Description
The Quad E1 Mapper device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications.
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 E.
TXC-04252_Transwitch.pdf
