Concept
Description
DDN
Digital data network (DDN) is a network that uses digital channels to
transmit data signals. It provides permanent and semi-permanent
connections for users. Compared with traditional analog channels, DDN
channels have a higher transmission quality, transmission rate, and
bandwidth use rate. DDN is widely used in financial departments,
governments, and enterprise groups that require high real-time data
switching
DDN node
machine
A DDN network consists of backbone node machines and access node
machines.
A backbone node machine (2M node) implements network service
conversion. It provides interfaces and cross-connections for 2 Mbit/s
(E1) digital channels, multiplexes and cross-connects Nx64 kbit/s
circuit signals, and supports cables reconnection for frame relay
services.
An access node machine accesses various services for DDN. It provides
interfaces for Nx64 kbit/s and 2048 kbit/s digital channels, multiplexes
Nx64 kbit/s (N=1–31) signals, and accesses voice and fax users.
Protocol converter Protocol converter is a device used to convert standard or proprietary
protocol of one device to the protocol suitable for the other device or
tools to achieve the interoperability. In this document, it implements
protocol conversion between V.24/V.35 and E1.
Access Side
Concept
Description
PON
A passive optical network (PON) uses a point-to-multipoint (P2MP)
network architecture. A PON network consists of three parts: optical
line terminal (OLT), optical distribution network (ODN), and optical
network units (ONUs). A PON network uses optical fibers for data
transmission, supports more users with less optical fiber resources, and
provides a higher access rate.
Mainstream PON technologies include broadband passive optical
network (BPON), Ethernet passive optical network (EPON), and gigabit
passive optical network (GPON).
ODN
The ODN is composed of passive optical components, such as optical
fibers and one or more passive optical splitters. The ODN provides
highly reliable optical channels between the OLT and ONUs.
OLT
The OLT is an aggregation device located at the central office (CO),
which terminates PON protocols. OLTs in this document are MA5600T/
MA5603T/MA5608T.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
13 FTTO Configuration (Large-sized Enterprise Access)
Issue 01 (2014-04-30)
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