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 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 Admin GUI v2.11
Asterisk Admin GUI v12
Asterisk Admin GUI v13
Bria Desktop
Bria Mobile
Callcentric Android App
Callcentric iPhone 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 GAC2500
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 HandyTone 286
Grandstream HandyTone 486
Grandstream HandyTone 702
Grandstream HandyTone HT802
Grandstream HandyTone HT814
Grandstream HandyTone HT818
Grandstream UCM6102
Grandstream UCM6204
Grandstream Wave
Grandstream WP820
Htek UC803
Htek UC860
Htek UC924
Htek UC926
Innomedia SIP MTA-6328
Linksys PAP2
Linksys SPA3102
Linphone Desktop
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 M9
snom ONE
Telco AC-211
trixbox / Elastix / pbx-in-a-flash
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 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
snom 1xx/2xx/3xx

Information on Snom's VoIP telephone's is listed below


snom 1xx firmware updates
snom 2xx firmware updates
snom 305 firmware updates
snom 315 firmware updates
snom 345 firmware updates
snom 375 firmware updates

The instructions listed below are based on firmware release version 3.56m for the Snom 1xx/2xx series. If you are running a different software version or phone some menus and settings may be different. Some menus and settings may not apply to the specific Snom phone model you have.

These instructions are based on using the Snom's factory default configuration which is to obtain a dynamic IP address automatically from your router using DHCP, which is how most people have their routers configured. For information on configuring your Snom phone with a static IP address, please refer to the user manuals.

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


Connect your Snom phone's network Ethernet port to your router or hub/switch. Plug the supplied power cable into the phone.

Wait until the phone finishes booting; at which point you should see the date and time on the display.


Push the LEFT arrow on your phone's keypad until you see the "Information" menu. Press the soft button below IPAdr which is shown on the display


You will now see on the display the IP address of the phone, as shown below. Write down the IP address shown on your phone.


Open a web browser on your computer such as Internet Explorer and enter the IP address shown on your phone in step 4 as the address (I.E. where you would normally enter

You should now see a page that looks like the image below. Click on the Line 1 option under "Setup" in the menu on the left side of the page.


On the "Line 1" page configure the settings at the top of the page as follows. See this picture for all other settings on the page.

Menu ItemSetting
Displayname:Enter your name in this field
Account: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.
Registrar:Enter in this field
Outbound Proxy:Enter in this field

After you have configured all settings on the "Line 1" page. Click the Save button at the bottom of the page.

Wait 20 seconds before continuing.

At this point your Snom phone should be registered with Callcentric's servers. You can verify your registration by clicking on the Line 1 menu item until you see "Ok" written next to "Status:" as shown below:

If you see "Ok" next to "Status:" continue to the next step.

If you do not see the Status as "Ok" wait 60 seconds and click the Line 1 menu again. If at this point you still do not see "Ok" next to status verify all settings entered in step 6 are correct, and that your internet connection is currently up and running. If after verifying all settings and your internet connection you are still having problems registering your phone, you should reset your Snom phone to its factory default configuration by going to the Advanced menu and clicking the Reset button on the bottom of the page; at this point you will need to start the configuration of your phone over from Step 1.

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).