Voice-frequency signalling equipment for analog lines)

The TSX is a voice frequency signalling equipment for analog lines.
It provides:
- automatic level adaptation
- optimum sound quality without echo
- a signalling adapter

Features:  
- Leased circuit: 2 or 4 wire
- PABX's interfaces: extension, subscriber, 2 or 4 wire + E/M, loop Gen., Ring Gen.
- Application: PABX's interconnection, range extender, long line adapter
- Signalling protocol: CEPT L1 or L2, L0, AC15A, B, C, D -DTMF, R2, COLISEE ...