Grandstream GDP 750 Base

Call waiting: Yes | Voice codecs: G.723.1 | Voice codecs: G.711 | Power over Ethernet (PoE): Yes | Maximum range: 300 m | Voice codecs: AMR | Voice codecs: G.726-32 | Voice codecs: CNG | Voice codecs: PLC | Voice codecs: AJB | Voice codecs: VAD | Firmware upgradeable: Yes | Security algorithms: SSL/TLS | Product colour: Black | Security algorithms: SSH | Dimensions (WxDxH): 130 x 90 x 28.5 mm | Storage temperature (T-T): -20 - 60 °C | Operating relative humidity (H-H): 10 - 90% | Weight: 143 g | Conference call: Yes | Package weight: 360 g | Ethernet LAN (RJ-45) ports: 1 | Operating temperature (T-T): -10 - 50 °C | Security algorithms: 802.1x RADIUS | Quality of Service (QoS) support: Yes | Voice codecs: G.729ab | Call hold: Yes | Voice codecs: G.722 | Ethernet LAN: Yes | Number of handsets supported (max): 5