Sigma Software Solutions launched a <A HREF="http://www.sigmasoft.ca/">dual customer care and billing solution</A> that enables VoIP wholesalers to set up operations with their reseller partners. The twin package of Sigma OmniCare for VoIP Wholesalers and OmniCare for VoIP Resellers provides an end-to-end customer, order and revenue management solution on the same platform across multiple VoIP service partners.