General
Range outdoors	300 m
Indoor range	50 m
Battery capacity	1500 mAh
Battery type	Lithium-ions
Talk time	12 Hours
Standby time	100 Hours
Display size	2,4 "
Display resolution	240x320
Audio quality	HD-Audio
Audio technology	Full-Duplex
SIP accounts	5
Simultaneous calls	5
Charging connector	Micro-USB
Charger	5V/1A
Compatibility	Grandstream UCM series, GXP series, SIP-based systems
Accessories	DECT base station DP750
DECT standard

The Grandstream DP730 is a DECT IP telephone for professional VoIP communication. It serves as a handset in a DECT system and enables mobile telephony over IP-based networks. The device is designed for use in small and medium-sized enterprises where mobile, reliable, and high-quality communication is required. It connects via DECT technology to a base station and uses SIP protocols for voice transmission over IP networks.

Applications
The DP730 is suitable for various work environments, including retail, logistics, and office applications, where employees are frequently on the move. The high range allows for flexible use in larger spaces or outdoors. Compatibility with SIP-based systems also makes it suitable for companies with existing IP telephone systems.

Functions and Features in Detail
The device features a 2.4-inch colour LCD display with a resolution of 240x320 pixels, clearly displaying caller information, menu options, and status indicators. Operation is via an intuitive interface, accessible even for users with limited technical knowledge. An integrated HD audio system ensures crystal-clear voice transmission. The full-duplex audio technology enables simultaneous speaking and listening, even in hands-free mode, without distortion or interruptions. A 3.5 mm headset jack allows connection of an external headset, which is particularly advantageous for long calls or call centre operations. The push-to-talk function supports use in scenarios requiring fast, direct communication.

Technology Explained Simply
The DP730 uses the DECT standard for wireless connection to the base station. This technology provides stable and secure communication with low latency. The range is up to 300 metres outdoors and 50 metres indoors, although another source states a range of up to 400 metres outdoors when using the DP752 base station. The Zero-Config technology enables quick and hassle-free setup without manual configuration. The device is charged via a 5V/1A Micro-USB power supply, with the charging port integrated into the device itself. The 1500mAh lithium-ion battery provides up to 12 hours of talk time and up to 100 hours of standby time.

Compatibility and Accessories
The DP730 is compatible with the Grandstream UCM series and the GXP series, as well as other SIP-based systems. It is supported by the base stations DP750 and DP752. The DP750 base station is available as suitable accessory. The handset supports up to 5 SIP accounts and enables up to 5 simultaneous calls. The maximum number of handsets per base station is five, enabling cost-efficient use in small teams.

Installation and Mounting
Installation is performed via Zero-Config technology, which enables automatic configuration of the device. The base station must be set up on the network, after which the handset automatically connects to the base. No manual entry of IP addresses or SIP parameters is required. The connection is made via the DECT protocol, with the base station acting as a gateway between the IP network and the handset.

Operational Advantages
The DP730 offers high mobility through DECT connectivity and long battery life. HD audio quality and full-duplex technology ensure clear, distortion-free communication. The intuitive interface and colour display simplify usage. Compatibility with various SIP systems increases flexibility when integrating into existing infrastructures. The ability to operate up to five handsets on a single base station makes the solution particularly economical for small teams.