NDA-30115 Revision 1.0 Page 1
Property Management System - Communication Interface Overview
Chapter 1 Overview
This document is a description of the interface between the NEC NEAX2400 IMS
(hereafter referred to as the NEA X) and the hotel’s Property Manageme nt System
(PMS). This document contains almost all (see below) of the information specified
in the NEAX2400 IMS Hotel System PMS Interface Specifications (document ND-
90265 (E) Issue 2), and is intended to replace it.
The PMS and NEAX may communicate using either an asynchronous or
bisynchronous (BSC) method over a serial line. The transmission protocols are
thoroughly described in the Architecture section. Th e descripti ons of the messages
transmitted are in the Descriptions section. The formats of the messages are in t he
Formats section. For a complete list of all messages, please see Appendix C,
“Feature Codes” and Appendix D, “Function Codes”.
Information specified in the NEAX2400 IMS Hotel System PMS Interface
Specifications document, but not included in this document are the messages
specific to Model 120. Those messages are 56-3, 61-2, 58-1, 58-2, 58-3, 58-4 and
58-5. These messages are for the Directory Assistance Interface [D-88] feature,
which is not used in the United States.