The present invention is directed to a session initiation protocol (SIP) infrastructure containing various user devices and the use of this infrastructure to conduct media exchange sessions among the various user devices. Included in the user devices are wearable devices, for example pendants and wrist...http://www.google.ca/patents/US20060026288?utm_source=gb-gplus-sharePatent US20060026288 - Method and apparatus for integrating wearable devices within a SIP infrastructure
