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Compact Gigabit Ethernet Aggregator, GE - STM1 Fiber Optic Convergence Aggregator

CCOM Technology Co., Ltd.

Compact Gigabit Ethernet Aggregator, GE - STM1 Fiber Optic Convergence Aggregator

Place of Origin : China

Model Number : CT002

MOQ : 1 pcs

Packaging Details : Standard

Delivery Time : within 3~7 days

Supply Ability : Samples available

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CT002 is a Gigabit Ethernet Aggregator with inverse multiplexing and VLAN TAG function; it provides three gigabit Ethernet interfaces (2 electrical and 1 optical Ethernet interfaces) compliant with IEEE 802.3 series standard and 2 STM-1 interfaces. It can separate the Ethernet data from GE port (the carried VLAN Tag correspond to different VCG channels), encapsulate them into EoPDH signal, and then into SDH signal; in the opposite direction, it can de-map the Ethernet data from E1 signal, then from SDH signal, aggregate them into GE port. Thus, it can achieve the efficient transmission of Ethernet data over SDH network.
CT002 is designed as a modular system, with one 16VCG Ethernet aggregation unit embedded in the mainboard, three 16 VCG Ethernet aggregation units pluggable, and various optional power cards to meet the various application requirements.
CT002 supports 64 VCG channels (each module supports 16 channels) at most, and each VCG channel can be configured to work in single E1 mode or Multi-E1 conversion mode independently, In single E1 conversion mode, each channel bandwidth is one E1; In multi-E1 conversion mode, the maximum bandwidth of each channel is 16 E1, under 1+0 mode (when the two STM-1 interfaces are independent), the 64 VCG share 126 E1.
CT002 can be used in the traffic convergent network, supports point-to-multipoint application; it supports NE management based on simple CLI command via RS232 type; meanwhile, it supports SNMP_V1 and SNMP_V2 protocol, supports network management platform CCView based on C/S architecture, which is easy for device configuration, management and maintenance.
With EoPDH (Ethernet over PDH) technology compliant to ITU-T G.7041, G.7042, G.7043 and G.8040 standards, CT002 can communicate with products from other vendors adopting the same standards.


Compact design with 1U height, 19 inch, 255mm depth, and can be installed on standard rack

Optical interface

  • Two STM-1 optical interfaces; SFP optical module (LC interface); Hot plugging;
  • The line bit rate is 155Mb/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;
  • Provides optical loopback to device side, a great convenience for trouble shooting;
  • Supports Automatic Laser Shutdown(ALS) to protect operators from hurt;
  • Supports Remote Power down Detect (RPD) function;

Ethernet interface

  • One optical Gigabit Ethernet interface and two 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 1.25G SFP module, which can work in 1000M full-duplex mode, transmission distance is optional (depend on the SFP optical module);
  • Proprietary technique (patent pending) adopted to prevent Ethernet frames from looping back in case of unexpected transmission line loopback;
  • Supports unicast, multicast and broadcast frame;
  • Supports flow control and broadcast storm filtering control;
  • 4K MAC address table, with optional 12s / 300s ageing time configurable, the default is 300s;
  • Supports MAC address dynamic learning function;
  • Accepts frames with length between 64 and 1552 bytes (otherwise filtering);
  • Supports port-based VLAN and IEEE802.1Q tag-based VLAN;
  • Provides performance statistic for each Ethernet interface;
  • Supports QinQ(Double Tag VLAN);

Timing mode

  • Tracing from internal timing source, complies with ITU-T G.813 standard;
  • Tracing from STM-1 optical line timing source (T11, T12) ;
  • Timing sources can be switched over according to alarms, SSM values, frequency offset, and the preset priority of the sources, or can be switched over by force directly;

Path Protection

  • Supports 1+1 path protection and 1+0 non-protection mode;
  • Supports 1+1 path protection with the recovering time less than 50ms;
  • Supports automatic protection switch and manually protection switch;

Ethernet encapsulation

  • In single E1 mode, it supports GFP-F encapsulation compatible with ITU-T G.7041 recommendation and HDLC encapsulation compatible with RJ017*, under HDLC encapsulation, it supports framed PCM31/ unframed mode;
  • In Multi-E1 conversion mode, it supports GFP-F encapsulation;

Communication with remote equipment

  • In single E1 mode, it supports communication with the remote E1 to Ethernet converter and the equipment adopted the same Ethernet encapsulation from other vendor;
  • In Multi-E1 conversion mode, it can communicate with the remote Ethernet to Multi-E1 converter series, Simplified Ethernet to multi-E1 Converter and the equipment adopted the same Ethernet encapsulation from other vendor;

Compliant to ITU-T standards

  • GFP-F encapsulation , compatible with ITU-T G.7041 recommendation;
  • Virtual concatenation (VCAT) and Link Capacity Adjustment Scheme (LCAS) recommendation G.7042;
  • Ethernet to nxE1 mapping recommendation G.7043;
  • Ethernet to single E1 mapping recommendation G.8040;

NE Management

  • Supports Simple Network Management Protocol (SNMP), compatible with V1 and V2C protocol;
  • Supports FTP protocol and firmware download online without disturbance of existing traffic;
  • Supports remote management for remote devices, besides, it can manage the remote media converter with TS1000 protocol via our devices;
  • Monitoring the alarms and status in real-time;

Supports hot-spare power, the power consumption is less than 20W

  • -48V DC single power access;
  • -48V DC double power access;
  • 220V AC single power access;
  • 220V AC double power access;
  • -48V DC+220V AC double power access
*: RJ017 is an Ethernet bridge chip produced by RAD Data Communications, Israel.

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