The PM5337 ADM-622 is a highly integrated solution for compact optical transport systems with 622Mbit/s and 155Mbit/s SONET/SDH network interfaces. The feature rich device integrates a complete SONET/SDH subsystem including VT/TU/STS/AU memory based cross-connect capable of handling multiple network topologies, including 1+1, 1:1, UPSR, and MSPRING. This crossconnect supports MAPSTM automated protection switching, a mechanism that allows standards based protection switching without software intervention.

In addition, the device integrates T1/E1, DS3/E3/EC-1 framers and mappers, as well as 10/100/1000 MACs with GFP/HDLC/LAPS encapsulation and mapping into a Virtual Concatenation (VCAT) subsystem capable of both high-order and low-order virtual concatenation with LCAS. The device supports both line and equipment redundancy. Two SONET/SDH network interfaces with 622M of both low-order and high-order pointer processing per-port are provided for line redundancy, while four 622/2488 Mbit/s ESSI serial backplane interfaces provide equipment redundancy as well client interface scalability. The ADM-622 enables extremely compact and low cost equipment designs with unprecedented flexibility and carrier-class reliability. Target applications for the ADM-622 are single card
compact access MSPPs. The ADM-622 is also well suited for adding multi-service capability into existing larger MSPP platforms by leveraging the ESSI serial backplane interfaces.

Applications
• 1RU/Pizzabox SONET/SDH ADM platforms
• Multi-Service Trib Card on SONET/SDH/P-OTP systems

• Fully integrated solution for OC-3/STM-1 or OC-12/STM-4 Add/Drop or Terminal Multiplexers
• Highly channelized PDH and Ethernet Client transport interfaces enable deployment of converged networking architectures on a single platform
• Integrated dual SONET/SDH interfaces each with 622 Mbit/s high order and low order Tributary Unit Pointer Processing (TUPP)
• Full VT/TU ring closure for line protection
• Parallel Telecombus and Serial 622 Mbit/s or 2.5 Gbit/s ESSI interfaces for client interface scalability and driving backplane interfaces
• Integrated 2.5 Gbit/s STS/AU/VT/TU cross-connect allowing for future system expansion and addition of transport interfaces
• Optimized architecture for single card platforms or cost effective, multiservice card in larger MSPPs via 622 Mbit/s or 2.5 Gbit/s ESSI backplane interface