We just started supporting our new client an on-line VoIP and Telephone Cards Service Provider: www.minutoscolombia.com.
Minutos Colombia offers international prepaid calling cards and VoIP termination Services. Customers can download and use software for Windows computers & mobile devices. They also support SIP, customers can use their SIP devices to make cheap calls over the internet. This Internet Telephony Service Provider serves the Spanish, Latin American market and their website is in Spanish.