Description
QT1M Device Quad T1 Mapper TXC-04251 DATA SHEET .
The Quad T1 Mapper device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications.
Features
* Add/drop four 1.544 Mbit/s signals from an STS-1, an STS-3/AU-3, or an STM-1 VC-4
* Independent add and drop bus timing modes
* Selectable AMI or B8ZS positive/negative rail or NRZ T1 interface. Performance counter provided for coding violations
* Digital desynchron
Applications
* Four T1 1.544 Mbit/s signals are mapped to and from asynchronous 1.5 Virtual Tributaries (VT1.5s) or Tributary Unit-11s (TU-11s). The QT1M interfaces to a multiple-segment, byte-parallel SONET/SDH-formatted bus at the 19.44 Mbit/s byte rate for STS-3/STM-1 operation or at the 6.48 Mbit/s byte rate
