Grandstream Networks DP725 IP phone Grey 20 lines TFT

Certification: FCC, CE, RCM, IC | Voice codecs: G.729A | Package weight: 364 g | AC adapter included: Yes | Storage temperature (T-T): -20 - 60 °C | Bluetooth: No | Firmware upgradeable: Yes | Battery technology: Lithium-Ion (Li-Ion) | Voice codecs: G.711u | Storage relative humidity (H-H): 10 - 90% | Voice codecs: AGC | Wi-Fi: No | Ethernet LAN: No | Operating relative humidity (H-H): 10 - 90% | AC adapter input voltage: 100 - 240 V | Display diagonal: 4.57 cm (1.8") | Headphone outputs: 1 | Speakerphone: Yes | Front camera: No | Display resolution: 128 x 160 pixels | Answering machine: Yes | Product type: IP Phone | Maximum indoor range: 50 m | Battery capacity: 1500 mAh | Voice codecs: G.726 | Touchscreen: No | Handset weight: 107 g | Quick start guide: Yes | Input current: 5 A | Handset dimensions (WxDxH): 135 x 49 x 15.5 mm | Display: TFT | Input frequency: 50/60 Hz | Automatic gain control: Yes | Voice codecs: iLBC | Battery recharge time: 50 h | Voice codecs: G.722 | Warnings: Store away from water and moisture. | Operating temperature (T-T): -10 - 45 °C | Call hold: Yes | Maximum outdoor range: 400 m | Power over Ethernet (PoE): No | Voice codecs: AEC | Hearing aid compatibility: Yes | Charger: Yes | Noise reduction: Yes | Voice codecs: G.729B | Voice codecs: OPUS | Product colour: Grey | Call waiting: Yes | Warnings: Follow instructions for correct installation and use. | Warnings: Do not open the appliance, risk of electric shock. | Number of handles included: 1 pc(s) | Conference call: Yes | Handset type: Wireless handset | Call transfer: Yes | Lines quantity: 20 lines | Phonebook sharing: Yes | Message-waiting indicator (MWI): Yes | Call park: Yes | Call pick up: Yes | Call forwarding: Yes