Virtual circuits are dynamically established in a telecommunications network. A cache duration is adaptively determined based on at least one characteristic of the telecommunications network. A virtual circuit is established for a connection between a source and a destination. The virtual circuit is...http://www.google.de/patents/US20070230340?utm_source=gb-gplus-sharePatent US20070230340 - SYSTEM AND METHOD FOR MEASUREMENT-BASED ADAPTIVE CACHING OF VIRTUAL CONNECTIONS