Once Ekiga is configured appropriately, making a call is straightforward.
Start Ekiga using the menu or the command line.
Enter the SIP address of the other party at the prompt. The address should look like
sip:username@domainname or
username@hostname for direct local calls or like
username@sipserver or
userid@sipserver for proxied calls or calls using
the service of a SIP provider. If you have a SIP provider that
accepts real phone calls, you may just enter the number like
sip:<call number>
Click or type Ctrl-O and wait for the other party to pick up the phone.
Once you are done or wish to end the call, click or type Ctrl-D.
If you need to tweak the sound parameters during a call, click ++ to show four tabs holding more options. The second one holds the options for and . Use the sliders to adjust both volumes to fit your needs.