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Supported devices
ATA Adaptors
IP Phones
Cordless DECT IP Phones
IP Conference Phones
IP PBX Software/Hardware
Desktop Softphones
Mobile Softphones

Security considerations for Callcentric customers

3CX
3CX Version 6
3CX Version 12
3CX Version 12.5
3CX Version 15
3CXPhone (for Windows)
3CXPhone (Mobile)
Aastra 6753i
Acrobits/Groundwire for iPhone
Android SIP Client
Apivio MWP1100
Asterisk 1.4 and 1.2
Asterisk 1.6
Asterisk 1.6.2, 1.8, and 10
Asterisk 14
Asterisk Admin GUI v2.11
Asterisk Admin GUI v12
Asterisk Admin GUI v13
Bria Desktop
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Callcentric Android App
Callcentric iPhone App
Callcentric Softphone
Cisco ATA 186/188
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CloudTC Glass 1000
CSipSimple
D-Link DVG-1402S
Ekiga
Elastix
Gigaset A510 IP
Gigaset C610A IP
Gigaset DX800A
Grandstream DP715/710
Grandstream DP750/720
Grandstream GXP1450
Grandstream GXP1620
Grandstream GXP1625
Grandstream GXP1760
Grandstream GXP1782
Grandstream GXP2110
Grandstream GXP2130
Grandstream GXP2140
Grandstream GXP2160
Grandstream GXP2200
Grandstream GXV3140
Grandstream GXV3240
Grandstream GXV3275
Grandstream HandyTone 286
Grandstream HandyTone 486
Grandstream HandyTone 702
Grandstream Wave
Htek UC803
Htek UC860
Htek UC924
Htek UC926
Innomedia SIP MTA-6328
Jitsi
Linksys PAP2
Linksys SPA3102
Linphone Desktop
Linphone Mobile
Linphone Mobile (v.3.2.3)
NCH Axon PBX
NCH Express Talk
Nokia E90
Obihai
OBi100/110
OBi200/202
OBi1032
pbx-in-a-flash
pbxnsip
pbxnsip Version 3
PhonerLite
Polycom SoundPoint IP 601
Polycom SoundStation IP 5000
snom 1xx/2xx/3xx
snom 820
snom M9
snom ONE
SFLphone
SJphone
Telco AC-211
trixbox / Elastix / pbx-in-a-flash
Twinkle
Windows Messenger
Unidata ICW1000G
Uniden EXP1240
UTStarcom F3000
Vodia PBX
VTech VCS754
VTech VSP600
VTech VSP725
VTech VSP726
VTech VSP735
VTech VSP736
X-Lite / X-Pro / eyeBeam
Yealink T32G
Yealink T41S
Yealink T42G
Yealink T42S
Yealink T46G
Yealink T46S
Yealink T48S
Yealink W52P
Yeastar MyPBX U100
ZoIPer
ZoIPer 3.2
ZoIPer Mobile
Zoom 5801
Other Linksys/Sipura products
Generic / Other Device

DID-Based Routing with Asterisk
DID-Based Routing with trixbox / Asterisk Admin GUI / Elastix / PBX-in-a-Flash
Grandstream DP750/720

GENERAL INFORMATION
Grandstream's DP750/DP720 is a reliable inexpensive yet powerful DECT cordless IP Phone that works with the Callcentric service when placed behind your broadband internet router. You can add upwards of to 5 cordless handsets (DP720) paired up to a single base station (DP750).


RESOURCES
Websites
Grandstream Homepage
Grandstream DP720 Product Page
Grandstream DP750 Product Page

Help/Support
DP750/720 Product Manual


Configuring the DP750/720
This setup guide is for the Grandstream DP750 and is based on firmware revision 1.0.1.20. If you are running a different firmware version some of the menus/settings may be different. These instructions are also based on using the DP750 in its factory default configuration, which obtains a dynamic IP address automatically from your router using DHCP. For information on configuring your DP750 with a Static IP Address, please refer to the DP750 user manual.

In this guide we will go through configuring the DP750 in order to register to the Callcentric servers so that you will be able to place and receive calls using your Callcentric account. Before moving forward please ensure that you have properly added the device to your network by connecting it to your router or gateway.

We recommend that you read each step through in its entirety before performing the action(s) indicated within the step.

Note: Although this device supports many advanced features/options; this guide will only detail the specific settings which are required to establish basic connectivity between your DP750 and our service. If you need additional assistance with any specific issue please let us know.
Step 1 Pairing to the base station
By default, your DP720 (the handset) is not paired with the DP750 (the base station). Following the instructions below will allow you to pair at least one handset to your base station. If your handset is already paired with your base station, you may proceed to step 2 of our setup guide.

  • Assuming that the base station is fully powered and your handset is fully charged; press/hold the radio/page button on the base station (indicated by the icon ) for 7 seconds

  • Next, while the radio icon on the base station is blinking go to the handset itself and press menu and from there navigate to Settings >> Registration >> Register

  • From the Subscribe Base selection screen, select the base station you would like to associate with, and select Subscribe

Once completed, if your handset has successfully paired with the base station, you should receive a Handset Subscribed notification on the screen.

Note If you do run into any issues pairing your handset to your base station, please refer to the DP750 user manual for additional information.

Step 2 Logging into your base station
Before you can log into your base station's web configurations, you will need to retrieve the IP Address of your base station. To do so, from your handset, press the menu key and navigate to Status >> IP Address.

Next, open a web browser on your computer (Chrome, Firefox, Internet Explorer, Safari, etc) and enter the IP Address that is displayed on your phones LCD screen into the address bar. You should be presented with a login screen similar to the screenshot below:



Login to the DP750's administrative interface by using the default username (admin) and default password (admin).

Step 3 Configuring your Callcentric account
From the top menu bar, locate the sub menu option Profiles >> Profile 1 >> General Settings; as indicated by the screenshot below:



You should now be in the General Settings configuration page. Please use the settings detailed in the screen captures below. After you have finished entering these settings, click on the Save and Apply button to apply/save your settings:



SettingValue
Profile ActiveYes
SIP Servercallcentric.com
Prefer Primary SIP ServerYes
Outbound Proxycallcentric.com
Voice Mail Access Number*123


Next, click on Network Settings which is located on the side menu bar. On this page, please use the settings detailed in the screen captures below. After you have finished entering these settings, click on the Save and Apply button to apply/save your settings:



SettingValue
DNS ModeSRV
NAT Traversalkeep-alive


Proceed to the SIP Settings >> Basic Settings menu option on the side menu bar. From here, set the following options detailed in the screen capture below. After you have finished entering these settings, click on the Save and Apply button to apply/save your settings:



SettingValue
Unregister on RebootYes
Remove OBP from RouteYes


Next, click on Audio Settings which is located on the side menu bar. On this page, please use the settings detailed in the screen captures below. After you have finished entering these settings, click on the Save and Apply button to apply/save your settings:



SettingValue
Preferred DTMF Method1 - RFC2833
2-3 In-Audio
Preferred Vocoder1 - PCMU
2 - G729
3-8 PCMU


Next, click on Call Settings which is located on the side menu bar. On this page, please use the settings detailed in the screen captures below. After you have finished entering these settings, click on the Save and Apply button to apply/save your settings:



SettingValue
Dialplan{[x*]+}
Enable Call FeaturesNo


From the top menu bar, locate the sub menu option DECT >> SIP Account Settings; as indicated by the screenshot below:



On this page, for Account 1, specify the following parameters as indicated below. Once completed, click on the Save and Apply button to save your changes:



SettingValue
SIP User IDThis is either the default extension 1777MYCCID OR 1777MYCCIDEXT, where 1777MYCCID is the 1777 number assigned to you by Callcentric and EXT is the three digit extension you are trying to register this UA to.

For example: 17770001234101 would register to extension 101 on account 17770001234.

You cannot register to your account using only the extension number.
Authenticate IDThis is either the default extension 1777MYCCID OR 1777MYCCIDEXT, where 1777MYCCID is the 1777 number assigned to you by Callcentric and EXT is the three digit extension you are trying to register this UA to.

For example: 17770001234101 would register to extension 101 on account 17770001234.

You cannot register to your account using only the extension number.
PasswordEnter your extension SIP Password here. Your extension SIP password is the password you created for the extension you are trying to use. You may edit the SIP password you wish to use in by logging into your My Callcentric account and clicking on the Extension menu link and then modifying the appropriate extension.
NameYou may specify any name on this field
ActiveYes


Step 4 That's it! You can now make a phone call.
You can make a test call to 17771234567, or if you are signed up for one of Callcentric's rate plans you can place a call to a traditional landline or mobile phone by dialing either:
1 + the area code and number for calls to the US
Or
011 + the country code, area code, and number for calls worldwide (you may also use 00 instead of 011).

To test inbound calls from Callcentric to your DP750/DP720 installation, follow the directions listed in this FAQ.