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

Security considerations for Callcentric customers

3CX Version 6
3CX Version 12
3CX Version 12.5
3CX Version 15
3CX Version 16
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 17 CHAN_SIP (Vanilla)
Asterisk 17 PJSIP (Vanilla)
Asterisk Admin GUI v2.11
Asterisk Admin GUI v12
Asterisk Admin GUI v13
Asterisk Admin GUI v15
Bria Solo
Bria Desktop
Bria Mobile
Callcentric Android Click2Dial App
Callcentric iPhone Click2Dial App
Callcentric Softphone
Cisco ATA 186/188
Cisco SPA112/SPA122
CloudTC Glass 1000
D-Link DVG-1402S
Gigaset A510 IP
Gigaset C610A IP
Gigaset DX800A
Grandstream DP715/710
Grandstream DP750/720
Grandstream DP752/730/722
Grandstream GAC2500
Grandstream GRP2612
Grandstream GRP2613
Grandstream GRP2614
Grandstream GRP2615
Grandstream GXP1450
Grandstream GXP1620
Grandstream GXP1625
Grandstream GXP1630
Grandstream GXP1760
Grandstream GXP1782
Grandstream GXP2110
Grandstream GXP2130
Grandstream GXP2140
Grandstream GXP2160
Grandstream GXP2170
Grandstream GXP2200
Grandstream GXV3140
Grandstream GXV3240
Grandstream GXV3275
Grandstream GXV3370
Grandstream GXV3380
Grandstream HandyTone 286
Grandstream HandyTone 486
Grandstream HandyTone 702
Grandstream HandyTone HT802
Grandstream HandyTone HT814
Grandstream HandyTone HT818
Grandstream UCM6102
Grandstream UCM6204
Grandstream Wave Lite
Grandstream WP820
Htek UC803
Htek UC860
Htek UC924
Htek UC926
Innomedia SIP MTA-6328
Innomedia BuddyTalk 110
Linksys PAP2
Linksys SPA3102
Linphone Desktop (v4.1.1)
Linphone Desktop (v3.4.3)
Linphone Mobile
Linphone Mobile (v.3.2.3)
NCH Express Talk
Nokia E90
pbxnsip Version 3
Polycom SoundPoint IP 601
Polycom SoundStation IP 5000
snom 1xx/2xx/3xx
snom 820
snom D717
snom D735
snom D785
snom M9
snom ONE
Telco AC-211
trixbox / Elastix / pbx-in-a-flash
Windows Messenger
Unidata ICW1000G
Uniden EXP1240
UTStarcom F3000
Vodia PBX (v5)
Vodia PBX (v64.0)
VTech VCS754
VTech VDP650
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 3.2
ZoIPer 5
ZoIPer Mobile
Zoom 5801
Zycoo CooVox U20
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

Twinkle is a GPL based softphone for the linux operating system. Twinkle supports many of the features provided by Callcentric except for call transfer. The software is very easy to use and yet provides a variety of configuration options that many power users would find necessary. Twinkle supports various codecs, of which we are only interested in PCMU/G.711u for use with Callcentric, as well as DTMF signaling under RFC2833.

DISCLAIMER: We do not provide installation instructions for this software and assume that you have already installed it on your OS. If you require further installing instructions please visit the Twinkle page. Additionally it should be noted that call transfer will not work with Twinkle and Callcentric since we do not support the REFER SIP transfer method.

Twinkle Home Page
Twinkle Download Page

Twinkle Support Page
Twinkle FAQ

Configuring Twinkle version 1.0.1
The configuration information below is based on Twinkle version 1.0.1 (May 2007) running on Ubuntu Feisty 7.04 (x86). A newer version of Twinkle, version 1.1, has also been tested and confirmed to work.

After properly installing Twinkle on your linux machine you will be able to add Callcentric as a SIP provider. You may follow the instructions below to configure Twinkle to work with the Callcentric service.

We recommend that you read each step through in its entirety before performing the action indicated in the step.
STEP 1a Open Twinkle. If this is your first time runnning Twinkle you will be prompted with a message stating Before you can use Twinkle you must create a user profile. Click OK to create a new profile. Once done move on to STEP 2.

STEP 1b If you have other profiles already configured you will need to click File from the menu at the top of the application. Then click Change user.... Once the profle screen is displayed please move on to STEP 2 below.

STEP 2 Click on the Wizard button in order to create your new Callcentric profile. In the next window enter callcentric as the profile name and click OK.

STEP 3 You will then be given the opportunity to configure your account settings. Fill in the fields with the information below:

SIP Service Provider:Other
Your Name:Enter your name in this field
User name:This 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.
Authentication user name:This 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.
Password:Enter 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.
STUN server:Leave this field empty as you do not need a STUN server with the Callcentric service

STEP 4 If this is your first time configuring an account in Twinkle you will then be given the opportunity to adjust your system settings for this software. If this is your first time configuring Twinkle then you may configure your settings according to your desired preferences. Once done confirm your settings to save them.

STEP 5 This is the last configuration step of this guide. Here you will configure additional settings specific to your Callcentric account which will enable you to eliminate potential problems which may occur. To do this choose Edit from the application menu and perform the following. Once done click OK to save your changes.

Under RTP audio
Leave G.711 u-law as the only item under Active codecs

Set DTMF transpport to RFC 2833

Under SIP Protocol
Check MAX-Forwards header is mandatory
Uncheck Put registration expiry time in contact header
Uncheck Allow redirection


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
011 + the country code, area code, and number for calls worldwide (you may also use 00 instead of 011).