Grandstream DP720 DECT Cordless Handset

The Grandstream DP720 is an additional cordless handset for Grandstream's DECT platform, intended for staff who need to take calls away from a desk without carrying a mobile. It has no base station of its own — it registers to a DP750, DP752 or DP755 base, which does the SIP work and pushes lines out to every handset paired with it.

Because DECT operates on its own licensed band rather than sharing your Wi-Fi, coverage stays predictable even on busy networks. A single charge gives up to 20 hours of talking and roughly ten days on standby, and the 1.8-inch colour screen, HD speakerphone and 3.5mm headset socket make it practical for everyday use in workshops, stockrooms, care settings and small offices.

Key features

• Pairs with DP750, DP752 and DP755 — up to 20 lines and 20 SIP accounts on a DP755, or 10 lines and 10 accounts on a DP752 or DP750
• Long DECT range — up to 350 metres outdoors with a DP755 or DP752 base, and up to 50 metres indoors
• 20 hours talk time — around 250 hours on standby, so a handset survives a weekend on the cradle
• Full HD audio — G.722 wideband on both the earpiece and the full-duplex speakerphone
• 1.8-inch colour display — 128 x 160 TFT LCD for clear caller ID and menus
• Three-way conferencing — bring a third party into a call from the handset
• DECT authentication and encryption — calls and account credentials are protected over the air
• 3.5mm headset socket — use a wired headset for hands-free work
• Standard telephony features — transfer, forward, call waiting and do not disturb
• Remote provisioning — TR-069, XML config files and GDMS cloud management

Technical specification

Wireless and range

• DECT standard air interface
• European frequency band: 1880–1900 MHz
• Outdoor range: up to 350 metres with DP755 or DP752, up to 300 metres with DP750
• Indoor range: up to 50 metres

Telephony

• Up to 20 lines and 20 SIP accounts with a DP755 base
• Up to 10 lines and 10 SIP accounts with a DP752 or DP750 base
• Codecs on the handset: G.722 (HD) and G.726
• G.711µ/a-law, G.723.1, G.729A/B, iLBC and Opus supported via the companion base station
• Three-way audio conferencing, transfer, forward, call waiting, do not disturb
• AEC, AGC and ambient noise reduction

Display and interface

• 1.8-inch colour TFT LCD, 128 x 160
• 3.5mm headset jack
• Full-duplex speakerphone

Battery and power

• 2 x 800mAh Ni-MH low self-discharge AAA batteries
• Up to 20 hours talk time
• Up to 250 hours standby time
• Universal power supply for the charging cradle

Physical and environmental

• Handset: 155 x 50 x 26 mm, 138g
• Charging cradle: 35 x 63.5 x 54 mm, 71g
• Operating temperature: -10°C to 50°C
• Storage temperature: -20°C to 60°C
• Humidity: 10% to 90% non-condensing

Security and management

• DECT authentication and encryption
• TR-069 and XML configuration file provisioning
• GDMS cloud device management
• Compliance: CE, FCC, IC, RCM

Works with

• Grandstream DP750 — original DECT base, supports up to 5 handsets
• Grandstream DP752 — long-range base with 10 SIP accounts
• Grandstream DP755 — current long-range base with 20 SIP accounts
• Grandstream DP760 repeater — extends DECT coverage into outbuildings and basements
• All Grandstream DECT cordless
• Grandstream UCM IP PBX range — register the DECT base to an on-site or cloud PBX

Frequently asked questions

Can the DP720 work on its own?

No. It is a handset only and must be registered to a Grandstream DECT base station — a DP750, DP752 or DP755. If you do not already have one, you will need a base as well as the handset.

How many DP720 handsets can one base support?

That depends on the base. A DP755 supports up to 20 SIP accounts and 20 lines across its registered handsets; a DP752 or DP750 supports up to 10. Check your base station's handset registration limit before ordering.

What range should I realistically expect indoors?

Grandstream quotes up to 50 metres indoors and up to 350 metres outdoors with a DP752 or DP755. Real-world indoor range depends on wall construction — solid brick and steel shelving will reduce it. A DP760 repeater extends coverage where a single base is not enough.

Will the DP720 work with a DP730 on the same base?

Yes. Grandstream DECT bases can register a mix of handset models, so a DP720 can sit alongside DP722 or DP730 handsets on the same system.

How long does the battery last between charges?

Up to 20 hours of talk time and around 250 hours of standby from the two supplied 800mAh AAA cells, so most users only need to dock the handset overnight.

Not sure whether you need a base station as well? Call 0333 242 1314 or email sales@clisecure.com and we will check what your existing DECT system supports.