JREAP The Joint Range Extension Applications Protocol ( " JREAP " ) extends the range of Tactical Data Link by permitting tactical data messages to be transmitted over long - distance networks , e . g . satellite links . JREAP is documented in MIL - STD - 3011 and STANAG 5518 , " Interoperability Standard for the Joint Range Extension Applications Protocol ( JREAP ) . " Purpose . JREAP was developed due to the need to communicate data over long distances without degradation to the message format or content . JREAP takes the message from the format it was originally formatted in and changes the protocol so that the message can be transmitted over Beyond Line - of Sight media JREAP is the protocol and message structure for the transmission and reception of pre - formatted messages over communications media other than those for which these messages were designed . JREAP provides a foundation for Joint Range Extension ( JRE ) of Link 16 and other tactical data links to overcome the line - of - sight limitations of radio terminals such as the Joint Tactical Information Distribution System ( JTIDS ) and Multifunctional Information Distribution System ( MIDS ) , and extends coverage of these data links through the use of long - haul media . JREAP A . JREAP A uses an Announced Token Passing protocol for half - duplex communications . This protocol may be used when several terminals share the same JRE media and take turns transmitting or in a broadcast situation when one transmits and the rest receive . It is targeted to data rates down to 2400 bits per second ( bps ) on a serial data interface with a TSEC / KG - 84A / KIV - 7 or a compatible encryption device used for data security . It is designed for use with media such as : 25 - kHz UHF TDMA / DAMA SATCOM , EHF Low Data Rate ( LDR ) Forced Mode Network Operations and 5 and 25 kHz UHF non - DAMA SATCOM . JREAP B . JREAP B is a synchronous or asynchronous point - to - point mode of the JREAP . This mode is similar in design to the Half - Duplex Announced Token Passing protocol used by JREAP A . This mode can be used with SHF and EHF LDR point - to - point mode synchronous connections , STU - III operations via phone lines and other point - to - point media connections . This JREAP application presumes full - duplex data - transparent communication media . JREAP C . JREAP C makes use of the Internet Protocol ( IP ) in conjunction with either the User Datagram Protocol ( UDP ) or Transmission Control Protocol ( TCP ) . The IP suite is a standard set of protocols that is deployed worldwide in commercial as well as military networks . By using JREAP encapsulation over IP , JRE can be performed over IP - based networks that meet operational requirements for security , speed of service and so on . MIL - STD - 6016 . The Military Standard 6016 document provides the detailed definitions for the Link - 16 messaging protocol . The current revision , as of February 2012 , is MIL - STD - 6016D . Most applications still use its predecessor , MIL - STD - 6016C . MIL - STD - 3011 coupled with MIL - STD - 6016C or MIL - STD - 6016D can be used in to provide a complete capability for communication of Link - 16 data over JREAP C . Summary . JREAP is used for the exchange of pre - formatted messages over other communications media . JREAP provides a foundation for JRE of Link 16 JREAP A is an encrypted satellite link using a serial data interface to exchange information in a half - duplex or broadcast mode . JREAP B is a secure synchronous or asynchronous point - to - point serial data interface used to exchange information in a full - duplex data - transparent mode . JREAP C is a secure data link interface that encapsulates JREAP over IP using IP - based networks for the exchange of information .