In a nutshell, HERMES helps medical professionals communicate with each other.

Slightly more detail:

There are three components, 1) phone based messaging, 2) web-based messaging 3) A database. Phone generated messages include a numeric page and priority status. Web-based messages can include a message, return number, sender information and priority status. Messages go to the database (which stores the schedule information and availability status) and are forwarded to the appropriate medical professional. Messages appear as text messages on mobile phones.

Sorry, big nutshell.