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NDA-30115 Revision 1.0 Page 89
Property Management System - Communication Interface Glossary
Chapter 6 Glossary
BCC Block Check Code. Computed by an exclusive OR of the
message from the SA field to the ETX character, inclusive.
This is used to assist in error control.
EI Entry Index. Always ‘L’ for the PMS interface.
ETX End of Text. Special control character used to denote the end
of a message block. Always 03H.
FC Function Code. Identifies a specific message within a feature
code. The combination of feature code and function code
uniquely identifies each message. See Appendix C for a list of
codes.
FTC Feature Code. Identifies a set of related messages. See
Appendix B for a list of codes.
MSC Message Counter. Specifies the length of the significant data
in a message. The count begins with the FTC field and ends at
the last character of the body (prior to the ETX character). The
count includes the MSC field, which is always two characters.
MWL Message Waiting Lamp.
NEAX The NEAX2400 IMS system. It is a private branch exchange,
which is a digital voice and data communication system for
the office.
PMS Property Management System. A set of software and
hardware which manages a hotel’s assets.
SA System Address. Always ‘1’ for the PMS interface.
STX Start of Text. Special control character used to denote the start
of a message block. Always 02H.
Suite Room This is an optional feature of the NEAX that enables a group
of extensions to be treated as the same extension in a room.
Messages refer to all extensions in a suite by means of the
suite’s primary extension.
UA Unit Address. Always ‘!’ for the PMS interface.
Violation Code This is a special FTC that ranges from 80H to FFH. It
identifies a message from the PMS that the PBX (or UAP) has
rejected for some reason. The FTC of the original message,
subtract 80H from the violation code. The body of the original
message is unchanged.