1. Install SFLphone.
2. Launch the SFLphone and click "Edit".

3. Click "Add" to add an account.

4. Enter the following and click "Apply".
Nickname: Your sip number (for example 111111) from your personal account
Server name or IP address: sip.zadarma.com
Username: Your sip number (for example 111111) from your personal account
Password: your sip number password from your personal account

Nickname: Your PBX extension number (for example 1234-100) from your personal account
Server name or IP address: pbx.zadarma.com
Username: Your PBX extension number (for example 1234-100) from yours personal account
Password: Your PBX extension number password from your personal account

5. Go to "Audio", select "DTMF mode = SIP" and click "Apply".

6. The account is now registered and you can make calls.
