Overview of Grandstream DP725
The Grandstream DP725 is a DECT cordless HD handset designed to keep staff connected anywhere in a business, warehouse, retail store or home. Supported by the DP750, DP752 and DP755 base stations, it reaches up to 400 meters outdoors with the DP755 and 50 meters indoors, and up to 10 DP725 handsets can pair with each DP755. A 1500mAh Li-ion battery delivers 50 hours of talk time and 500 hours of standby, while fast charging gives 4 hours of talk from a 10-minute charge. It adds a dedicated push-to-talk button, HD audio, a 3.5mm headset jack, USB-C charging and GDS door control, ideal for warehouses, hotels, campuses and retail floors.
Technical Specifications – Grandstream DP725
Air Interface
| Telephony Standard | DECT |
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| Frequency Bands | 1880–1900 MHz (Europe), 1920–1930 MHz (US), 1910–1920 MHz (Brazil), 1786–1792 MHz (Korea), 1893–1906 MHz (Japan), 1880–1895 MHz (Taiwan) |
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| Number of Channels | 10 (Europe), 5 (US, Brazil or Japan), 3 (Korea), 8 (Taiwan) |
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| Outdoor Range | Up to 400 meters (DP752/DP755) or up to 300 meters (DP750) |
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| Indoor Range | Up to 50 meters |
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Hardware
| Display | 1.8 inch (128x160) color TFT LCD |
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| Keys | 27 keys including 2 soft keys, 5 navigation/menu keys, 5 dedicated function keys for SPEAKERPHONE, MUTE, SEND, POWER/END, 3 side keys including 2 volume (up and down) and 1 Push-to-Talk key |
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| Peripherals | 3-color MWI LED; 3.5mm headset jack; removable belt clip; Type C USB port for alternative charging and non-battery operation |
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| Protocol/Standards | Hearing Aid Compatibility (HAC) compliant |
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Audio & Telephony
| Voice Codecs | G.722 codec for HD audio and G.726 codec for narrow band audio (G.711μ/a-law, G.723.1, G.729A/B, iLBC and OPUS are supported via companion DECT base station), AEC, AGC, Ambient noise reduction on handset mic, advanced noise suppression for incoming audio |
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| Telephony Features | Hold, transfer, forward, 3-way conference, push-to-talk, intercom, downloadable phonebook, call waiting, call log, auto answer, click-to-dial, flexible dial plan |
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| HD Audio | Yes, both on Handset and Speakerphone |
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| Multi-line Access | Each handset may access up to twenty (20) lines |
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| SIP Accounts | Each handset may access up to 20 SIP accounts |
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Security & Management
| Security | DECT authentication & encryption |
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| Multi-language | English, Czech, German, Spanish, French, Hebrew, Italian, Dutch, Polish, Portuguese, Russian, Turkish, Arabic, Chinese Simple, Chinese Tradition, Japanese, Korean, Slovakian, Serbian, Greek, Swedish |
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| Upgrade/Provisioning | Software Upgrade Over-The-Air (SUOTA), handset provisioning Over-The-Air |
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| Device Management | Yes, GDMS |
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Power
| Power Supply | Universal Power Supply Input AC 100-240V 50/60Hz; Output 5VDC 1A; USB-C Connector |
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| Battery | Rechargeable 1500mAh Li-ion battery (500 hours of standby time and 50 hours of talk time) |
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Physical
| Package Content | Handset unit, universal power supply, charger cradle, belt clip, 1 battery, Quick Start Guide |
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| Dimensions (H x W x D) | Handset: 135 x 49 x 15.5mm; Charger cradle: 85 x 85 x 25mm |
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| Weight | Handset: 107g; Charger cradle: 61g; Universal power supply: 55g; Package: 364g |
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| Operating Temperature | Operation: -10º to 45ºC (14 to 113ºF); Charging: 0 to 45ºC (32 to 113ºF) |
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| Storage & Humidity | Storage: -20º to 60ºC (-4 to 140ºF); Humidity: 10% to 90% non-condensing |
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| Compliance | FCC, CE, RCM, IC |
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Source: Grandstream official website and datasheet. Specifications are subject to change by the manufacturer.