Taki
From VoIP.ms Wiki
Configuration Details for the Taki Softphone on a Blackberry
Step 1: Start the Taki App
Step 2: Once the Taki App has started, "Accounts" tab will be open to start the configuration.
Step 3: Fill in the information according to your account.
Your Name: John Smith (Your CallerID Name or Description)
Username: Your Main account or sub account username (six digit number) E.G 123456 / 123456_XX (the underscore has to be used for sub-accounts)
Password: The password you set for the account / sub account
Domain: One of VoIP.ms multiple servers, you can choose the one closest to your location
Step 4: Click on "Save" button.
Step 5: Your softphone should be ready to make calls.
Additional Information:
Click on "Dial" tab. Type your destination phone number and press "Call".
Use "Contacts" tab to call contacts from your address book.