TXC-04252 Datasheet (Transwitch) - QE1M Device Quad E1 Mapper

TXC-04252, 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

TXC-04252 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