1645: Simple Network Paging Protocol - Version 2.

This RFC suggests a simple way for delivering both alphanumeric and numeric pages (one-way) to radio paging terminals. Gateways supporting this protocol, as well as SMTP, have been in use for several months for nationwide paging and messaging. In addition, email filters and SNPP client software for Unix and Windows are available at no cost. Please contact the author for more information.