Zte Unitrans ZXMP M600 Technical Instructions page 18

ZXMP M600 (V1.0) Technical Manual
adopted in it are widely used for commercial purposes, while the user and service
management is flexibly and convenient. The MAN features broadband capacity and
rate, efficient transmission of information and diversified access methods. It obtains the
contents locally, offers user-defined access, provides characteristic services and can
deploy new services quickly. In addition, its capacity can be expanded flexibly and its
upgrade and development can be predicted.
1.1.1.2 Basic Structure
The MAN can either be divided vertically or horizontally:
1. Vertical division
The MAN can be vertically divided into the access layer, convergence layer and
core layer.
The access layer accesses different types of subscribers such as routers and LAN.
The convergence layer converges sporadic access points, implements data
multiplexing, transmitting and switching, and provides traffic control and user
management functions. It includes Multi-Service Transmit Platform (MSTP) and
Metro OADM. The core layer implements high-speed information exchange on
the whole network as well as interconnection between backbone networks. It
generally consists of OADM equipment.
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