VoIP Phone PH531N
Features:
- Support Online Update Firmware
- Support Point-to-Point Operation Mode
- Support Gatekeeper Operation Mode (for H.323v4 protocol)
- Support Server Operation Mode (for SIP protocol)
- Last Number Redial
- Mute
- Date/TimeDisplay
- Pin Code for better Security
- 5 Speed Dialing
- Phone Book Directory
- Caller ID
- Call Waiting
- Call Hold
- Call Transfer
- Speaker and Handset Volume Control
- On-Hook Dial
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