A method of providing an intra-company voice communication service has the general steps of providing a company with a plurality of remote geographic facilities linked by a data network, determining a call traffic pattern for each of the facilities by analyzing a call detail record for each facility,...http://www.google.es/patents/US7738400?utm_source=gb-gplus-sharePatente US7738400 - Method of providing intra-company two way voice communications over a data network
Method of providing intra-company two way voice communications over a data ...