This equipment is a breakthrough of traditional SDH transmission concept and incorporates advanced transmission and access technologies to form an organic combination of transmission and access, which is this integral transmission/access platform that we provide to users. For traditional E1/E3 circuit service, this equipment can flexibly configure circuit up and down, easily provide circuits and seamlessly connect with other access equipment of our subsidiary with integral monitoring and alarm. Users don't have to worry about interconnection of access with transmission. The monitoring software can manage all equipment and external alarm device such as alarm box can be used in a unified manner. For data service, especially broadband service, this equipment is designed with its access unit as one of its portions. 10/100Base-T Ethernet service access unit can offer broadband data access directly on SDH using POS protocol.

Model AN-MSPP multi-service optic SDH access platform----MSDH (Multi-Serviceover SDH) is a new generation SDH access equipment that can support two grades (STM-1 and STM-4) of optic interfaces at the same time and these interfaces can be upgraded to

STM-16 in the future. The platform can be configured as synchronization regenerator (REG), terminal multiplexing (TM) equipment, add/drop multiplexing equipment or digital cross connection (DXC) equipment and is suitable for various network configurations such as chain network, ring network and mesh network. Service modes E1, E3 and Ethernet, DS3, V35 are supported. Generally, the platform is configured as STM-4 system. If user so requires, it can also be configured as STM-4 system. To suit large capacity, system can be upgraded to STM-16.Available interface types are: E1, E3, STM-1 electrical interfaces; STM-1, STM-4, STM-16 optic interfaces; Ethernet data communication interface etc.

• Multi-interface Supported
• Standard SDH optical interface: STM-1, STM-4 |
• Standard PDH electrical interface: E1, E3, T3
• Data interface: 10/100BaseT auto-sensed Ethernet
• Multi Network Topology Supported
• Chain, ring, star and mesh networks 
• Branching and crossing, including joined and intersected rings

Capacity
AN-MSPP: 12 optical directions (STM-1 or STM-4) and up to maximum 252×E1 channels and one 10/100Base-T Ethernet ports + N x V.35 ports, E3/T3

Operating Features
Integrated services processing ability, supporting both circuit switched and packet switched services, data transmission efficiency increased by statistical multiplexing

Multi-level Protection
The system provides either multiplex section protection or trail protection, without single point of failure. Three protection levels of service are provided, namely, protected service, non-protected service (uninterrupted when performing protection) and additional service (interrupted when performing protection)

Cross Connection
Tributary to tributary, line to tributary, and line-to-line cross connections provided
Unidirectional, bi-directional transmission and broadcast supported

Maintenance and Upgrade
Hot plug, easy maintenance and online upgrade