The LINK Protocol

The LINK Protocol specification (by AAH Pharmaceuticals) comprises both the LINK High Level Protocol (for the Transport Layer) and the LINK Low Level Protocol (for the Data Link Layer). These specifications are available from AAH's Customer IT Services Manager.

The LINK Low Level protocol is closely modelled on the Binary Synchronous Communications protocol. Error detection is a combination of parity checking on each byte and longitudinal parity checking on each frame.

Process IdVariant
V2The caller gave an Access Code with the correct password.
VLThe caller gave a 13 character LINK Account Code.

Orders using this variant will not be accepted if the Telecom Options dialog Security field is set to P Require passwords

When using the LINK protocols to communicate with GO.EXE:

The Protocol Handbook