TXC04222 28-Channel Dual Bus High Density Mapper

TXC04222 28-Channel Dual Bus High Density Mapper

The TEMx28 device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications. Up to 28 E1, DS1, or VT/TU payloads are mapped to and from VT1.5/TU-11s and VT2/TU-12s carried in an STM-1 VC-4 or STS-3 format. The device interfaces to a multiple-se.

Features

• Add/drop up to 28 E1, DS1, or VT/TU payloads from two add and two drop STM-1/VC4, STS-3 buses
• Add bus and drop bus timing modes
• Cross mapping applications (DS1 mapped to/from VT2/TU-12s)
• Selectable HDB3/B8ZS/AMI positive/negative rail, NRZ, or VT/TU interfaces per channel
• H4 multiframe option in place of Telecom Bus V1 pulse
• Digital desynchronizer
• Drop buses are monitored for parity, loss of clock, and upstream AIS
• Performance counters for pointer movements, BIP-2 errors, REI and coding violations
• Single-bit or three-bit RDI operation per channel
• Tandem connection capabilit.