Gigabit Ethernet over STM-1/OC-3 NTU

• Single STM-1/OC-3 optical port
• Single optical 1000BaseLx/Sx or electrical 1000BaseT port
• Supports channelized OC-3 circuits
  
• Transparent delivery of user traffic using VLAN tagging and stacking
• Four levels of QoS according to VLAN priority field (802.1p)
• Secure Telnet and web applications, SNMPv3 and RADIUS
• SDH loopback detection
• Bi-directional fault propagation

• Fast and easy deployment of Gigabit Ethernet services over STM-1/OC-3c lines
• Enables service differentiation and QoS per application
• Minimizes service disruption and reduces operating costs using sophisticated diagnostic tools
• Small footprint

The RIC-155GE is a network termination unit (NTU) providing simple, efficient and cost-effective bridging of Gigabit Ethernet (GbE) traffic over STM-1/OC-3c lines. It offers a migration path by connecting future-ready IP devices with 1 Gigabit uplinks into the existing SDH/SONET network at STM-1/OC-3c access rates.

Typical applications include IP DSLAM backhaul, inter-POP connectivity or high bandwidth private line services. Using VLAN tagging and stacking, Ethernet traffic can be delivered transparently, keeping user VLAN (CE-VLAN ID) settings intact.

Ethernet QoS

The RIC-155GE Gigabit Ethernet over STM-1/OC-3 NTU maps Ethernet frames into four fixed priority egress queues on the network port based on VLAN priority tagging (802.1p). This enables prioritizing and differentiation between various user applications.

SNMP Management

The RIC-155GE features flexible management capabilities, including local management via an ASCII terminal (RS-232). In addition, remote management can be performed either inband or out-of-band, using the network or user ports, while maintaining separation between management and user traffic via the use of VLANs. Advanced FCAPS (Fault, Configuration, Accounting, Performance, Security) and diagnostic tools are provided by RADview-EMS, RAD’s carrier-class element management system, via a Web browser.

The RIC-155GE also supports a variety of configuration access channels, including Telnet, SNMP, Web server, and TFTP. Incorporated security features include SNMPv3 and RADIUS.

The devices collect statistics at the Ethernet physical layer and the STM-1/OC-3c interface frame counters.

Interfaces and physical

RIC-155GE is equipped with either a 1000BaseSX/LX optical LC connector or a 1000BaseTX electrical Ethernet interface. The optical STM-1/OC-3c network interface includes single mode and multimode options.

The RIC-155GE is a 1U-high, half 19-inch wide box with a rack-mount option. An NEBS level 3 compliant, 1U-high, 19-inch wide box, with AC or DC power supply redundancy, is also available.