Concept Description
ONU ONUs are located on the user side, providing various types of ports for
connecting to user terminals. The ONUs communicate with the OLT
through a passive ODN.
Network Side
Concept Description
SDH Synchronous digital hierarchy (SDH) is a transmission scheme that
follows ITU-T G.707, G.708, and G.709. It defines the transmission
features of digital signals such as frame structure, multiplexing mode,
transmission rate level, and interface code. SDH is an important part of
ISDN and B-ISDN. It interleaves the bytes of low-speed signals to
multiplex the signals to high-speed counterparts, and the line coding of
scrambling is used only for signals. SDH is suitable for the fiber
communications system with high speed and a large capacity since it
uses synchronous multiplexing and flexible mapping structure.
NGN/IMS A next generation network (NGN) is a network that uses softswitches
as its core and uses open and standardized architectures to provide
abundant services such as VoIP, video, and data.
The IP multimedia subsystem (IMS) uses SIP signaling as its call control
signaling to provide services such as VoIP, data, and multimedia
services.
NOTE
NGN/IMS in this document refers to softswitches that support H.248 and SIP.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide 13 FTTO Configuration (Large-sized Enterprise Access)
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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