Grandstream Networks, Inc.
DP750/DP720
User Guide
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DP750/DP720 User Guide
COPYRIGHT
©2016 Grandstream Networks, Inc. http://www.grandstream.com
All rights reserved. Information in this document is subject to change without notice. Reproduction or
transmittal of the entire or any part, in any form or by any means, electronic or print, for any purpose
without the express written permission of Grandstream Networks, Inc. is not permitted.
The latest electronic version of this user manual is available for download here:
http://www.grandstream.com/support
Grandstream is a registered trademark and Grandstream logo is trademark of Grandstream Networks, Inc.
in the United States, Europe and other countries.
CAUTION
Changes or modifications to this product not expressly approved by Grandstream, or operation of this
product in any way other than as detailed by this User Manual, could void your manufacturer warranty.
WARNING
Please do not use a different power adaptor with your devices as it may cause damage to the products and
void the manufacturer warranty.
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DP750/DP720 User Guide
GNU GPL INFORMATION
DP750 firmware contains third-party software licensed under the GNU General Public License (GPL).
Grandstream uses software under the specific terms of the GPL. Please see the GNU General Public
License (GPL) for the exact terms and conditions of the license.
Grandstream GNU GPL related source code can be downloaded from Grandstream web site from:
http://www.grandstream.com/sites/default/files/Resources/gpl_dp750.tar.gz
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DP750/DP720 User Guide
Table of Content
DOCUMENT PURPOSE ................................................................................................. 8
CHANGE LOG ................................................................................................................ 9
Firmware Version 1.0.2.16 ..................................................................................................................... 9
Firmware Version 1.0.1.14 ..................................................................................................................... 9
Firmware Version 1.0.1.4 ..................................................................................................................... 10
Firmware Version 1.0.0.16 ................................................................................................................... 10
GUI INTERFACE EXAMPLES ...................................................................................... 11
WELCOME ................................................................................................................... 12
PRODUCT OVERVIEW ................................................................................................ 13
Feature Highlights ................................................................................................................................ 13
DP750 Technical Specifications ........................................................................................................... 14
DP720 Technical Specifications ........................................................................................................... 15
GETTING STARTED ..................................................................................................... 17
Equipment Packaging .......................................................................................................................... 17
Connecting DP750 ............................................................................................................................... 18
Connecting via AC power ............................................................................................................. 18
Connecting via PoE ...................................................................................................................... 18
Setting up DP720 handset ................................................................................................................... 19
Battery Information ....................................................................................................................... 19
Setting up the Charge Station .............................................................................................................. 20
DP750 LED Patterns............................................................................................................................ 20
DP720 Handset Description ................................................................................................................ 21
DP720 Icons Description ..................................................................................................................... 22
DP720 Handset Menu.......................................................................................................................... 25
BASIC OPERATIONS ................................................................................................... 28
Turning the Handset ON / OFF ............................................................................................................ 28
Register DP720 Handset to DP750 Base Station ............................................................................... 28
Using DP720 with multiple DP750 base stations ................................................................................ 29
Registering DP720 to an additional DP750 base station ............................................................. 29
Switching between different base stations ................................................................................... 30
Unregister the DP720 .......................................................................................................................... 31
Obtain DP750 Base Station IP Address via paired DP720 .................................................................. 31
Setting the Key Lock ............................................................................................................................ 32
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DP750/DP720 User Guide
Locating a DP720 Handset from DP750 Base station ......................................................................... 32
Locate via DP750 Web UI ............................................................................................................ 32
Locate via DP750 Base station .................................................................................................... 33
Checking System Status ...................................................................................................................... 33
Basic Network Settings ........................................................................................................................ 34
Register a SIP Account ........................................................................................................................ 35
Register account via web user interface ...................................................................................... 35
Return to Idle Screen ........................................................................................................................... 37
Change Menu and Backlight Timeout .................................................................................................. 37
PHONE SETTINGS....................................................................................................... 38
Editing the Handset’s name ................................................................................................................. 38
Changing the Base PIN Code .............................................................................................................. 38
Selecting the Menu Language ............................................................................................................. 39
Activate/Deactivate Hands-Free Mode ................................................................................................ 40
Muting the Microphone ........................................................................................................................ 40
Adjusting Speaker and Earpiece Volume ............................................................................................ 40
Ringtones ............................................................................................................................................. 41
Setting the Ringer Volume on the Handset .................................................................................. 41
Setting the Ringer Melody on the Handset ................................................................................... 41
Advisory Tones ............................................................................................................................. 42
Date and Time ...................................................................................................................................... 43
Outgoing Default Line .......................................................................................................................... 44
Factory Functions ................................................................................................................................ 44
Firmware Upgrade ............................................................................................................................... 45
Reboot DP750 Base Station ................................................................................................................ 46
Reset DP720 Handset ......................................................................................................................... 46
CALL OPERATIONS .................................................................................................... 47
Placing calls ......................................................................................................................................... 47
Make a Call using a Line ..................................................................................................................... 47
Dialing from Call history ....................................................................................................................... 48
Dialing from Phonebook....................................................................................................................... 48
Answering Calls ................................................................................................................................... 49
Ending Calls ......................................................................................................................................... 49
Rejecting Calls ..................................................................................................................................... 49
Auto Answer ......................................................................................................................................... 49
Direct IP Call ........................................................................................................................................ 50
Call Hold/Resume ................................................................................................................................ 50
Call Waiting .......................................................................................................................................... 50
Do Not Disturb ..................................................................................................................................... 51
Call forward .......................................................................................................................................... 51
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DP750/DP720 User Guide
Call transfer .......................................................................................................................................... 52
Blind Transfer ................................................................................................................................ 52
Attended Transfer ......................................................................................................................... 52
Speed Dial ........................................................................................................................................... 52
3-Way Conference ............................................................................................................................... 53
Voice Mail ............................................................................................................................................. 53
Set Voice mail feature code .......................................................................................................... 53
Play voice mail messages ............................................................................................................ 53
Call Features ........................................................................................................................................ 54
RESTORE FACTORY DEFAULT SETTINGS ............................................................... 56
EXPERIENCING DP750/DP720 ................................................................................... 57
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DP750/DP720 User Guide
Table of Tables
Table 1: DP750 Features in a Glance ......................................................................................................... 13
Table 2: DP720 Features in a Glance ......................................................................................................... 13
Table 3: DP750 Technical Specifications .................................................................................................... 14
Table 4: DP720 Technical Specifications .................................................................................................... 15
Table 5: Equipment Packaging ................................................................................................................... 17
Table 6: DP750 Led Patterns ...................................................................................................................... 20
Table 7: Handset Keys Description ............................................................................................................. 21
Table 8: DP720 Icons Descriptions ............................................................................................................. 22
Table 9: DP720 Info description .................................................................................................................. 33
Table 10: Call Features ............................................................................................................................... 54
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DP750/DP720 User Guide
Table of Figures
Figure 1: DP720 Package Contents ........................................................................................................... 17
Figure 2: DP750 Package Contents ........................................................................................................... 17
Figure 3: DP750 Back View ........................................................................................................................ 18
Figure 4: Connecting the Base station ........................................................................................................ 18
Figure 5: Setting up the DP720 ................................................................................................................... 19
Figure 6: Setting up the charger station ...................................................................................................... 20
Figure 7: Handset Keys Description ........................................................................................................... 21
Figure 8: DP720 Menu Structure ................................................................................................................ 25
Figure 9: DECT Status - Subscribe ............................................................................................................. 28
Figure 10: Registration process .................................................................................................................. 29
Figure 11: Multiple Base Stations Registration ........................................................................................... 30
Figure 12: Switching Between Base Stations ............................................................................................. 30
Figure 13: Locate Handset via Web UI ....................................................................................................... 33
Figure 14: Network Settings configuration .................................................................................................. 34
Figure 15: SIP Settings ............................................................................................................................... 35
Figure 16: Sip Accounts Settings ................................................................................................................ 36
Figure 17: Account Status ........................................................................................................................... 37
Figure 18: Handset Name editing ............................................................................................................... 38
Figure 19: Changing Admin Base PIN Code............................................................................................... 39
Figure 20: Handset Language .................................................................................................................... 40
Figure 21: Ringer Volume ........................................................................................................................... 41
Figure 22: Calls Ringtones .......................................................................................................................... 42
Figure 23: Advisory Tone ............................................................................................................................. 43
Figure 24: Date and Time Settings ............................................................................................................. 43
Figure 25: Factory Functions ...................................................................................................................... 45
Figure 26: New Firmware Available Notification ......................................................................................... 45
Figure 27: Firmware Upgrade ..................................................................................................................... 45
Figure 28: Rebooting the Base Station ....................................................................................................... 46
Figure 29: Resetting the Base Station ........................................................................................................ 46
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DP750/DP720 User Guide
DOCUMENT PURPOSE
This document describes the basic concept and tasks necessary to use and configure your DP720 via the
LCD menu and also using the DP750 base station. And it covers the handset installation, basic operations
and call features. Please visit http://www.grandstream.com/support to download the latest “DP750/DP720
User Guide”.
This guide covers following topics:
Product Overview
Getting Started
Basic Operations
Phone settings
Call Operations
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DP750/DP720 User Guide
CHANGE LOG
This section documents significant changes from previous versions of user guide for DP750/DP720. Only
major new features or major document updates are listed here. Minor updates for corrections or editing are
not documented here.
Firmware Version 1.0.2.16
Re-arranged the Handset Menu Settings. [DP720 Handset Menu]
Changed menu “Line Status” in Call Settings to “Lines”. [Lines]
Changed menu “Number” in set voice Mail to “VM Access Number”.
Added headset detection and icon for DP720 dial mode screen. [DP720 Icons Description]
Added ability to bridge conference before third party answers. [3-Way Conference]
Added ability to reboot from DP720 handset. [Reboot DP750 Base Station]
Improved alarm snooze icon. [DP720 Icons Description]
Added DP720 LCD auto turn on feature when pickup from or reposition to charger.
Added + button support for keypad dialing. [DP720 Handset Description] [Make a Call using a
Line]
Added Serbian, Slovakian languages.
Improved support for Czech, Dutch, German, Hebrew, Japanese, Korean, Turkish languages
Firmware Version 1.0.1.14
Added snooze time settings for alarm function. [Alarm Settings]
Added snooze icon. [DP720 Icons Description]
Updated alarm icon. [DP720 Icons Description]
Removed IVR (Interactive Voice Response).
Added contact name to delete confirmation.
Added use Line from Contacts when dialing out of phonebook. [Dialing from Phonebook]
Added VM, missed calls, headset icon. [DP720 Icons Description]
Removed “Intercom” feature.
Removed “Internal Call” from audio ring tone menu.
Adjusted Call History and Contacts menu architecture. [DP720 Handset Menu]
Moved "Edit Dial" option to last one in Call History and Contacts menu option. [Dialing from Call
history] [Dialing from Phonebook]
Hide empty fields when displaying contact info.
Hide icon after press back key in idle misses call or VM alert screen.
Moved “Standard ring” to last one of ring tone list. [Ringtones]
Missed Call can be dialed back via related SIP profile using softkey.[Dialing from Call history]
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DP750/DP720 User Guide
Firmware Version 1.0.1.4
Added Call and Delete softkeys during off-hook dial. [Placing calls]
Added left softkey for Voice mail alert window to enter the Play Message window. [Play voice mail
messages]
Added Display line name info immediately after off-hook. [Placing calls]
Changed to only press ESC key to show factory menu.
Added Dial number immediately after off-hook.
Added Dialing GUI enhancements.
Added ability to configure menu key timeout. [Change Menu and Backlight Timeout]
Added Handset will prompt “Saved successfully” if configuring call forward settings in ring group.
Added advisory tone for handset put in and out of cradle.
Added ability to configure menu key timeout.
Added when last name is none use the first name for speed dial record name.
Added when handset enter IVR, press RSK hold key will delete dial number.
Added stop dial tone if first key not number key after off hook
Firmware Version 1.0.0.16
This is the initial version for DP750/DP720.
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DP750/DP720 User Guide
GUI INTERFACE EXAMPLES
http://www.grandstream.com/sites/default/files/Resources/dp750_web_gui.zip
1. Screenshot of Login Page
2. Screenshots of Status Pages
3. Screenshots of Profiles Pages
4. Screenshots of DECT Pages
5. Screenshots of Phonebook Pages
6. Screenshots of Settings Pages
7. Screenshots of Maintenance Pages
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DP750/DP720 User Guide
WELCOME
Thank you for purchasing Grandstream DP720 DECT IP Phone, the DP720 is the next generation of
versatile, affordable, high quality and easy-to-use, high quality DECT cordless IP phones for small
business and residential users. These compact and durable DECT IP phones allow users mobility
throughout their home or office while maintaining the benefits of VoIP calling with a reliable and convenient
wireless voice communications. Moreover, it provides many widely accepted benefits of the DECT
standard, including compact size, superb HD audio quality, rich feature set, market leading
price-performance and wide range radio coverage which allow users to enjoy the benefits of mobility for a
minimum investment
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DP750/DP720 User Guide
PRODUCT OVERVIEW
Feature Highlights
The following tables contain the major features of the DP750 / DP720:
Table 1: DP750 Features in a Glance
Table 2: DP720 Features in a Glance
DP750
5 handsets.
10 accounts.
10 lines.
4 concurrent calls.
PoE power support.
300m range outdoor / 50m range indoor.
DP720
DECT cordless HD.
1.8 inch (128x160) TFT color LCD.
250 hours standby / 20 hours talk time.
15 languages embedded.
10 accounts.
10 lines.
5 ring modes.
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DP750/DP720 User Guide
DP750 Technical Specifications
The following table resumes all the technical specifications including the protocols / standards supported,
voice codecs, telephony features, languages and upgrade/provisioning settings for the Base station
DP750.
Table 3: DP750 Technical 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)
Range: up to 300 meters outdoor and 50 meters indoor
Peripherals
5 LED indicators: Power, Network, Register, Call, DECT
Reset button, Pairing/Paging button
One 10/100 Mbps auto-sensing Ethernet port with integrated PoE
Protocols/Standards
SIP RFC3261, TCP/IP/UDP, RTP/RTCP, HTTP/HTTPS, ARP/RARP, ICMP, DNS
(A record, SRV, NAPTR), DHCP, PPPoE, SSH, TFTP, NTP, STUN, SIMPLE,
LLDP-MED, LDAP, TR-069, 802.1x, TLS, SRTP, IPv6 (pending)
Voice Codecs
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, AJB
Telephony Features
Hold, transfer, forward, 3-way conference, downloadable phonebook (XML, LDAP,
up to 3000 entries), call waiting, call log (up to 300 records), auto answer, flexible
dial plan, music on hold, server redundancy and fail-over
Sample
Applications
Currency (pending)
QoS
Layer 2 QoS (802.1Q, 802.1p) and Layer 3 QoS (ToS, DiffServ, MPLS)
Security
User and administrator level access control, MD5 and MD5-sess based
authentication, 256-bit AES encrypted configuration file, TLS, SRTP, HTTPS,
802.1x media access control, DECT authentication & encryption
Multi-language
English, Czech, German, Spanish, French, Hebrew, Nederlands, Japanese,
Chinese Simple, Chinese Tradition, Korean, Portuguese, Slovakian, Serbian,
Turkish.
Upgrade/
Provisioning
Firmware upgrade via TFTP/HTTP/HTTPS, mass provisioning using TR-069 or
AES encrypted XML configuration file
Multiple SIP
Accounts
Up to ten (10) distinct SIP accounts per system
Each handset may map to any SIP account(s)
Each SIP account may map to any handset(s)
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DP750/DP720 User Guide
Ring Group
Flexible options when multiple handsets share the same SIP account
Circular Mode: all phones ring sequentially, starting with the phone after
the one which rang last.
Linear Mode: all phones ring sequentially in the predetermined order,
starting with the first phone each time.
Parallel Mode: all phones ring concurrently; after one phone answers,
the remaining available phones can make new calls
Shared Mode: all phones ring concurrently and always share the same
line (similar to analog phones).
Power & Green
Energy Efficiency
Universal Power Supply Input AC 100-240V 50/60Hz; Output 5VDC, 1A;
Micro-USB connection; PoE: IEEE802.3af Class 1, 0.44W–3.84W
Package Content
Base unit, Universal Power Supply, Ethernet cable, Quick Start Guide, GPL
Statement
Dimensions
28.5 mm (H) x 130 mm (W) x 90 mm (D)
Weight
Base unit: 143g, Universal Power Supply: 50g; Package: 360g
Temperature
and Humidity
Operation: -10º to 55ºC (14 to 131ºF); Storage: -20º to 60ºC (-4 to 140ºF);
Humidity: 10% to 90% non-condensing
Compliance
FCC: Part 15D, 47 CFR 2.1093, Part 15B
CE: EN60950; EN301489-1-6; EN301406
RCM: AS/NZS60950 (Pending)
DP720 Technical Specifications
The following table resumes all the technical specifications including the protocols / standards supported,
voice codecs, telephony features, languages and upgrade/provisioning settings for the DP720 handset.
Table 4: DP720 Technical 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)
Range: up to 300 meters outdoor and 50 meters indoor
Peripherals
1.8 inch (128x160) color TFT LCD
23 keys including 2 softkeys, 5 navigation / menu keys, 4 dedicated function keys
for SEND, POWER/END, SPEAKERPHONE, MUTE
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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DP750/DP720 User Guide
Protocols/Standards
Hearing Aid Compatibility (HAC) compliant
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 DP750), AEC, AGC, Ambient noise reduction
Telephony Features
Hold, transfer, forward, 3-way conference, call park, call pickup, downloadable
phonebook, call waiting, call log, auto answer, click-to-dial, flexible dial plan,
music on hold
Sample
Applications
Currency (pending)
HD Audio
Yes, in both Handset and Speakerphone modes
Security
DECT authentication & encryption
Multi-language
English, Czech, German, Spanish, French, Hebrew, Nederlands, Japanese,
Chinese Simple, Chinese Tradition, Korean, Portuguese, Slovakian, Serbian,
Turkish.
Upgrade/
Provisioning
Software Upgrade Over-The-Air (SUOTA), handset provisioning Over-The-Air
Multiple Line
Access
Each handset may access up to 10 lines
Power & Green
Energy Efficiency
Universal Power Supply Input AC 100-240V 50/60Hz; Output 5VDC 1A;
Micro-USB connection; Rechargeable 800mAh Ni-MH Low Self-Discharge (LSD)
AAA batteries (250 hours of standby time and 20 hours of talk time)
Package Content
Handset unit, universal power supply, charger cradle, belt clip, 2 batteries, Quick
Start Guide
Dimensions
(H x W x D)
Handset: 155 x 50 x 26 mm, charger cradle: 35 x 63.5 x 54 mm
Weight
Handset: 138g, charger cradle: 71g, universal power supply: 50g; Package: 360g
Temperature
and Humidity
Operation: -10º to 50ºC (14 to 122ºF); Charging: 0 to 45ºC (32 to 113ºF); Storage:
-20º to 60ºC (-4 to 140ºF); Humidity: 10% to 90% non-condensing
Compliance
FCC: Part 15D; 47 CFR 2.1093 & IEEE1528-2013, Part68, Part 15B
CE: EN60950; EN301489-1-6; EN301406; EN50360; EN62209-1
RCM: AS/NZS60950; AS/ACIF S040; AS/ACIF S004; AS/CA S004:2013
(Pending)
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DP750/DP720 User Guide
GETTING STARTED
This chapter provides basic installation instructions including the list of the packaging contents and also
information for obtaining the best performance with the DP720 IP DECT phone and its base station
DP750.
Equipment Packaging
Table 5: Equipment Packaging
Figure 1: DP720 Package Contents
Note: Check the package before installation. If you find anything missing, contact your system administrator.
DP720
DP750
1 Handset unit
1 Universal power supply 5V
1 Charger cradle
1 Belt clip
2 Chargeable batteries
1 Quick start guide
1 Base unit
1 Universal power supply 5V
1 Ethernet cable
1 Quick start guide
1 GPL Statement
Figure 2: DP750 Package Contents
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DP750/DP720 User Guide
Connecting DP750
To setup the DP750 base station, please follow the steps below:
Figure 3: DP750 Back View
You have two options for power and network connection of the base station: AC power or Power over
Ethernet (PoE)
Connecting via AC power
1. Connect the micro-USB connector into the related port on the base station and connect the other
end of the power adapter into an electrical power outlet.
2. Connect the supplied Ethernet cable between the internet port on the base station and the internet
port in your network or the switch/hub device port.
Connecting via PoE
To connect the base station using the POE, you need to connect the Ethernet cable provided (or 3rd party
network cable) between the network socket on the base station to Ethernet port of the POE switch/hub.
Figure 4: Connecting the Base station
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DP750/DP720 User Guide
Setting up DP720 handset
Please follow below steps to insert batteries into the handset:
1. Open the battery compartment cover.
2. Insert the batteries in the correct polarity.
3. Close the battery compartment cover.
Note: Please charge the batteries fully before using the handset for the first time
Figure 5: Setting up the DP720
Battery Information
Technology: Nickel Metal Hydride (Ni-MH)
Size: AAA
Voltage: 1.2V
Capacity: 800mAh
Charging time: 12 hours from empty to full
Standby time: up to 250 hours
Talk time: up to 20 hours active talk time
In order to get the best performance of your DP720 handset, we recommend using original batteries
provided in the package or batteries compliant with above specifications.
The specifications may differ depending on the age and capacity of the batteries used.
Important Note: Be careful when inserting the batteries into your handset to avoid any risk of short-circuits
which lead to damage your batteries and/or the handset itself. Do not use damaged battery which can
increase the risk of serious harm.
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DP750/DP720 User Guide
Setting up the Charge Station
Please refer to the following steps for setting up the charge station and charging the handset:
1. Connect the DC plug on the power adapter to the micro-USB connector on the charge station.
2. Connect the other end of the power adapter into an electrical power outlet.
3. After setting up the handset and charger station, place the handset in the charger station.
Figure 6: Setting up the charger station
DP750 LED Patterns
The DP750 has 5 LED lights on it. Please see on the following table the meaning of each light.
Table 6: DP750 Led Patterns
LED Light
Status
Indicates power ON/OFF
Indicates access to the Network. Remains ON while there is Access to the Network
Indicates if a SIP account is registered
Indicates status of the lines.
Blinking: A line is in use. Solid ON: All lines are free.
The radio icon for pairing the DP720 and DP750, if we keep pressing the radio button
it starts blinking indicating pairing attempt.
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DP750/DP720 User Guide
DP720 Handset Description
The LCD screen and the keypad are the main hardware components of the DP720.
Figure 7: Handset Keys Description
Table 7: Handset Keys Description
Key
Description
1.
Power and Charging
Indication Light
Red: Charging. Green: Charge completed.
Blinking: Missed call(s) or Voice Mail received.
2.
Earphone
Delivers audio output.
3,5
Left and right softkeys
Correspond to functions displayed on the LCD. These functions
change depending on the current context.
4.
LCD display
Shows call information, handset status icons, prompt messages, etc.
6.
4 Arrow key
combination
Permits navigation of the cursor through the displayed menu options.
7.
OK/Selection key
Selects the option chosen by the cursor. (Enters the main menu from
the home screen.)
8.
Off-hook / Dial key
Enters dialing mode, or dials number entered.
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DP750/DP720 User Guide
9.
On-hook / Power key
Terminates calls, or turns the handset on / off.
10.
Alphanumeric Keypad
Provides the digits, letters, and special characters in context-sensitive
applications. For + sign, press and hold key 0.
11.
Hands-free / Speaker
key
Switches between handset and hands-free / speaker modes.
12.
Mute key
Activates or deactivates the mute feature.
13.
Microphone
Picks up audio earpiece and hands-free calls.
DP720 Icons Description
The following table contains the description of each icon that might be displayed on the screen of DP720.
Table 8: DP720 Icons Descriptions
Alarm
Alarm icon. The icon shows when set alarm.
Snooze
Snooze icon. The icon shows when set snooze.
Battery status
Not equipped with battery
Battery status
Battery empty
Battery status
Battery low
Battery status
Battery normal
Battery status
Battery full
Battery status
Charging
Signal status
Not subscribed
Signal status
Not in range
Signal status
Signal very low
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DP750/DP720 User Guide
Signal status
Signal low
Signal status
Signal normal
Signal status
Signal good
Signal status
Signal very good
Microphone MUTE Status
OFF - Not muted
ON – Muted
Speaker status
OFF - Speaker is inactivated
ON - Speaker is activated
Headset icon
Missed Call icon
Voicemail icon
Ringtone status
OFF - Ringtone off (Silent mode)
ON - Ringtone on
Keypad Lock status
OFF - Keypad unlock
ON - Keypad locked
Incoming Call notification
Outgoing Call notification
Missed Call notification
Incoming Call notification
Outgoing Call notification
Voicemail notification
Contacts
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DP750/DP720 User Guide
Call History
Voice Mail
Settings
Call Settings
Tools
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DP750/DP720 User Guide
DP720 Handset Menu
The handset has an easy-to-use menu structure. Every menu opens a list of options. To open the main
menu, press “Menu” (left softkey) when the handset is on and in standby mode. Press Arrow keys to
navigate to the menu option you require. Then press “Select” (left softkey) or OK/Selection key to access
further options or confirm the setting displayed. To go to the previous menu item, press “Back” (right
softkey). You can press Power key at any time to cancel and return to standby mode. If you do not press
any key, the handset automatically reverts to standby mode after 20 seconds.
Figure 8: DP720 Menu Structure
Contacts
Call History
Voice Mail
Settings
Call Settings
Tools
Missed Calls
Accepted Calls
Outgoing Calls
All calls
Alarm
Play Message
Set Voice Mail
Do Not Disturb
Call Waiting
Call Forward
Speed Dial
Outgoing Default Line
Auto Answer
Lines
Registration
Handset Name
Phone Language
Date / Time
Audio
Display
Network Settings
Sip Settings
System Settings
Firmware Upgrade
Factory Functions
Status
Time
Date
Register
Deregister
Select Base
Advisory Tone
Ringtones
Volume
Model(RF)
Firmware(BS)(HS)
IP Address
Subnet Mask
Gateway
MAC Address
IPEI
Change Base PIN
Factory Reset
Reboot Base
Private
Shared
IP Settings
Backlight Timeout
Menu Key Timeout
Diagnostic Mode
Audio Loopback
LCD ON /OFF
LCD Diagnostic
System Monitoring
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DP750/DP720 User Guide
Contacts
Private: Private contacts include contacts visible in the current handset
only. You can add, edit, delete, and call all the entries in private contacts.
Shared: Shared contacts are the contacts shared between the handsets
subscribed to the DP750 base station. You can add, edit, delete, edit and
call all the entries in shared contacts as well.
Call History
Display the call history: Missed Calls, Accepted Calls, Outgoing Calls or All
Calls. You can add contacts to Shared Contacts directly from call logs.
Voice Mail
Play Message: Play the voice mail messages received.
Set Voice Mail: Configure the voice mail parameters.
Settings
Registration
Register and unregister your handset and also search for base station.
Handset Name
Change the handset’s name.
Phone Language
Select the language to be displayed on the phone's LCD. (Default is
English.)
Date/Time
Configure date and time on the handset.
Audio
Specify ringtones for incoming calls, the volume, and advisory tones
(keypad, confirmation, low battery notifications).
Display
Configure backlight timeout.
Network Settings
Configure IP addresses and select DHCP/Static IP mode.
SIP Settings
Configure/View SIP accounts settings.
System settings
Change base PIN code; Perform factory reset.
Firmware Upgrade
Upgrade the firmware version of the handset.
Factory Functions
- Diagnostic Mode
All LEDs will light up, and the LCD will display a table listing the
names of all keys in red. Press any key to diagnose; the key's name
will display in blue. After all keys are diagnosed, a prompt message
(“PASS”) will display; press “Back” (right softkey) to exit.
- Audio Loopback
Speak to the phone using speaker/handset/headset. If you can hear
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your voice, your audio is working fine. Press “Exit” softkey to exit
audio loopback mode.
- LCD ON / OFF
Select this option to turn off LCD. Press any button to turn on LCD.
- LCD Diagnostic
Select this option to enter LCD Diagnostic mode. Press
“Next” (left softkey) to display white screen. Continue pressing the left
softkey to view all remaining screens (black, blue, red, and green) and
then exit. End the test early by pressing the right softkey.
- System Monitoring
Displays the RSSI and battery voltage information.
Status
Display the handset status (Firmware, Model, Hardware, IPEI …)
Call Settings
Do Not Disturb
Enable/disable do not disturb mode on the phone.
Call Waiting
Configure call waiting feature.
Call Forward
Configure call forward feature.
Speed Dial
Assign the numbers for speed dial.
Outgoing Default Line
Select outgoing default line.
Auto Answer
Enable/disable auto answer feature.
Lines
Display the line status.
Tools
Alarm
- Set Alarm:
Configure the alarm
- Alarm Settings:
Configure Alarm Settings (Alarm Volume, Alarm Tone, Snooze Time)
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BASIC OPERATIONS
Turning the Handset ON / OFF
To turn ON the handset
- Long press on Power key until the LCD screen lights up.
To turn OFF the handset
- Long press on Power key again when the handset is idle until the display turns off.
Register DP720 Handset to DP750 Base Station
1. On DP750 Base station, press and hold the Radio/Page button for 7 seconds until the Radio icon
starts blinking to start the subscription process. Or Access web UI, go to Status >DECT Status
and press Subscribe button to Open Subscription.
2. On DP720, Press “Menu” (left softkey or the selection key ) to bring up operation menu.
3. Press Arrow keys to move the cursor to Settings and navigate to Registration, then press
“Select” (left softkey ).
Figure 9: DECT Status - Subscribe
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4. Navigate to Register, then press “Select” while the DP750 Radio icon is blinking.
5. Select BaseX (X=1-4) corresponding to the desired base station DP750, then press Subscribe.
6. The DP720 will search for nearby base stations and will display the RFPI code and base station
name of the discovered DP750.
7. Press Subscribe to pair with the displayed DP750.
8. The DP720 will display Easy Pairing on the LCD and play an audible buzz when successful. Then
it will return to the home screen, displaying the handset name and number assigned by the
registered base station.
Using DP720 with multiple DP750 base stations
DP720 handset can be registered with up four different DP750 base stations.
Registering DP720 to an additional DP750 base station
Considering DP720 is previously registered to an initial base station, please follow below steps to register
a handset to an additional base station:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings and select Registration.
Figure 10: Registration process
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DP750/DP720 User Guide
3. Select Register.
4. Navigate to an unsubscribed Base using arrow keys, and click on Subscribe.
5. Make sure that the subscription is opened on the new base station.
Switching between different base stations
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Select Registration.
4. Navigate to Select Base using arrow keys.
5. Select the desired base station and press Select.
Figure 11: Multiple Base Stations Registration
Figure 12: Switching Between Base Stations
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Unregister the DP720
1. On DP720, press “Menu” (left softkey or the selection key ) to bring up operation menu.
2. Press arrow keys to move the cursor to Settings and then press “Select”.
3. Navigate to Registration, then press “Select” (left softkey ).
4. Navigate to Deregister.
5. Select the Handset to be unregistered and press “Deregister” (left softkey ).
6. Enter the system PIN code (default: 0000).
7. Press “Done” (left softkey ) to confirm or “Back” (right softkey ) to cancel.
Obtain DP750 Base Station IP Address via paired DP720
DP750 is by default configured to obtain IP address from DHCP server where the unit is located. In order
to know which IP address is assigned to your DP750, please follow below steps using a paired DP720
handset with your DP750 base station.
Please see Register DP720 Handset to DP750 Base Station
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Press Arrow (Up, Down, Left, Right) keys to move the cursor to Settings , then press
“Select” (left softkey ).
3. Press up arrow key to navigate to Status, then press “Select”.
4. The LCD screen will display information about the DP720.
5. Using arrow keys, navigate down to view the IP address of the DP750.
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DP750/DP720 User Guide
Setting the Key Lock
You can lock the keypad against unintentional entries. It is, however, still possible to pick up incoming calls
even with the keypad locked.
To enable the Keypad Lock
1. Press the Pound key “#” and hold for approximately 2 seconds.
2. The display shows Keypad Locked briefly and the key lock icon appears in the display.
To disable the Keypad Lock
1. Press and hold Pound key “#” to unlock the keys.
2. Keypad Unlocked appears briefly in the display and a windows prompt will be displayed to confirm
that the keypad is unlocked.
Locating a DP720 Handset from DP750 Base station
In some situations, you may have a DP720 handset incorrectly positioned and you don’t know its current
location. You can locate a DP720 handset from his registered DP750 base station using below steps:
Locate via DP750 Web UI
1. Access your DP750 base station web UI by entering its IP address in your favorite browser.
2. Enter your admin’s username and password (default username and password: admin/admin).
3. Press Login to access your settings.
4. Go to Status > DECT Status tab.
5. Choose which handset to locate and press its corresponding Page button.
6. A paging call will be received on the selected DP720 handset.
If you press Page All, all registered DP720 handsets will be receiving paging call.
7. Once located, you can press any key on the handset or press Page or Page All to end paging call.
EU
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Locate via DP750 Base station
1. On DP750 Base station back side, press Radio/Page button .
2. All registered handsets will receive paging call, once located, you can terminate the paging calling
by pressing any key on the handsets or the radio/page button again.
Checking System Status
You can view the system status on your handset including the following information of the system:
Table 9: DP720 Info description
Item
Description
Model
Product model info. DP720
Firmware
Current firmware version installed on DP720. i.e.: 1.0.2.4
Hardware
Hardware version of DP720. i.e.: 1.4A
IPEI
International Portable Equipment Identifier.
Unique “serial number” for DECT handsets.
DECT Region
Region of DECT. i.e. EU or US
IP Address
IP address of the base station DP750 if registered.
Subnet Mask
Subnet Mask of the base station DP750 if registered.
Gateway
Gateway IP of the base station DP750 if registered.
MAC address
MAC address of the base station DP750 if registered.
Figure 13: Locate Handset via Web UI
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DP750/DP720 User Guide
To check the handset status
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Browse sub-menus until reaching Status sub-menu and press Select.
Basic Network Settings
Once connected to the network the base station attempts to contact a DHCP server to obtain valid network
settings (e.g., IP address, subnet mask, gateway address and DNS address) by default.
The users could also configure basic network settings manually. In order to configure the network settings
manually, please follow the steps bellow:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Network Settings.
4. Enter the system PIN code (default: 0000) and press the softkey “Save” (left softkey ).
5. To change to static IP, press or to select Static from the IP Settings field.
6. Enter valid values in the IP Address, Subnet Mask, Gateway, DNS Server fields.
7. Press softkey “Save” ( ) to save and apply the new changes.
A message prompt message will be displayed to confirm that the new settings are saved successfully.
Figure 14: Network Settings configuration
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Register a SIP Account
DP750 supports up to 10 SIP accounts, 5 handsets. Each handset can be configured up to 10 accounts.
Please be aware that line settings will be affected by DID settings (hunting group settings) in “DECT - SIP
Account Settings”.
Register account via web user interface
1. Access your DP750 base station web UI by entering its IP address in your favorite browser.
2. Enter your admin’s username and password (default username and password: admin/admin).
3. Press Login to access your settings.
4. Go to Profiles tab and select a profile to use.
DP750 supports up to 4 profiles. A profile is a set of settings including general settings, network
settings, SIP setting, audio setting, call settings and ring tones, and etc.
A profile can be used with different SIP accounts.
5. In General Settings, set the following:
a. Profile Active to Yes.
b. SIP Server field with your SIP server IP address or FQDN.
c. Failover SIP Server with your failover SIP server IP address or FQDN. Leave empty if not
available.
d. Prefer Primary SIP Server to No or Yes depending on your configuration. Set to No if no
failover SIP server is defined. If “Yes”, account will register to primary SIP server when
failover registration expires.
e. Outbound Proxy with your outbound proxy IP address or FQDN. Leave empty if not
available.
6. Press Save and Apply to save your configuration.
7. Go to DECT >SIP Account Settings
Figure 15: SIP Settings
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8. Configure your SIP details in desired account:
a. Account: Select Account row to configure (Account 1 – Account 10).
b. SIP User ID: User account information, provided by VoIP service provider (ITSP). Usually
in the form of digit similar to phone number or actually a phone number.
c. Authenticate ID: SIP service subscriber’s authenticate ID used for authentication. Can be
identical to or different from SIP User ID.
d. Password: SIP service subscriber’s account password to register to SIP server of ITSP.
For security reasons, the password will field will be shown as empty.
e. Name: Any name to identify this specific user.
f. Profile: Select the corresponding Profile ID (1/2/3/4).
g. HS Mode: Assign the account to specific handset (HS1, HS2…) or hunting group mode.
h. Active: Set to Yes. If set to No, account is disabled and will not register.
9. Press Save and Apply to save your configuration.
After applying your configuration, your phone will register to your SIP Server.
You can verify if your DECT phone has registered with your SIP server from your DP750 web interface
under Status > Account Status (a green background with Yes under SIP Registration column for
corresponding account indicates the account has been successfully registered).
Figure 16: Sip Accounts Settings
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Figure 17: Account Status
Return to Idle Screen
Press the Power Key to quickly exit the menu and return back to the main idle screen.
If you do not press any key in a period of time, the LCD screen will automatically exit the menu and return
to the idle screen as well.
When you are navigating on the handset’s menu, and you receive an incoming call, the LCD screen will
automatically exit the menu and you can either accept or reject the call, when the call is terminated, the
LCD screen will return back to the idle screen.
Change Menu and Backlight Timeout
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to Display, and then press “Select” (left softkey ).
4. Set desired time in seconds for Backlight timeout and for Menu timeout. Available value: 15
seconds, 30 seconds, 60 seconds or disabled. (default is 30 seconds)
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DP750/DP720 User Guide
PHONE SETTINGS
This chapter will help you with the instruction for configuring and changing the settings of your DP720,
Editing the Handset’s name
The procedure for changing the name of your handset shown in the display in standby mode is as follows:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Handset Name, and then press “Select” (left softkey ).
4. Enter the desired name and press “Rename” (left softkey ) and then the DP720 will display a
confirmation message that the rename operation was successful.
Changing the Base PIN Code
Users can change their code PIN by following the steps bellow:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select System Settings, and then press “Select” (left softkey ).
4. Enter the current code PIN (By Default is 0000), a new window will be displayed inviting you to
enter the new password, when done press “Save” (left softkey ) and a prompt message will
be displayed to confirm that the new code PIN has been saved successfully.
Figure 18: Handset Name editing
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DP750/DP720 User Guide
Selecting the Menu Language
The DP720 supports displaying texts in different languages. The handset supports 27 languages (see the
table of the technical specifications). The default language of the handset is English. You can change the
language according to your requirement. To change the language of the handset, please proceed as
follows:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Phone language, then select the desired language and press “Select” (Left
softkey ). The LCD screen prompts “Change phone language to xxx (xxx it’ the language you
selected)”
4. Press “Yes” (left softkey ) to accept the change. Text displayed on the handset will change to
the selected language.
Figure 19: Changing Admin Base PIN Code
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DP750/DP720 User Guide
Activate/Deactivate Hands-Free Mode
This function allows you to make a call without having to hold the handset in your hand.
1. Press the Hands free key while you are making a call or on the idle screen to activate
hands free mode.
2. Press the Hands free key again to deactivate the hands free function.
Muting the Microphone
Press the Mute key to switch off the microphone during an established call. You can now talk freely
without the other party hearing you and the icon of mute will be displayed on the screen. Press the
Mute key again to switch the microphone back on.
Adjusting Speaker and Earpiece Volume
Press left key or right key while you are on an established call to set the volume of the earphone /
speaker. You can choose between 5 different levels. The default level is 3:
Volume 1 Volume 4
Volume 2 Volume 5
Volume 3
Figure 20: Handset Language
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DP750/DP720 User Guide
Ringtones
Setting the Ringer Volume on the Handset
You can adjust the ringer volume for an incoming call to one of 6 levels (level 1 to 5 and off). Level 5 is the
highest level. (The DP720 Handset is set to level 3 by default).
In order to configure the desired ringer volume, proceed as follows:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Audio -> Volume
4. Press the left and right arrow keys to change repeatedly and set the desired volume
5. Press “Save” (left softkey ) to confirm the volume, and a message prompt will be displayed to
confirm that the new volume has been successfully saved.
If you select OFF, the icon appears in the display and the handset will not ring for incoming calls.
Setting the Ringer Melody on the Handset
You can change the ringer melody for an incoming call. The device has 8 different ringer melodies for you
to choose from (1-8).
The default setting for the ring tone for a call is melody 1.
In order to configure the desired melody, proceed as follows:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Audio -> Ringtones.
Figure 21: Ringer Volume
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DP750/DP720 User Guide
4. Press “Select” (left softkey ) to confirm the ringtones selected and a message prompt will be
displayed to confirm that the new ringtones has been set successfully.
Advisory Tones
Advisory tones are acoustic signals, which inform you of different actions and states on your handset. The
following advisory tones can be configured independently of each other:
Keypad tone: it’s played when a user presses any key of the keypad.
Confirmation: it’s played when a user saves settings or places the handset in the charger cradle.
Low battery: it’s played if the capacity of the batteries is low or the handset requires charging.
To configure the advisory tones
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Audio -> Advisory tones, and choose which tone you want to change it.
4. Press the left and right arrow keys to either enable or disable the desired tones.
Figure 22: Calls Ringtones
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DP750/DP720 User Guide
5. Press “Save” (left softkey ) to confirm, and a message prompt will be displayed to confirm that
the new settings has been successfully saved.
Date and Time
On the DP720 the Date and time are displayed on the idle screen and it obtains the date and time from the
Simple Network Time Protocol (SNTP) server by default. If your handset cannot obtain the date and time
from the SNTP server, you need to configure the date and time manually. You can configure the time
format and date format respectively. The handset supports two time formats (12 Hour or 24 Hour) and
three date formats (DD/MM/YYYY; MM/DD/YYYY; YYYY/MM/DD).
To configure date and time manually
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to Date and time. Edit the current values in the Date & Time fields (you can change the
date / time format using the left key or right key and press “Set” (left softkey ).
4. Press “Save” softkey to apply your changes.
Figure 23: Advisory Tone
Figure 24: Date and Time Settings
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DP750/DP720 User Guide
Outgoing Default Line
When a handset is configured with more than one line, users can change the default outgoing line on
DP720 handset using the keypad menu by following the steps bellow:
1. Press Menu (left softkey or the selection key ) to bring up operation
menu and access Call settings > Outgoing Default Line .
2. The LCD screen displays all outgoing lines currently assigned to the handset.
Default outgoing line is highlighted with green button , select the desired line
and press “Select” softkey.
Factory Functions
The factory functions include the following diagnostic options:
- LCD diagnostic
- LCD on / off
- Audio loopback
- Diagnostic mode
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Factory Functions and choose which diagnostic, you need to perform, and
then press “Select” (left softkey ).
- Diagnostic mode
All LEDs will light up. All keys’ name will display in red on LCD screen before diagnosing. Press
any key on the keypad to diagnose the key’s function. When done, the key’s name will display in
blue on LCD with a prompt message (PASS). To exit press “Back” (right softkey ).
- Audio loopback
Speak to the phone using speaker/handset/headset. If you can hear your voice, your audio is
working fine. Press “Back” (left softkey ) to exit audio loopback mode.
- LCD ON / OFF
Selects this option to turn off LCD. Press any button to turn on LCD.
- LCD Diagnostic
Enters this option and press Left/Right arrow key to do LCD Diagnostic (you will notice that the
color of the LCD will be changing). Press right softkey to quite.
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DP750/DP720 User Guide
Firmware Upgrade
The DP720 handset is able to detect if a new firmware is available when it is registered to a base station.
Figure 26: New Firmware Available Notification
To upgrade the firmware on your handset, follow the steps bellow:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Firmware Upgrade and press the softkey “Select”.
4. The LCD screen will display a prompt message to confirm the firmware downloading / upgrading
press the right softkey “Back” to dismiss the upgrade process.
Figure 25: Factory Functions
Figure 27: Firmware Upgrade
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DP750/DP720 User Guide
Reboot DP750 Base Station
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Settings -> System Settings and choose Reboot Base.
4. Enter Base PIN code (by default the PIN code is: 0000 ).
5. The LCD screen will displays a prompt message to confirm rebooting the base station, press “Yes”
(left softkey ) to confirm or press “No” (right softkey ) to cancel.
Reset DP720 Handset
The users can reset the new settings made on the handset after performing factory reset. To reset your
handset to the default settings:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Settings .
3. Navigate to select Settings -> System Settings and choose Factory Reset.
4. The LCD screen will displays a prompt message to confirm restoring factory settings, press “Yes”
(left softkey ) to confirm and then the handset will reboot to apply the default settings or press
“No” (right softkey ) to cancel.
Figure 28: Rebooting the Base Station
Figure 29: Resetting the Base Station
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DP750/DP720 User Guide
CALL OPERATIONS
This chapter will guide you to place calls, transferring and holding the incoming calls.
Placing calls
To place calls, you can use the following mode:
Earpiece mode: pressing the off-hook key to dial out.
Speakerphone mode: pressing the speakerphone key to dial out.
Headset mode: pressing the off-hook key to dial out using connected headset.
During the call, you can switch the call mode by pressing the corresponding keys or connecting a headset.
Make a Call using a Line
Making calls require the use of SIP lines. So you should first register the SIP account to the handset
beforehand, after registering the sip lines, you can assign one or more outgoing lines for the handset. The
handset can only use the assigned outgoing line(s) to place calls.
Please refer to the following methods in order to make calls using a line:
Method 1:
Via default outgoing line:
1. Enter the desired number using the keypad.
2. Press Dial key or Speaker key . The handset will use the default outgoing line to
dial out.
3. To terminate the call, press Hang-Up key .
Note : To change the default outgoing line, please refer to Outgoing Default line.
Selecting the outgoing line:
1. Enter the desired number using the keypad.
2. Press the left softkey “Call” .
3. Select the desired line to dial out.
4. To terminate the call, press Hang-Up key .
Method 2:
1. Press Dial key or Speaker key to enter the pre- dialing screen.
2. Enter the number to dial using the keypad.
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3. Press Dial key , # (Use # as dial key” must be configured in web configuration) or wait for
4 seconds and the call will be initiated automatically.
4. To terminate the call, press Hang-Up key .
During the call, you can switch the call mode by pressing the corresponding keys and cancel the
dialing operation by pressing the on-hook key. During the call conversations, you can press the left and
right navigation keys to adjust the volume. The call duration is displayed on the LCD screen while the
call is in progress and call summary will be displayed once the call is terminated.
Notes: - To dial “+” please keep pressing “0” key for about 2 seconds.
- To dial from contacts list, choose a contact using navigation keys and press Dial key .
Dialing from Call history
Users may use their call history entries to initiate calls.
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Call History Icon and then press “Select” (left softkey ).
3. Select the desired entry, then press Dial key to establish the call.
Note: In step 3, users can press “Options” softkey followed by “Edit Dial” option to initiate the call.
The call history list stores the last dialed phone numbers. When the memory of the redial number list is full,
the handset will automatically erase the oldest dialed number when a new number is dialed
Dialing from Phonebook
Users may use their private or shared contacts to initiate calls.
1. Press Contacts (right softkey ) to access phonebook menu.
2. Select Private or Shared phonebook.
3. Select the contact to call.
4. Press Dial Key to initiate the call.
Note: In step 3, users can press “Options” softkey followed by “Edit Dial” option to initiate the call.
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Answering Calls
When receiving an incoming call, you can answer the call using following steps:
Earpiece mode:
Press Dial Key to pick up the call, or “Accept” softkey (left softkey ).
Speakerphone mode:
Press Speaker Key to pick up the call.
Headset mode:
Press Dial Key to pick up the call, or “Accept” softkey (left softkey ) using a connected
headset.
Note:
- To answer an incoming call during an established call, press Dial Key , or the Speaker Key
, or the “Answer” softkey. The incoming call is answered, and the original call is placed on
hold.
- You can switch off the ringer temporarily by pressing Silent softkey.
Ending Calls
To terminate the calls, press Hang-Up key .
Rejecting Calls
To reject an incoming calls, press Hang-Up key or “Reject” softkey (right softkey )
Auto Answer
To simply answer the incoming calls by picking up the handset from the charger cradle without having to
press the off-hook key.
The auto answer feature works only if the handset is placed in the charger cradle.
To activate / deactivate the auto answer feature
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Use arrow keys to reach Call settings , and navigate to Auto Answer using the Up / down
keys arrow.
3. Press the left softkey “Save” after Enabling / Disabling the auto answer option.
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Direct IP Call
Direct IP calling allows two parties, that is, a handset and another VoIP device, to talk to each other in an
ad hoc fashion without a SIP proxy.
Elements necessary to complete a Direct IP Call:
Both DP720 and other VoIP Device, have public IP addresses, or
Both DP720 and other VoIP Device are on the same LAN using private IP addresses, or
Both DP720 and other VoIP Device can be connected through a router using public or private IP
addresses (with necessary port forwarding or DMZ).
Users can perform IP calls using Star code following the below steps:
1. Pick up the handset and press Dial key .
2. Dial *47 followed by the target IP Address.
Note: You can enter directly *47 + target IP address, and then press the dial key to initiate the call.
Examples of direct IP calls
a) If the target IP address is 192.168.0.160, the dialing convention is *47 then 192*168*0*160,
followed by pressing the “#” key if it is configured as a send key or wait 4 seconds. In this case, the
default destination port 5060 is used if no port is specified.
b) If the target IP address/port is 192.168.1.20:5062, then the dialing convention would be:
*47 or Voice Prompt with option 47, then 192*168*0*160*5062 followed by pressing the “#” key
if it is configured as a send key or wait for 4 seconds.
Note: To use direct IP call, Use Random Port setting should be set to NO.
Call Hold/Resume
During an established call, you can put the call on hold and resume following below steps:
1. Press the left softkey to access the call Options and then navigate to Hold.
2. Press “Select”, left softkey to put the call on hold.
3. To resume the call, access the options menu again and navigate to Resume, then press Select.
If you press during the call, the first call will be on hold, and you can establish a new call; to resume
the initial call, press .
Call Waiting
This feature will notify you of a new incoming call during an established call, and display the incoming call
information visually on the LCD screen and a call waiting tone will be heard. If this feature is disabled, the
new incoming call will be automatically rejected.
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To activate the call waiting feature, follow the next steps:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Access to Call settings and then to Call waiting sub-menu.
3. Select the account for which you want to enable the Call waiting feature, and then press left
softkey “Select” .
4. Choose between Enabled and Disabled options and press the softkey “Save”, a prompt message
will be displayed to confirm that the call waiting is enabled / disabled.
5. During an established call, press (dial key) to put first call on hold and answers second
incoming call. If no second incoming call, pressing will give the ability to initiate another call
while first one is on hold.
Note: You can switch between active/on-hold calls by pressing Options > Swap.
Do Not Disturb
You can activate or deactivate the DND mode for your accounts registered on the handset under the call
settings. If DND mode is activated for a specific line, all incoming calls will receive busy treatment
depending on your configuration (forward to voice mail, busy tone…)
To enable or disable the DND mode, follow the next steps
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Access Call settings and then to Do Not Disturb sub-menu.
3. Select the account on which you want to enable / disable the DND mode and then press “Select”
4. Choose between Enabled and Disabled options and press softkey “Save” to accept the changes,
a prompt message will be displayed to confirm that the DND is enabled / disabled.
You can check the line status if the DND mode is enabled on the base station.
Call forward
The call forward feature will allow you to forward all the incoming calls to the desired number. Three
possible call forward types are available on the DP720.
Forward all: All the incoming calls are immediately forwarded.
Busy Forward: Incoming calls are immediately forwarded if the line is busy.
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No Answer Forward: Incoming calls are forwarded if not answered after a period of time.
To enable the call forward, please refer to the following steps:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Access to Call settings and then to Call Forward sub-menu.
3. Select the account on which you want to enable/disable the call forward feature and press
“Select”.
4. Select the type of call forwarding and enter the number to forward the calls, and then press “Save”
(left softkey ) to apply the settings, a prompt message will be displayed to confirm that the
new settings have been saved successfully.
Call transfer
The DP720 supports the call transfer feature, you can transfer a call to another party using one of the
following ways:
Blind transfer: Transfer a call directly to another party without consulting
Attended transfer: Transfer a call with prior consulting.
Blind Transfer
1. Press the “Options” softkey (Left softkey ) during a call, and then select Transfer.
2. The initial call will be on hold, enter the number or select the handset you want to transfer the call to.
3. Press Dial key . The call is connected to the number or the handset you specified, and the
LCD screen prompts Call Transferred.
Attended Transfer
1. Press Left softkey “Options” during a call, and then select New call.
2. Choose the line and enter the number you want to transfer the call to, then press Dial key .
3. Once the second call is established, press left softkey “Option” and select Transfer.
Speed Dial
Speed dial allows users to perform single-digit dialing to predefined numbers. This feature is particularly
useful to speed up dialing the numbers that frequently used or hard to remember. A maximum of 8 speed
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dial numbers is allowed. For example, the digit key 2 is configured as a speed dial key and assigned the
number 2000, the phone will dial out the number 2000 directly when you long press digit key 2.
To assign the frequently used numbers from your shared contacts as speed dial keys:
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Access to Call settings and then to Speed Dial sub-menu.
3. Choose the digit keys (2-9) and press Assign to specify the number (from the shared directory) to
be as speed dial.
You can press Change or Delete softkeys to modify/delete a speed dial key
3-Way Conference
The DP720 supports creating a local conference with other parties (including handset starting the
conference).
To start a 3 Way conference, follow below steps:
1. Press the Dial key to place a call to the first party.
2. Press left softkey “Options” , then select Conference
3. Enter the number of the second party you want to add to the conference and press Dial Key .
To drop the conference call, press or “End” softkey.
Note: Conference can be bridged before third party answers.
Voice Mail
The voice mail feature ensures that you will never miss any important messages. It permits either to leave
voice mails to someone else or receive and listen to voice mails via the handset
Set Voice mail feature code
1. Press Menu (left softkey or the selection key ) to bring up operation menu.
2. Access to Voice Mail and then select Set Voice Mail sub menu.
3. Select the account and enter the voice mail code feature, then press “Save” softkey.
Play voice mail messages
1. Press “Menu” (left softkey or the selection key ) to bring up operation menu.
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2. Access to Voice Mail and then select Play Message sub menu.
3. Select the account to retrieve your voice messages saved on your voice mail.
Note: Users can access directly voicemail menu to play messages, by clicking on “View” (left softkey )
when the notification of a new voicemail pops up on the DP720’s LCD screen.
Call Features
The DP750/DP720 supports traditional and advanced telephony features including caller ID, caller ID with
caller Name, call forward and etc.
Table 10: Call Features
*30
Block Caller ID (for all subsequent calls)
Off hook the phone;
Dial *30.
*31
Send Caller ID (for all subsequent calls)
Off hook the phone;
Dial *31.
*50
Disable Call Waiting
Off hook the phone;
Dial *50.
*51
Enable Call Waiting
Off hook the phone;
Dial *51.
*67
Call with Caller ID Blocked (per call)
Off hook the phone;
Dial *67 and then enter the number to dial out.
*82
Call with Caller ID Enabled (per call)
Off hook the phone;
Dial *82 and then enter the number to dial out.
*70
Call with Call Waiting Disable (per Call)
Off hook the phone;
Dial *70 and then enter the number to dial out.
*71
Call with Call Waiting Enabled (per Call)
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Off hook the phone;
Dial *71 and then enter the number to dial out.
*72
Unconditional Call Forward. To set up unconditional call forward:
Off hook the phone;
Dial *72 and then enter the number to forward the call;
Press OK softkey or SEND key.
*73
Cancel Unconditional Call Forward. To cancel the unconditional call forward:
Off hook the phone;
Dial *73;
Hang up the call.
*90
Busy Call Forward. To set up busy call forward:
Off hook the phone;
Dial *90 and then enter the number to forward the call;
Press OK softkey or SEND key.
*91
Cancel Busy Call Forward. To cancel the busy call forward:
Off hook the phone;
Dial *91;
Hang up the call.
*92
Delayed Call Forward. To set up delayed call forward:
Off hook the phone;
Dial *92 and then enter the number to forward the call;
Press OK softkey or SEND key.
*93
Cancel Delayed Call Forward. To cancel the delayed call forward:
Off hook the phone;
Dial *93;
Hang up the call.
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RESTORE FACTORY DEFAULT SETTINGS
Warning:
Restoring the factory default settings will delete all configuration information on the phone. Please backup
or print all the settings before you restore to the factory default settings. Grandstream is not responsible for
restoring lost parameters and cannot connect your device to your VoIP service provider.
Please follow the instructions below to reset the phone:
Press MENU button to bring up the keypad configuration menu;
Select Settings and enter;
Select System Settings > Factory Reset;
A warning window will pop out to make sure a reset is requested and confirmed;
Press Yes softkey to confirm and the phone will reboot.
To cancel the Reset, press No softkey instead.
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EXPERIENCING DP750/DP720
Please visit our website: http://www.grandstream.com to receive the most up- to-date updates on
firmware releases, additional features, FAQs, documentation and news on new products.
We encourage you to browse our product related documentation, FAQs and User and Developer Forum
for answers to your general questions. If you have purchased our products through a Grandstream
Certified Partner or Reseller, please contact them directly for immediate support.
Our technical support staff is trained and ready to answer all of your questions. Contact a technical
support member or submit a trouble ticket online to receive in-depth support.
Thank you again for purchasing the Grandstream DP720 / DP750, it will be sure to bring convenience
and color to both your business and personal life.
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