gtpn1m0b | Non-SNA Data Communications Reference |
The following factors must be agreed by link between the parties concerned at each end.
SYN SYN DLE TSI MBI LCI - ETB BCC
The Additional Characteristics Indicator (ACI) is not a mandatory component of the message control character set, and its inclusion or omission from the message envelope must be agreed by link between the parties at each end.
On connections to a High Level Network (e.g., SITA), two additional control fields are required following the LCI: