• Conforms to the correlative proposal of ITU-T and related SDH technical criteria of the country.
• Full time slot cross connect functions, having powerful, convenient Add and Drop traffic functions and modes.
• Compliant system design: The equipment can configure either TM (Terminal Multiplexer) or ADM (Add Drop Multiplexer) mode flexibly.
• Offers system configuration for either STM-1 or STM-4, with the methods of easy upgrading and reconfiguring networks.
• Provides multi-type tributary interfaces with excellent cost performance.
• Offers perfect network management system; flexible network configuration.
• Realizes a number of traffic protection modes.
• Provides multi-function orderwire telephone system.
• Offers electromagnetic compatibility performances (EMC and EMI) with appropriate measures.
• Well maintained; high-reliable operation.
• Pizza box type appearance.
• 2U-height compact-size designation.
• Provides1008 × 1008 VC12 level, or 48 × 48 VC3 level, or 16 × 16 VC4 level non- blocking cross connection, supporting unidirectional, bi-directional and broadcasting.
• Provides sub-network connection protection and 1+1 multiplex section protection, supporting traffic communication between them.
• Applicable for a number of network configurations : point to point, linear, ring, star, tree, multi-ring, ring crossing, etc
• Provides E12 (2M), 100Base-T2 (2 WAN) and 100Base-T (4 WAN) traffic interfaces.
• Provides three levels of VC4, VC3 and VC12 cross connect for 100Base-T/ 100Base-T2 subboard, supporting both LAPS and GFP EOS encapsulation and LCAS standard.
• Provides virtual concatenation function for 100Base-T/100Base-T2, and the maximum virtual concatenation quantity for VC3 level is 3 and for VC12 is 63.
• Provides four extended slots reserving traffics to be extended.
• Capacity for interfaces : - E12 interface: up to 128 channels - 100Base-T2/100Base-T Ethernet interface: up to 16 channels - STM-4 optical interface: up to 4 channels - STM1 optical/electrical interface: up to 10 channels
• Either way for the use of traffic: independent or protecting each other among optical interfaces.
• Configurations of complicated SNCP network, such as 622M-155M Multi-Ring, 155M-155M Multi-Ring, etc.
• Allows configuring STM-1 system to/from STM-4 system only by replacing interface modules; simply upgrading.
• Provides orderwire interface (2-wire interface), with the functions of group calling and selected calling
• One 64 kbit/s V.11 or V.24 user data interface per optical interface.
• Provides timing synchronous interface : - 2048 kbit/s or 2048 kHz external clock - 2048 kbit/s tributary - STM-1 and STM-4 timing source inputs - 2048 kbit/s or 2048 kHz external timing source output - SSM function
• Provides DCC channel of D1 to D3; Using TCP/IP communication protocol.
• Provides F (10Base-T) and f (RS232) network management interfaces for configuration, alarm, performance, maintenance and security functions of ITU-T definition.
• Provides ports for eight Housekeeping Alarms, four Housekeeping Controls, and a set of Alarm Output interface.
• Provides local/remote firmware download: in-service upgrading is available for easy maintenance.
• Allows upgrading hardware configuration data without replacing equipment.
• Provides the network management for remote connection via serial interface or LAN, which allows monitoring remote NE.
• Supports the following application of fiber transmission : - Super Long-Distance (<80km) - Long-Distance (540km) - Short Distance (<15km)
• Provides fans to disperse heat forcibly, or allows natural heat dispersion without using fans as well; provides the fans controlling temperature and inspecting their own status to guarantee the equipment running stably.
• Flexible structure designing: allows the front access or the rear access by the method of mounting shelves.
• Meet RoHS and lead-free design requirements.
