TXC-04251 Datasheet QT1M Device Quad T1 Mapper

Manufacturer: Transwitch

TXC-04251 qt1m device quad t1 mapper by Transwitch - Datasheet Preview

Datasheet Details

Part number	TXC-04251
Manufacturer	Transwitch
File Size	874.02 KB
Description	QT1M Device Quad T1 Mapper
Download	TXC-04251 Download (PDF)

General Description

The Quad T1 Mapper device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring 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 for STS-1 operation.

Overview

QT1M Device Quad T1 Mapper TXC-04251 DATA SHEET.

Key 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 desynchronizer reduces systemic jitter in the presence of multiple pointer movements. A register is also provided to control the internal FIFO leak rate.
Drop buses are monitored for parity, loss of cl.

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