Optical Network Design and Implementation

N - O

narrowband.

Services requiring up to 1.5-Mbps transport capacity.

NE (network element).

Any device that is part of a SONET transmission path and serves one or more of the section, line, and path-terminating functions.

NZDSF (nonzero dispersion-shifted fiber).

This type of fiber was designed to introduce a small amount of dispersion without the zero-point crossing being in the WDM passband. With this type of fiber, you can eliminate, or at least greatly reduce, the degradation due to four-wave mixing, a distortion mechanism that requires the spectral components to be phase-matched along the fiber.

OAM&P (operations, administration, management, and provisioning).

Provides the applications, facilities, and personnel required to manage a network. ...