RTN 620 Overview As TDM/Hybrid integrated radio equipment, the RTN 620 supports the aggregation, crossconnection, and grooming of TDM and Ethernet services, as well as the transmission of native E1 and Ethernet services. It also supports AM to ensure the quality of high-priority services without compromising the capacity of Ethernet services, optimizing the network performance and improving spectrum utilization. In addition, the RTN 620 can interconnect with other optical transmission equipment through high-rate optical ports. Product Features High Bandwidth and Efficiency Provides 7 MHz to 56 MHz channel bandwidth at air interfaces and supports modulation modes ranging from QPSK to 256QAM. Supports flexible bandwidth configurations (2xE1 to 75xE1) at air interfaces for TDM services. Supports flexible throughout configurations (10 Mbit/s to 400 Mbit/s) for native Ethernet services. AM When the radio link quality over the air interface is good (for example. and EVPLAN. and IDU service interface units. Robust Protection Capabilities Supports 1+1 power supply. Decreases the number of DDF subracks. When the radio link quality over the air interface is bad (for example. EPLAN.3ah. Supports 1+1 backup of the cross-connect units and clock units. the RTN 620 uses a higher-order modulation mode to achieve broad bandwidth transmission. supports N+1 protection. CoS. ensuring the transmission quality for VIPs. EVPL. the RTN 620 adaptively downshifts the modulation mode to improve the anti-interference capability of the radio link. such as EPL. Supports Ethernet OAM based on IEEE 802. and queue scheduling policies such as SP+WRR. supports sub-network connection protection (SNCP) protection . PDH/SDH ring).1p. deleting. traffic classification based on VLAN ID. Supports the adding. Supports full cross-connections in all directions. In TDM mode. IEEE 802.1ag or IEEE 802. Supports fast service provisioning and adjustment. and requires no external ADM equipment. curtailing the CAPEX. Powerful Ethernet Service-Processing Capability Supports EoPDH. Supports eight-class QoS (including CAR. Efficient utilization of spectrum resources decreases the OPEX effectively. Supports 1+1 protection. or DSCP. Supports flexible network topologies (for example. when the weather is good). In TDM mode. Supports a variety of Ethernet services. and switching of VLAN/QinQ tags. Built-in MADM (Multi-ADM) Supports multiple RF directions by using one piece of equipment for achieving networking radio. when it is foggy or raining heavily). and Shaping). external cables. This technology minimizes interference to neighboring systems and the residual error rate. on a desktop. . under the same channel conditions. that is. Easy to Maintain Provides a built-in test system for conducting pseudo-random binary sequence (PRBS) error test at PDH ports. Supports Hybrid-TDM ring radio networks. End-to-end service configuration and management are provided by using an NMS that manages both radio transmission equipment and optical transmission equipment. supports SNCP for E1 services. and between optical transmission links and wireless links.between optical transmission links. Combination of Optical Fibers with Microwave Transmission The RTN 620 can be configured as microwave transmission equipment or optical transmission equipment. Supports linear MSP for optical transmission links and STM-l links. The RTN 620 can be installed in a cabinet. Easy to Install The RTN 620 features compact design and light weight. Hybrid ring. can be installed in any standard telecom cabinet. Supports both SNCP and 1+1 protection. In TDM mode. and supports ERPS protection. or a hybrid of both. The RTN 620. the transmission capacity is doubled. for data services. such as microwave transmit power and RSSI. or on a wall. between wireless links. 300 mm deep. ATPC The automatic transmit power control (ATPC) technology enables the RTN equipment to automatically adjust the output power of the transmitter within the ATPC control range in accordance with the received signal level (RSL). Supports the monitoring of important radio transmission performance specifications. Supports two-fiber bidirectional MSP between STM-4 optical transmission links. The RTN 620 can share a cabinet with wireless base station equipment. XPIC When both the cross-polarization interference cancellation (XPIC) function and the co-channel dual-polarization (CCDP) function are used. Uses simple network management protocol (SNMP) to query alarms and performance events.Uses the NMS to load software programs and data remotely. Uses the Web LCT to manage RTN 600 NEs in the same network in a centralized manner. Abundant Network Management Methods Uses the iManager U2000 Web LCT to manage an RTN 600 NE locally. Uses the iManager U2000/T2000 to manage RTN 600 NEs and Huawei optical transmission equipment in a centralized manner. .