My DP720 handset keypad is locked, how can I unlock it?
User can lock/unlock the keypad of the handset by pressing the lock key button (#) for 2 seconds.
My DP750 base station is receiving unknown/ghost calls periodically via my SIP accounts, and the DP720 handsets keep ringing, how can I block such calls?
This is a result of the device being port scanned by external users. To avoid this issue, make sure to set "Only Accept SIP Requests from Known Servers” to Yes from the DP750 Web UI Profiles ProfileX(X=1-4) SIP Settings Security Settings.
My handset is not showing the correct time, what do I need to do?
The DP750 automatically sync up the time with the configured NTP Server and adjusts the time depending on the selected time zone. When a DP720 handset is registered to the base station, the time will be synced up automatically between DP720 and DP750.
If the time is not displayed correctly on the Handset, make sure that the DP750 base station is able to reach the NTP Server to sync up the date/time. You may try to reboot the base station.
What are the frequency bands supported by DP750/DP720?
The frequency bands supported are:
• 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)
What is the battery life time of DP720?
Up to 20-hour talk time, and up 250-hour standby time when the batteries are fully charged.
What is the difference between DP750 and DP720?
DP750 is the DECT base station, while DP720 is the handset.
What is the wireless range covered by DP750 base station?
DP750 base station covers up to 50m (~165 feet) indoor and up to 300m (~1000 feet) in outdoor environments.
Which audio codecs does DP750/DP720 support?
G.711µ/a-law, G.723.1, G.729A/B, G.726-32, iLBC, G.722, OPUS, G.722.2/AMR-WB (special order), in-band and out-of-band DTMF (in audio, RFC2833, SIP INFO), VAD, CNG, PLC and AJB.
Which languages are available on DP720 handset?
The supported languages are: English, German, Spanish, French, Arabic, Hebrew, Italian, Russian, Netherlands, Japanese, Polish, Czech, Chinese Simple, Chinese Tradition, Korean, Portuguese, Slovakian, Serbian, Turkish.