TXC04252 QE1M Device Quad E1 Mapper

TXC04252 QE1M Device Quad E1 Mapper

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 multip.

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-bits)
• V5 .