Nortel Networks 8672ATME Manual de usuario Pagina 35

  • Descarga
  • Añadir a mis manuales
  • Imprimir
  • Pagina
    / 162
  • Tabla de contenidos
  • MARCADORES
  • Valorado. / 5. Basado en revisión del cliente
Vista de pagina 34
Chapter 2 Passport 8672ATME Module terminology 35
Using the Passport 8672ATME Module
SONET terms and acronyms
This section provides a brief listing of common Synchronous Optical Network
(SONET) terms. SONET is a medium for transmitting data that uses fiber optic
cables.
The following terms and acronyms are frequently used with SONET information:
SONET: Synchronous Optical Network. SONET is a family of fiber optic
transmission rates that provides the flexibility to transport many digital
signals with different capacities. This ANSI standard provides for
transmission from OC-1 to OC-48 and greater.
SDH: Synchronous Digital Hierarchy. SDH is a standard technology for
optical fiber-based synchronous data transmission. SDH is the international
equivalent of SONET.
OC-3: Optical Carrier-level 3. OC-3 is an optical fiber transmission system at
155 Mb/s.
OC-3c/STM-1: Optical Carrier-level 3 concatenation. OC-3c/STM-1 is an
optical fiber transmission system that carries STS-3c/STM-1 frame structures
at 155 Mb/s. Concatenation refers to the fact that there is only one logical data
stream (rather than supporting a channelized structure).
OC-12: Optical Carrier-level 12. OC-12 is an optical fiber transmission
system at 622 Mb/s.
OC-12c/STM-4: Optical Carrier-level 12 concatenation. OC-12c/STM-4 is an
optical fiber transmission system that carries STS-12c/STM-4 frame
structures at 622 Mb/s. Concatenation refers to the fact that there is only one
logical data stream (rather than supporting a channelized structure).
Vista de pagina 34
1 2 ... 30 31 32 33 34 35 36 37 38 39 40 ... 161 162

Comentarios a estos manuales

Sin comentarios