What's the difference between telegraphy and telephony?

Telegraphy


Definition:

  • (n.) The science or art of constructing, or of communicating by means of, telegraphs; as, submarine telegraphy.

Example Sentences:

  • (1) The compression technique is a variation of the Consultive Committee on International Telephony and Telegraphy Joint Photograph Experts Group compression that suppresses the blocking of the discrete cosine transform except in areas of very high contrast.
  • (2) The recognition of telegraphy disturbed by noise seems to follow the relations known from experiments with short-tone audiometry.
  • (3) These facts should be taken into consideration when training telegraphy operators as well as in the construction of radio receivers to permit listening at low frequencies.
  • (4) He was susceptible to get-rich-quick schemes: the ventures he invested in and promoted – even as he was writing his greatest books – included vineyards, a steam generator, a steam pulley, a watch company, an insurance company, marine telegraphy, a food supplement called Plasmon, a chalk engraving process called Kaolatype, self-adjusting suspenders and the Paige typesetting machine, which bankrupted him at the height of his fame and forced him back on to the lecture circuit to pay his debts, in part, it's been suggested, to protect the value of his "honourable" brand.
  • (5) The licence fee has funded the BBC since 1923, when the Wireless Telegraphy Act was introduced to cover radio sets.

Telephony


Definition:

  • (n.) The art or process of reproducing sounds at a distance, as with the telephone.

Example Sentences:

  • (1) While robust discussions are under way across the nation, in Congress, and at the White House, the question for this court is whether the government's bulk telephony metadata program is lawful.
  • (2) The bulk telephony metadata collection programme represents the government's counter-punch: connecting fragmented and fleeting communications to re-construct and eliminate al-Qaida's terror network.” The ACLU case against the NSA was dismissed primarily on the grounds that bulk collection was authorised under existing laws allowing “relevant” data collection to be authorised by secret US courts.
  • (3) The compression technique is a variation of the Consultive Committee on International Telephony and Telegraphy Joint Photograph Experts Group compression that suppresses the blocking of the discrete cosine transform except in areas of very high contrast.
  • (4) Skype, meanwhile, will today announce that it has created a version of its popular free internet telephony service for Nokia's Symbian operating system, which is already used by more than 200m mobile phones worldwide.
  • (5) We recommend that legislation should be enacted that terminates the storage of bulk telephony meta-data by the government under section 215, and transitions as soon as reasonably possible to a system in which such meta-data is held instead either by private providers or by a private third party.
  • (6) Their current plans aim to do away with bulk collection of telephony metadata, and fix some of the loopholes associated with internet bulk collection.
  • (7) In the Patriot Act telephony metadata fiasco, legal formalism completely disabled both lawyers and judges: they were blessing a program that had become unrecognizable as consistent with constitutional protection of privacy – anyone who read Edward Snowden's documents soon knew that, and the legal world should have known it sooner.
  • (8) video-telephony for the inter-personal communication of hearing impaired people).
  • (9) Tang said that the concern was whether a price war might ensue that will impact the profitability of the "triple-play" market – customers who take a mix of products such as TV, broadband and telephony from one provider.
  • (10) If they do, we are in for a dramatic erosion of constitutional privacy protections in the coming years – all thanks to the same kind of old-school legal approach that allowed National Security Agency lawyers to justify mass telephony meta-data surveillance.
  • (11) As well as attracting new users, Sky has been trying to persuade its existing customers to expand the number of its products they take to include home telephony and broadband.
  • (12) We have already seen how technical legalism allowed well-intentioned NSA lawyers and conscientious judges of the Foreign Intelligence Surveillance Court to approve pervasive telephony surveillance because it involved "metadata".
  • (13) BT's move to challenge Sky on live football comes several years after the satellite broadcaster began moving into the telecoms giant's own core businesses of telephony and broadband.
  • (14) As people increasingly use services like Skype and other internet telephony services, Twitter and Facebook to communicate, advocates fear the bill is a land grab that would give US authorities unprecedented access to private information while removing a citizen's legal protection.
  • (15) Mulcaire also pleaded guilty to a further five counts of unlawful interception of communications under the Regulation of Investigatory Powers Act (Ripa) 2000, a more recent law brought in to recognise technological advances in telephony and the internet.
  • (16) "Email and mobile telephony have transformed the tenor of our lives … But we still only vote for the government once every four years or so," noted Bazalgette sadly.
  • (17) But Apple's products not only came to dominate their rivals, they redefined large areas of three entire industries: music, mobile telephony and personal computing.
  • (18) Some 2.3m customers now take a "triple play" package of TV, broadband and telephony.
  • (19) Thus, plaintiffs have a substantial likelihood of showing that their privacy interests outweigh the government’s interest in collecting and analysing bulk telephony metadata and therefore the NSA’s bulk collection program is indeed an unreasonable search under the fourth amendment.
  • (20) It would be in my view a net positive if the telephony metadata aspect” were repealed, Medine said, but “215 is broader.

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