Grandstream Networks DP720 Instruction Manual

Grandstream Networks, Inc.
DP750/DP720
Administration Guide

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DP750/DP720 Administration 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 guide 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 guide, could void your manufacturer warranty.
WARNING
Please do not use a different power adaptor with devices as it may cause damage to the products and void
the manufacturer warranty.

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DP750/DP720 Administration 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 Administration Guide
Table of Contents
DOCUMENT PURPOSE.................................................................................................9
CHANGE LOG..............................................................................................................10
Firmware Version 1.0.1.14.................................................................................................................10
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 ..........................................................................................................19
DP750 LED Patterns ..........................................................................................................................20
DP720 Handset Description..............................................................................................................20
DP720 Icons Description...................................................................................................................22
DP720 Handset Menu ........................................................................................................................24
CONFIGURATION GUIDE............................................................................................27
Obtain DP750 Base Station IP Address via paired DP720.............................................................27
Configuration via Web Browser .......................................................................................................28
Accessing the Web UI ..................................................................................................................28
Saving the Configuration Changes...............................................................................................28
Web UI Access Level Management..................................................................................................28
Changing User Level Password...................................................................................................29
Changing Admin Level Password.................................................................................................29
Changing HTTP Web Port............................................................................................................30

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DP750/DP720 Administration Guide
Web Configuration Definitions .........................................................................................................31
Status Page Definitions ................................................................................................................31
Profiles Page Definitions ..............................................................................................................34
DECT Page Definitions.................................................................................................................42
Settings Page Definitions .............................................................................................................43
Maintenance Page Definitions......................................................................................................45
Phonebook Page Definitions ........................................................................................................51
Change Base Station Admin PIN code ............................................................................................54
Register DP720 Handset to DP750 Base Station............................................................................54
Using DP720 with multiple DP750 base stations............................................................................56
Registering DP720 to an additional DP750 base station .............................................................56
Switching between different base stations ...................................................................................57
Unregister the DP720.........................................................................................................................58
Locating a DP720 Handset from DP750 Base station....................................................................58
Locate via DP750 Web UI ............................................................................................................58
Locate via DP750 Base station ....................................................................................................59
Register a SIP Account......................................................................................................................59
Register account via web user interface ......................................................................................59
Multiple Lines and Hunting Groups.................................................................................................61
Handset Line Settings...................................................................................................................61
Outgoing Default Line...................................................................................................................62
Hunting Groups.............................................................................................................................63
Configuration via Keypad .................................................................................................................66
Call Features ......................................................................................................................................67
DP750 Phonebook Management ......................................................................................................68
Private Phonebook .......................................................................................................................68
Global Phonebook........................................................................................................................71
Global Phonebook via XML..........................................................................................................71
Global Phonebook via LDAP........................................................................................................75
Rebooting from Remote Location....................................................................................................76
UPGRADING AND PROVISIONING ............................................................................77
Firmware Upgrade procedure...........................................................................................................77
Upgrading via Local TFTP/HTTP Servers........................................................................................78
Upgrading the handset DP720..........................................................................................................79
Configuration File Download............................................................................................................80
RESTORE FACTORY DEFAULT SETTINGS...............................................................81
Resetting the DP720 Handset...........................................................................................................81
Resetting the DP750 Base Station ...................................................................................................81
Via Reset Button...........................................................................................................................81

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DP750/DP720 Administration Guide
Via Web GUI.................................................................................................................................81
EXPERIENCING DP750...............................................................................................82

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DP750/DP720 Administration 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: Keypad Keys Description ..............................................................................................................21
Table 8: DP720 Icons Description...............................................................................................................22
Table 9: Status Page Definitions.................................................................................................................31
Table 10: Profiles Page Definitions .............................................................................................................34
Table 11: DECT Page Definitions................................................................................................................42
Table 12: Settings Page Definitions ............................................................................................................43
Table 13: Maintenance Page Definitions.....................................................................................................45
Table 14: Phonebook Page Definitions.......................................................................................................51
Table 15: Call Features...............................................................................................................................67

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DP750/DP720 Administration Guide
Table of Figures
Figure 1: DP750 Package Content .............................................................................................................17
Figure 2: DP720 Package Content .............................................................................................................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 charge station.......................................................................................................20
Figure 7: Handset Keys Description ...........................................................................................................21
Figure 8: DP720 Menu Structure ................................................................................................................24
Figure 9: User Level Password...................................................................................................................29
Figure 10: Admin Level Password ..............................................................................................................30
Figure 11: Web Access Port........................................................................................................................30
Figure 12: Admin PIN Code ........................................................................................................................54
Figure 13: DECT Status –Subscribe..........................................................................................................55
Figure 14: Registration Process..................................................................................................................56
Figure 15: Multiple Base Stations Registration...........................................................................................57
Figure 16: Switching Between Base Stations .............................................................................................57
Figure 17: Locate Handset via Web UI.......................................................................................................58
Figure 18: SIP Settings ...............................................................................................................................60
Figure 19: Sip Accounts Settings................................................................................................................60
Figure 20: Account Status...........................................................................................................................61
Figure 21: Handset Line Settings................................................................................................................62
Figure 22: Account Status –Line Status.....................................................................................................62
Figure 23: Hunting Group configuration......................................................................................................65
Figure 24: Hunting Group Status ................................................................................................................66
Figure 25: Private Phonebook Settings ......................................................................................................69
Figure 26: Handset Phonebook Settings ....................................................................................................70
Figure 27: Handset Phonebook Selection ..................................................................................................70
Figure 28: Global Phonebook XML Settings...............................................................................................71
Figure 29: Automatic XML Phonebook Download ......................................................................................72
Figure 30: Manual XML Phonebook Management .....................................................................................73
Figure 31: Global Phonebook LDAP Settings.............................................................................................75
Figure 32: Firmware Upgrade Page............................................................................................................78
Figure 33: Handset Firmware Upgrade.......................................................................................................79

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DP750/DP720 Administration Guide
DOCUMENT PURPOSE
This document describes how to configure DP750 Base Station features via DP720 Handset LCD menu
and Web GUI menu. The intended audiences of this document are VOIP administrators. To learn the basic
functions of DP750/DP720, please visit http://www.grandstream.com/support to download the latest
“DP750/DP720 User Guide”.
This guide covers following topics:
Product Overview
Getting Started
Configuration Guide
Upgrading and provisioning
Restore factory default settings.

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DP750/DP720 Administration Guide
CHANGE LOG
This section documents significant changes from previous versions of administration 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 1.0.1.14
Removed IVR (Interactive Voice Response).
Hide the content of “Advanced Settings” page when accessing the web GUI with normal user.
Added support of plus button ‘+’ when dialing.
Added voice mail, missed calls, headset icons.
Move Download Config options to Provisioning page
Added Dialing box controls for off-hook dialing on DECT > General Settings.
Changed EU standard ring tog tone same as US.
Added support for configurable system ring tone on Settings > Ring Tones.
Added web UI support for packet capture on Maintenance > Packet Capture.
Removed "Internal call" from audio ring tone menu.
Removed “Intercom” feature completely.
Firmware Version 1.0.1.4
Added dialing box controls for off-hook dialing on Profile > Call Settings.
Added link to embedded admin guide on web UI support page.
Added Reset handset name to default if handset is unsubscribed.
Added Implement DHCPv4 Option 120 on Maintenance > Provisioning.
Move Network Settings and Phonebook tabs.
Added handset version (firmware) on Status > System Status.
Web UI Status Enhancements.
Changed location of handset firmware upload/delete.
Improved web UI Account Status page.
Added processing of DHCP option 160 by DHCP client.
Added support to receive a handset proprietary message when handset power off.
Added "Off-Hook Auto-Dial " option on DECT -> General Settings.
Added support for Japan region.
Added support to upload handset firmware from web UI.
Added delete button for uploaded handset firmware via web UI.
Firmware Version 1.0.0.16
This is the initial version for DP750/DP720.

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DP750/DP720 Administration 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 Administration Guide
WELCOME
Thank you for purchasing Grandstream DP750 DECT IP Base Station. DP750 is the next generation of
versatile, affordable, high quality and simple to use DECT IP Base Station for small-to-medium businesses
(SMBs) and residential users. This Linux-based model allows up to 5 registered DECT handsets and up to
4 concurrent calls simultaneously. It features 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 and voice-over-IP for a minimum investment. DP750 is fully compliant with SIP/DECT standard
and field proven for flexible deployment.

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DP750/DP720 Administration 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.
27 languages embedded.
10 accounts.
10 lines.
5 ring modes.

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DP750/DP720 Administration 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, 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
Arabic, Chinese Simple, Chinese Tradition, Croatian, Czech, Danish, Dutch, English,
Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean,
Norwegian, Polish, Portuguese, Romanian, Russian, Slovenian, Spanish, Swedish, 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)
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.

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DP750/DP720 Administration Guide
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
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

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DP750/DP720 Administration Guide
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
Arabic, Chinese Simple, Chinese Tradition, Croatian, Czech, Danish, Dutch, English,
Estonian, Finnish, French, German, Greek, Hebrew, Hungarian, Italian, Japanese, Korean,
Norwegian, Polish, Portuguese, Romanian, Russian, Slovenian, Spanish, Swedish, 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 Administration 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 2: DP720 Package Content
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 Rechargeable batteries
1 Quick Start Guide
1 Base unit
1 Universal power supply 5V
1 Ethernet cable
1 Quick Start Guide
1 GPL Statement
Figure 1: DP750 Package Content

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DP750/DP720 Administration 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 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 your PoE switch/hub.
Figure 4: Connecting the Base station

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DP750/DP720 Administration 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-circuit,
which lead to damage your batteries and/or the handset itself. Do not use damaged batteries which can
increase the risk of serious harm.
Setting up the Charge Station
Please refer to the following steps for setting up the charge station and charging the handset:

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DP750/DP720 Administration Guide
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 the charge station, place the handset in the charge station.
Figure 6: Setting up the charge station
DP750 LED Patterns
The DP750 has 5 LED lights on it. Please refer to the following table for the meaning of each light.
Table 6: DP750 LED Patterns
DP720 Handset Description
The LCD screen and the Keypad are the main hardware components of the DP720.
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; when holding the Radio button,
blinking indicates a pairing attempt.