A very reliable source just reporting the Vonage is going to start offering branded calling cards which will offer about 200 free minutes and direct billing to subscriber phone numbers. They are aiming at business travellers who want to use their “home” phone number on the road and will include a unique key-generating system for security.

Vonage is the most visible VoIP carrier out there and this move, if true, will offer some amazing freedom to an already powerful service. I’ve used Vonage extensively and being able to call from any phone — and not just from any Internet cafe using the V-Phone — sounds like a real treat.

As usual, take this with a grain of salt but our source was fairly adamant.