I have included the setup configuration I used to successfully get it working, details below.
First step is to go to your softphone's settings.
- Click on SIP account's (or add SIP account, your device will have a similar option)
- Enter your display name (usually your phone number without leading 0 e.g. 79857XXX
- Enter your username (usually same as display name)
- Enter password
- Enter Authorized username
- Enter Domain
- Tick Register with domain
- Untick use as outbound proxy
Your softphone should now be setup to use VFX