External Machine Interface (protocol) (EMI) A protocol primarily used to connect to short message service centres for mobile telephones. EMI is an extension to Universal Computer Protocol (UCP). EMI was was developed by CMG, now a part of LogicaCMG, the current SMSC market leader.
Each byte of the message is encoded as two hexadecimal characters using an encoding not quite like ASCII. EMI specification Last updated: 2007-09-10
