A method to be implemented in an integrated services network, such as the well known ISDN, GSM or CMS88 type networks, takes advantage of short message service technology to enable communication between terminal equipment units, i.e., between people using the network. This method makes possible (a) the...http://www.google.de/patents/US5351235?utm_source=gb-gplus-sharePatent US5351235 - Method for relaying information in an integrated services network
