Large capacity access ability: provide with maximum 420 channels of service ports;

High safety and reliability: double power supply redundancy, multi-master control work, each service plate is independent each other, malfunction no affects each other;

Multiple protection mode: can be accessed fiber or E1 link upgoing, double optical fiber protection, 1 optic&1electricity protection, double E1 protection, multi-channel E1 protection are optional;

Extendible design: modular structure, possess 14 pieces of service slots, can be mix-inserted all kinds of interfaces and functional modules, possess better extendibility, can achieve smooth expansion;

Flexible configuration of service: adopt slot design, each slot doesn’t limit any service board cards, optional optical transmission plate, crossing & connecting plate, multi-service interface plate, voice interface plate, etc.

Abundant service interface: optional service module, such as FXO/FXS, 2/4W E&M, asynchronous/ synchronous RS232, asynchronous/synchronous RS422, RS485, 10BASE-T, V.21/V.22, V.24, V.34, switching value, CAN bus, magneto telephone, hotline, V.35, G.703 codirectional 64K, ADS-B radar, VHF, synchronous radar data, meteorological self-view data, switching data meteorological radar data, ILS data, etc.

NMS: can monitor the configuration information of the whole network equipment, optical fiber orE1 link state, user interface state, log enquiry, etc.

Service port monitoring: Real-time monitoring service port work state, such asFXO/FXS/E&M/RS232/RS422/RS485/V.35, etc. it can set service port alarm condition, automatically output alarm information after triggering.

Support time slot cross connecting function.

Support telephone online testing function, can test line quality of PCM equipment to telephone.

Support inband management, achieve remote control and system management.

Support high impedance recording telephone function.