A system facilitates two-way messaging in a network that includes at least one paging device. The system includes a paging service provider and a server. The paging device generates a message intended for a called party and transmits the message to the paging service provider. The paging service provider...http://www.google.ca/patents/US6690262?utm_source=gb-gplus-sharePatent US6690262 - Systems and methods for two-way messaging using a pager
