TXC04222
Description
The TEMx28 device is designed for add/drop multiplexer, terminal multiplexer, and dual and single unidirectional ring applications.
Key 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 Tele 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 capability per ETSI standards
