What is the lower layer protocol (LLP) used with HL7?

Owned by Eliot Muir
Last updated: Nov 10, 2021
1 min read

This is a really simple framing TCP/IP protocol. Each HL7 message is preceded with some special characters which are:

  • \x0B

and is followed by these special characters:

  • \x1C\x0D

These are expressed in hexadecimal.

So:

0x0B … MSH…..<hl7 message> … \0x1C\0x0D