If you haven't installed ZoIPer Softphone on your computer, use the following link: ZoIPer Installer
Step 1
Start ZoIPerStep 2
Press right mouse button on Zoiper window, then choose English language, if needed.Step 3
Press Options buttonStep 4
Press Add new SIP accountStep 5
Enter the name of SIP-account in the Add new SIP account window (mixnet, for example)and press ОК.
Step 6
Make the following configurations:Step 7
Make a-law the only selected codec, with the help of “arrow”-buttons(as shown on the picture) and press OK
Step 8
Ensure that ZoIPer successfully registered on Mixnet server.You should see mixnet(Registered) (SIP)