I., Gunsmoke, Gomer Pyle, U. S. M. C., The Fugitive, and had a small supporting role in the 1967 movie Cool Hand Luke.

Prior to the 1888 Republican National Convention, federal judge Walter Q. Gresham sought Fairbanks's help in seeking the nomination for U. S. President.

Prior to being built as a four-lane road, U. S. 31 was a twisting two-lane road that is still largely visible today.

Prior to Delta Air Lines establishing service between New York City and Accra, Ghana, on December 11, 2006, NAA's JFK-ACC and BWI-BJL services were the only scheduled non-stop service between the U. S. and West Africa operated by a U. S. airline for several years.

Prior to its building, New Salem, which has always been the southeast corner of Franklin County, did not extend much further south than the village of Cooleyville, now along U. S. Route 202.

Prior to 1951, there was no method that the U. S. government could use to broadcast warnings to citizens in the event of an emergency.

Prior Lake is a city southwest of downtown Minneapolis in Scott County in the U. S. state of Minnesota.

Prior to 1954 I imagine that a majority of Southerners would have voted against the Confederacy.

Prior to 1942, automobiles were the individual responsibility of the agency to which assigned.

Prior to 1960, in order to provide matching for the minimum ( base ) allotment, State funds had to equal 1954 State funds.

Prior to and since 1960 the rest of the support allotment is matched at rates related to the fiscal capacity of the State, with a pivot of 40% State ( or 60% Federal ) participation in total program costs.

Prior to World War 2, there was a higher percentage of endogamous marriages than after World War 2.

Prior to the featured race, the stewards announced that apprentice James P. Verrone is suspended ten days for crowding horses and crossing the field sharply in two races on Wednesday.

Prior to that he was associated with Long Island University in Brooklyn.

With the Prior Analytics, Aristotle is credited with the earliest study of formal logic, and his conception of it was the dominant form of Western logic until 19th century advances in mathematical logic.

Prior to Kennedy Center, it screened films in the auditorium of the National Gallery of Art.

Prior to meeting Mallowan, Christie had not had any extensive brushes with archaeology, but once the two married they made sure to only go to sites where they could work together.

Alastair Cook scored 189 and both Ian Bell and Matt Prior made centuries.

Prior to this, the monastery would be a mere priory, headed by a prior who acts as superior but without the same degree of legal authority that an abbot has.

Abbot Francis Michael and Prior Anthony Delisi ( on the left ) of Monastery of the Holy Spirit, a Trappist monastery in Conyers, Georgia, USA.

* Accreditation of Prior Learning ( UK ) refers to a reduction in the amount of study required to pass a degree, due to previous experience or study.

Prior to modern times, there was no distinction between architects, engineers and often artists, and the title used varied depending on geographical location.

# Prior to being drawn and enabled, one is unable to believe … able only to resist.

Prior to leaving Mahallat, Hasan Ali Shah equipped himself with letters appointing him to the governorship of Kerman.

Prior to the Akkadian period the progressive salinisation of the soils, produced by poorly drained irrigation, had been reducing yields of wheat in the southern part of the country, leading to the conversion to more salt-tolerant barley growing.

He wrote many commentaries on the works of Aristotle, extant are those on the Prior Analytics, Topics, Meteorology, Sense and Sensibilia, and Metaphysics.

* J. Barnes, S. Bobzien, K. Flannery, K. Ierodiakonou, 1991, Alexander of Aphrodisias: On Aristotle Prior Analytics 1. 1-7.