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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 Admin GUI
Bria Desktop
Bria Mobile
Callcentric Android App
Callcentric iPhone App
Callcentric Softphone
Cisco ATA 186/188
Cisco SPA112/SPA122
CloudTC Glass 1000
CSipSimple
D-Link DVG-1402S
Ekiga
Elastix
Gigaset A510 IP
Gigaset C610A IP
Gigaset DX800A
Grandstream DP715/710
Grandstream GXP1450
Grandstream GXP1620
Grandstream GXP1625
Grandstream GXP2110
Grandstream GXP2160
Grandstream GXP2200
Grandstream GXV3140
Grandstream GXV3240
Grandstream GXV3275
Grandstream HandyTone 286
Grandstream HandyTone 486
Grandstream HandyTone 702
Grandstream Wave
HTek UC803
HTek UC926
Innomedia SIP MTA-6328
Jitsi
Linksys PAP2
Linksys SPA3102
LinPhone Desktop
LinPhone Mobile
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
UTStarcom F3000
Vodia PBX
VTech VCS754
VTech VSP600
VTech VSP725
VTech VSP726
VTech VSP735
VTech VSP736
X-Lite / X-Pro / eyeBeam
Yealink T32G
Yealink W52P
Yealink T42G
Yealink T46G
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
snom 820

GENERAL INFORMATION
snom 820Snom's 8xx series of IP phones depart from the standard matte black finish and gives the user a choice of a matte white as a color option. The devices allow the ability to support upwards of 12 different SIP accounts and features a small color screen which gives the phone an elegant and professional look. This product is reliable and a convenient IP phone that works well with the Callcentric service.


RESOURCES
Websites:
snom

Help / Support:
snom 820 product manual
snom 820 Wiki
snom 820 firmware updates


Configuring the snom 820
These instructions are based on using the snom 820 software version 8.2.11 in its factory default configuration which is to obtain a dynamic IP address automatically from your router using DHCP, which is how most people have their home routers configured. For information on configuring your snom 820 with a static IP address, please refer to the snom 820 user manual.

User's intending to use version 8.4 and greater of the snom 820 firmware will not be able use tftp to upgrade and will notice some configuration differences. Specifically configuring your codecs will require using comma separated values.

We recommend that you read each step through in its entirety before performing the action indicated in the step.
STEP 1 Connect your router with the supplied Ethernet network cable to the snom 820's "Net" port. Finally plug the supplied power cable into the snom 820.

Wait 60 seconds after plugging the snom 820's power adapter for your phone to boot up.

Once it's booted up you will be presented Welcome screen. We will need to acquire the IP address in order to make configuration a simpler process. To do this press the Menu button on the phone as indicated in the picture below:



From there, select option 5 Maintenance followed by option 1 System Info. This screen should display the current IP address of your snom 820:







STEP 2 To login to your phone open a web browser such as Internet Explorer, or Firefox and enter the IP address you've saw on the phone's interface (I.E. where you would normally enter www.yahoo.com).

Please note, the snom 820 by default should not have a password assigned to it, so you should now see a page that looks like this:



STEP 3 Now we'll begin configuring your accounts. Click on the Identity 1 link, or the identity you wish to configure, as indicated in the picture below:



Under the Login configuration page, please use the following settings and click on the Apply button to save your changes:

SettingValue
Display Name:1777MYCCID, where 1777MYCCID is the 1777 number assigned to you by Callcentric
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:callcentric.com
Outbound Proxy:callcentric.com
Authentication Username: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.
Mailbox:*123
Display text for idle screen:1777MYCCID, where 1777MYCCID is the 1777 number assigned to you by Callcentric

Your configuration should look similar to the screenshot below:

STEP 4 We will now configure audio settings. To do this click on RTP and use the following options then click on the Apply button to save your changes:

SettingValue
Codec 1:g729A
Codec 2 - 7:G.711u
Packet Size:20ms
Full SDP Answer:On
Symmetrical RTP:Off
RTP Encryption:Off

Your configuration should look similar to the one shown in the picture below:



We will now check to make sure that everything went ok and that your device registered properly. To do this click on the System Information link on the left side, under the Status category. If you do not see an OK next to the account you configured then please double check your password and settings.



STEP 5 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).