The DP730 is a DECT cordless IP phone that allows users to mobilize their VoIP network throughout any business, warehouse, retail store, and residential environment. It is supported by Grandstream’s DP750 and DP752 DECT VoIP base stations and delivers a combination of mobility and top-notch telephony performance. Up to five DP730 handsets are supported on each base station while each DP730 supports a range of up to 400 meters outdoors (with DP752) and 50 meters indoors with 40 hours of talk time and 500hour standby time. It touts a suite of robust telephony features including support for up to 10 SIP accounts per handset, full HD audio, 2.4-inch color display, a 3.5mm headset jack, push-to-talk, a speakerphone and more. When paired with Grandstream’s DECT Base Stations, the DP730 is a high-end handset that offers a powerful cordless DECT solution for any business or residential user.

Power
Power & Green Energy Efficiency	Universal Power Supply Input AC 100-240V 50/60Hz; Output 5VDC 1A; Micro-USB connection; Rechargeable 1500mAh Li-ion battery (500 hours of standby time and 40 hours of talk time)
Security features
Encryption	DECT authentication & encryption
HARDWARE FEATURES
Standards and Protocols	Hearing Aid Compatibility (HAC) compliant
VOICE
HD Voice	Yes, both on Handset and Speakerphone
SPECIFICATIONS
air interface	Telephony standards: DECT 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) Number of Channels: 10 (Europe), 5 (US, Brazil or Japan), 3 (Korea), 8 (Taiwan) Outdoor Range: up to 400 meters (DP752) or up to 300 meters (DP750) Indoor Range: up to 50 meters
Telephony Features	Hold, transfer, forward, 3-way conference, push-to-talk, intercom, call park, call pickup, downloadable phonebook, call waiting, call log, auto answer, click-to-dial, flexible dial plan
Voice Codecs and Capabilities	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
ENVIRONMENT
Operating Temperature	Operation: -10º to 50ºC (14 to 122ºF); Charging: 0 to 45ºC (32 to 113ºF) Storage: -20º to 60ºC (-4 to 140ºF)
Operating Humidity	10% to 90% Non-condensing
FEATURES
Multi-line Access	Each handset may access up to ten (10) lines
SOFTWARE
Multi-language	English, Czech, German, Spanish, French, Hebrew, Italian, Dutch, Polish, Portuguese, Russian, Swedish, Turkish, Arabic, Chinese Simple, Chinese Tradition, Japanese, Korean, Slovakian, Serbian
Upgrade/Provisioning	Software Upgrade Over-The-Air (SUOTA), handset provisioning Over-The-Air
MISCELLANEOUS
Features	2.4 inch (240x320) color TFT LCD 27 keys including 3 soft keys, 5 navigation/ menu keys, 4 dedicated function keys for SPEAKERPHONE, MUTE, SEND, POWER/END, 3 side leys including 2 volume (up and down) and 1 Push-to-Talk key, 3-color MWI LED 3.5mm headset jack Proximity and accelerometer sensors Backlit keypad Removable belt clip Micro-USB port for alternative charging and non-battery operation Vibration Ring Mode