Tesis previa a la obtención del Título de Ingeniero en Electrónica y ...

FOREWORD
be ITU Telecommunication Slandardixalinn Sector (ITU-T) is a permaneni organ of Ihe Inlemalionai Telecomunication
Union. The ITU-T'is responsible for sludying technícal, operating and larifí queslions and issuíng
ecommendations on ihem wilh a view lo siandardr/ing teleeommunicalions on a worldwide basis.
he V/orld Telecommunícalion Slandardhalíon Conference (WTSC), whieh meéis every fuur years, established ihe topics
ir study by ihe ITU-T Study Groups whích, in their lurn, produce Recommendations on these tupies. .
PU-T Recommendation H.320 was revi.sed by the ITU-T Sludy Group XV (1988-1993) and was approved by Ihe WTSC
ielsinki, March 1-12, 1993).
NOTKK
As a consequence o¡' a rel'orm procesa wilhin ihe Iniernalional Te-lecommunicalion Unión (!TU), Ihe CC1TT
sased to exist as of 28 Fehrtiary 1993. In iis place, the 1TU Telecommunication Siandardizalion Secior (ITU-T) was
reaied as of 1 March 1993. Similarly, in this reform process, ihe CC1K and the 1FRB have heen replaced by the
.adiocommunication Sector.
\r not to delay publícation of ihis Recommendation, no change has heen made in ihe lexl to references conlaining
le acronyms "CCITT, CC1R or 1FRB" or Iheir associated eniíties suuh as Plenary Assembly, Secrelariai, etc. Fuiure
dílions of this Recommendation will uomaín the proper lerrninology re.Iated lo the new 1TU slrunuire.
In thís Recommendalion, ¡he. expres.sion "Adminüslralion" i.s u sed for üo n cusen es s lo indiuaie both a
ílecommunication adminisiraiion and a recognixed operaling agency.
© ITU 1994
Ul righls reserved. No parí of (his publicalion may he reproducid or ulilixed ¡n any ibrm or by any means, elecironíc or
nechanícal, including photocopyíng and microfilm, wllhoul permis.síon in writing from Ihe !TU.