- All-digital, uncompressed transmission.
- PCM Pulse Code Modulation.
- Clear voice quality, stable and reliable call.
- Each telephone signal level 3 over-current protection.
- Support Caller ID / fax and provide anti-pole signal.
- Power and fiber optic link LED lights indicate the state of equipment.
- Low power consumption, low heat, stable operation for a long time.
- Supports hot swap.