The present invention relates to the operation of interconnected switches or call centers. In particular, the present invention allows communication bandwidth to be conserved, by providing audible feedback from a switch that is relatively local to a caller, even though a call center that is remote to...http://www.google.de/patents/US6999579?utm_source=gb-gplus-sharePatent US6999579 - Method and apparatus for the efficient utilization of trunk bandwidth in a global enterprise
