Overview of Grandstream DP722
The Grandstream DP722 is a DECT cordless HD handset that brings mobility to VoIP users across offices, warehouses, retail stores and homes. Supported by the DP755, DP752 and DP750 base stations, it handles up to 20 lines and 20 SIP accounts with the DP755 and offers up to 350 meters of outdoor range and 50 meters indoors. Features include a 1.8-inch color display, HD audio on handset, speakerphone and headset jack, a configurable push-to-talk button, 3-way conferencing and one-touch door opening with Grandstream GDS door systems. With 20 hours of talk time, it is an affordable mid-range option for teams in warehouses, clinics, hotels and villas.
Technical Specifications – Grandstream DP722
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 350 meters (with DP755 and DP752) 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 | 23 keys including 2 soft keys, 5 navigation/menu keys, 4 dedicated function keys for SEND, POWER/END, SPEAKERPHONE, MUTE |
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| Peripherals | 3-color MWI LED; 3.5mm headset jack; removable belt clip; Micro-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, call park, call pickup, 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 | Up to 20 lines and 20 SIP accounts when paired with DP755 DECT Base Station, or up to 10 lines and 10 SIP accounts when paired with DP752 or DP750 DECT Base Stations |
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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 |
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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; Micro-USB connection |
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| Battery | Rechargeable 800mAh Ni-MH Low Self-Discharge (LSD) AAA batteries (250 hours of standby time and 20 hours of talk time) |
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Physical
| Package Content | Handset unit, universal power supply, charger cradle, belt clip, 2 batteries, Quick Start Guide |
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| Dimensions (H x W x D) | Handset: 158 x 50 x 28.1mm with buckle; Charger cradle: 81.15 x 75.89 x 36.36mm |
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| Weight | Handset: 110g; Charger cradle: 44g; Universal power supply: 50g; Package: 328g |
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| Operating Temperature | Operation: -10º to 50ºC (14 to 122ºF); 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.