RIC-155L Gigabit Ethernet over STM-1/OC-3 converter
RIC-155L is a convertor that bridges between Gigabit Ethernet networks and
STM-1 / OC-3c networks, providing simple, efficient, and cost-effective Gigabit Ethernet connectivity over
SDH/SONET. The RAD RIC-155L offers a migration path for connecting future-ready IP devices to
existing SDH/SONET networks. The device enables cost-effective deployment of the
SDH/SONET infrastructure for internet
access and LAN connectivity. The RAD RIC-155L supports encapsulation using GFP per
ITU-T G.7041 or ANSI T1-105.02, providing efficient bandwidth utilization. RIC-155L
can be managed for configuration, monitoring and diagnostics.
Typical applications include enabling IP DSLAM, IP Node B and WiMAX BTS backhauling (Figure 1), and connecting
point-to-point Ethernet Private Line over SDH/SONET (Figure 2).
The RAD RIC-155L supports frame size of 6410000 bytes, including VLAN-tagged frames.
RIC-155L operation is based onVC-4/STS-3c.
The unit can be monitored, configured, and tested using the following ports and applications:
Out-of-band via the local Ethernetmanagement port
Inband via the network STM-1 port using a dedicated VLAN
Using a highly scalable, Java-based multiplatform; RADview-EMS carrier class
element management system, for
network configuration, provisioning, monitoring and management.
The Web-based management application provides remote device configuration and maintenance and is embedded into
RIC-155L. This application can be accessed from any standard Web browser and is provided at no extra cost.
DIAGNOSTICS OF THE RAD RIC-155L
Remote (RLB) and local loopbacks (LLB) are used for physical layer troubleshooting.
LOS AND FAULT PROPAGATION
RIC-155L provides user configurable, unidirectional fault propagation. The LAN link is deactivated if one of the following
user-defined alarms is issued:
LOS (Loss of signal)
AIS (Alarm indication signal)
RDI (Remote defect indication).
RIC-155L employs standard GFP encapsulation as per Generic Framing Procedure (ITU-T G.7041/Y.1303).
QUALITY OF SERVICE ON THE RAD RIC-155L QOS
For prioritizing user traffic, RIC-155L features up to four separate queues. The queues handle traffic for different
services based on VLAN priority (802.1p), which enables mapping the 8 priority levels of VLAN to 4 traffic classes.
SDH/SONET TIMING OPTIONS
The user can define the following SDH/SONET clock sources:
Recovered from STM-1/OC-3 interface.
RIC-155L operates with the following devices using standard encapsulation:
RADs RICi-155GE (Central Ethernet gateway)
Third-party devices that employ standard GFP encapsulation.
RIC-155L Product data sheet (pdf)