SDH/SONET

SDH (Synchronous Digital Hierarchy) and SONET (Synchronous Optical NETwork) are standards (European and U.S., respectively) for using optical media as the physical transport for high speed long haul networks. They support data rates from 51.84 Mbps to 13.22 Gbps, with 155 Mbps (STM-1 or OC-3) and 622 Mbps (STM-4 or OC-12) the most common rates. Bi-directional ring topology provides redundancy in case a link fails.

Quality of Service (QoS) capabilities and aggregation of various rates make it the preferred choice for metropolitan access.

RAD's R-STM-1 add-drop multiplexer (ADM) enables expansion of the Local Loop up to 100 km (62 miles), creating a transmission layer fully compatible with regional and national SDH networks.
RAD's DXC-STM-1 features grooming and 1/0 cross connect in addition to ADM capabilities.
RAD's Optimux line of optical multiplexers provides cost-effective SDH extension.

Converters & Repeaters

Product	Description
AMC-101	Universal Modular Media Converter/Repeater
LRS-101	Broadband Rack
RIC-155	Fast Ethernet over STM-1/OC-3 NTU
RIC-E1, RIC-T1	E1 Serial Interface or T1 Serial Interface Converter
RIC-E3/ETH, RIC-T3/ETH	10/100BaseT to E3/T3 Interface Converter

Cross Connects

Product	Description
DXC-30E	Enhanced xDSL Multiservice Access Node
DXC-8R, DXC-10A, DXC-30	Digital Cross Connect

Inverse Multiplexers

Product	Description
IMX-4E1, IMX-4T1	8/6 Mbps Inverse Multiplexers

Multiplexers

Product	Description
Megaplex-2100, Megaplex-2104	Multiservice Access Multiplexers
Megaplex-2200	Modular Integrated Access Multiplexers
Optimux-108, Optimux-106	E1/T1 and Ethernet Optical Multiplexers
Optimux-34	E3 Optical Line Multiplexer

GET CATALOG