Star2Billing provides a full featured Softswitch combined with telecom billing services for any telco that wishes to deploy its own switch to provide either traditional PSTN or leading edge Voice over IP solutions. Star2Billing is the commercial arm of A2Billing is possibly the most popular open source Telecom Switch and Billing platform available today. Star2Billing sets out to provide Service, Support, Maintenance, Consultancy and Hardware for A2Billing to give our customers confidence in deploying Commercial Telephony with Open Source Solutions.