Zoiper

1. Download and install the soft phone

Click http://www.zoiper.com/softphone/ and select the version you want (free or biz).

2. Configure the phone

Right click on the screen of virtual phone and select “Options”.

In the menu on the left select SIP accounts -> Add a new SIP account
Enter a name for the account you want to create.

After you've created a new SIP account, type the details for the terminal you want to setup:

Domain: sip.voicemailtel.net
Username: provided by Voicemailtel
Password: provided by Voicemailtel
Caller ID Name: your name

3. Click "OK" and to save settings.