64 E1s and Gigabit Ethernet to optical add/drop fiber multiplexer – Ring, Chain, Point-to-Point and Point-to-Dual applications supported

• Compact design with 1U height, and can be installed on standard rack
• Realizes up to 64 E1s and four 1000M Ethernet mixed multiplexing to optical fiber

Optical interface

• Dual optical interfaces, SFP optical module (LC interface), Hot plugging
• The line bit rate is 1.25Gb/s, transmission distance is optional (depend on the SFP optical module)
• SFP MSA(INF-8074i), ITU-T G.695, FC-PI V2.0 standards compliable
• Supports 1+1 optical protection and Automatic Protect Switch (APS) with the recovering time less than 50ms
• Provides optical loopback function, a great convenience for trouble shooting
• Supports ALS function
• Supports Remote Power down Detect (RPD) function, which can be used to distinguish the failures of remote power down or fiber broken

E1 interface

• Provides 64 E1 interfaces, compliant to G.703, and balanced/unbalanced selectable
• Jitter tolerance, jitter transfer characteristic and jitter generation fully comply with ITU-T G.823 and G.742 recommendations
• Local/remote loop-back function supported
• Supports device loop and E1 line loop controlled by the local side, which is convenient for E1 line testing
• Supports embedded E1 BERT function

Ethernet interface

• One optical Gigabit Ethernet interface and three electrical Gigabit Ethernet interfaces compliant with IEEE802.3 serial standard
• The electrical gigabit Ethernet interfaces adopt RJ45 connector, support auto-negotiation, which can work in 1000M full-duplex, 100M full/half-duplex, 10M full/half-duplex mode
• The optical gigabit Ethernet interface adopts 1000M SFP module, which can work in 1000M full-duplex mode;
• Proprietary technique (patent pending) adopted to prevent Ethernet frames from looping back in case of unexpected optical loopback
• Supports unicast, multicast and broadcast frame
• Supports flow control and broadcast storm filtering control
• 4K MAC address table
• Supports MAC address dynamic learning function
• Supports port rate control function
• Supports port-based VLAN and IEEE 802.1Q tag-based VLAN
• Supports QinQ（Double Tag VLAN）
• Supports port trunking/aggregating function

Network management interface

• Supports CLI based on RS232 (CONSOLE) management interface
• Supports CLI based on Ethernet (EMU) management interface (TELNET)
• Supports Simple Network Management Protocol (SNMP, V1 and V2C)
• Implements the device alarm and status monitor, port loop configuration, etc.
• Supports one RS232 user channel in point-to-point mode
• Perfect alarm indication and performance statistic
• Support Redundancy Power Supply Protection, Power Module Hot-swappable, the power consumption less than 12W