TXC-04252 Overview
The Quad E1 Mapper device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications. Four E1 2.048 Mbit/s signals are mapped to and from asynchronous Tributary Unit-12 (TU-12) or Virtual Tributary 2 (VT2) formats. The QE1M interfaces to a multiple-segment, byte-parallel SDH/SONET-formatted bus at the 19.44 Mbit/s byte rate for STM-1/STS-3 operation or at the...
TXC-04252 Key Features
- Add/drop four 2.048 Mbit/s signals from STM-1/VC-4, STS-3/AU-3 or STS-1 buses
- Independent add and drop bus timing modes
- Selectable HDB3 positive/negative rail or NRZ E1 interface. Performance counter provided for coding violations
- Digital desynchronizer
- Drop buses are monitored for parity, loss of clock, upstream AIS and H4 multiframe errors
- Performance counters are provided for TU/VT pointer movements, BIP-2 errors and Far End Block Errors (FEBEs)
- TU/VTs are monitored for Loss Of Pointer, New Data Flags (NDFs), AIS, Remote Defect Indication (RDI), and size errors (S
- V5 Byte Signal Label Mismatch and Unequipped detection
- E1 facility and line loopbacks, generation of BIP-2 and FEBE errors, and send RDI capability
- Intel / Motorola / Multiplexed-patible microprocessor bus interface with interrupt capability
TXC-04252 Applications
- STM-1/STS-3/STS-1 to 2.048 Mbit/s add/drop mux/demux