Nokia N900 - How do I make an internet call on my Nokia N900 Maemo device?

Internet calls are based on the voice over internet protocol (VoIP) that allows you to make and receive calls over the internet. To use this feature, you must have an active network connection (WLAN or packet data) and a registered internet call account with an internet call service provider, and your availability status must be On to allow you to receive calls. Internet call services may not support emergency calls. Contact your internet call service provider for further details.

1. Tap the Application menu icon and select Phone.2. Connect your device to an internet connection, and select a VoIP service account. Your availability status changes to Online.3. Choose Select contact and a contact4. To end the call, select End.

You can also make an internet call from the Contacts application.