Improving performance and reliability of an IMS network by co-locating IMS servers. - Thierry Bessis (Bell Labs Tech. J., 2006)

Improving the DNS mechanism in a data center intranet. - Thierry Bessis (Bell Labs Tech. J., 2007)

Open IMS. - Thierry Bessis (Bell Labs Tech. J., 2008)

Session Initiation Protocol firewall for the IP Multimedia Subsystem core. - Thierry Bessis; Vijay K. Gurbani; Ashwin Rana (Bell Labs Tech. J., 2011)