Nokia hidden SIP Settings for VoIP over 3G and codecs

Although Nokia phones are able to connect VoIP services over 3G connections and has codec settings for better voice quality these settings are hidden by default.

If you want a better voice quality or want to make calls over 3G connection Nokia has a new application to configure the preferred codec, NAT settings, STUN, VoIP over 3G, etc.

This application can be used to configure VoIP settings on the terminal UI. You can create new VoIP profiles and modify the existing ones, and create and modify VoIP parameters and NAT/Firewall traversal settings and that are normally not visible on the device UI, such as codec settings and SIP domain-specific NAT/FW settings. It is also possible to save all the VoIP profile settings to a text file. It also enables VoIP over WCDMA which means VoIP over 3G connection.

Here you can find detailed configuration guide for hidden Nokia SIP settings and how to make calls over 3G and changing codecs for better voice quality.


Using your PC download free application from here or check Nokia web site for latest version.

Extract and install SIS file using Nokia PC Suite software on your PC.


Once installation is complete go to Applications and click on "SIP VoIP Settings" application. Choose VoIP services/VoIPVoIP (or the name of your VoIPVoIP account Internet profile.)

Click on "Profile Settings" and find "Allow VoIP over WCDMA" option and change it to "ON" This change allows VoIP over 3G connection on Nokia phones.


For better voice quality over 3G go to Codecs and delete all codecs except G729. There should be only G729 codec left under codecs settings

Close the application and once your device is registered you can start making calls over 3G.

Make Calls!

NOTE: In order to use your VoIP account to make a call enter the number you want to call and than click on "options" and choose "Internet Call"

To dial any phone number that is part of the NANP (North American Numbering Plan), you must dial:

1 + Area Code + Phone number

To dial any phone number that is outside of the NANP (North American Numbering Plan), you must dial:

Country Code + City Code + Phone number

For example if you want to call Brazil (country code 55) phone number in Rio de Janeiro (city code 21) you must dial 5521 and phone number. + sign can also be used and number can be dialed as +5521xxxxxxx

If you want to use your saved contact numbers save the numbers with + sign as well.

Problems? Please click here for our voip troubleshooter.