
g.165

pratidhvani radd karane vaalon key liye g.165 ack itu-t maanak haye. iska upayog mukhya roop seey telephony mein kiya jaataa haye. pratidhvani telephone lines parr taba hoe sakati haye jaba upayogkarta kii aavaaj aage kii line seey unhein vaapas pratibimbit hoti haye. yeh upayogkarta key liye vichalit karane vaalaa hoe sakata haye aur baatchit koo bhee samajh seey baahar curr sakata haye. pratidhvani detta sancharan mein bhee hastakshep curr sakata haye. maanak koo 1993 mein upayog key liye jaari kiya gayaa thaa, ise g.168 dwara pratisthaapit kiya gayaa thaa.

