DEFINITY ECS Release 8.2
Administrator’s Guide
555-233-506 Issue 1
April 2000
Features and technical reference
1361Hospitality features
20
The PMS Interface provides the following:
■A communications protocol for controlling message exchange between the
switch and a PMS
■An application module for controlling the operation of PMS features
■Status data on all guest/patient rooms for selected features
The protocol is full-duplex asynchronous and provides the mechanisms for s etting
up a data session with PMS, message-exchange control, error identification, and
recovery. The interface supports standard data rates.
Two protocol modes are provided: the normal-protocol mode as described above,
and transparent-protocol mode. Normal-protocol mode supports a character set
that has a combination of Binary Coded Decimal (BCD) characters and ASCII
characters. Transparent-protocol mode supports a complete ASCII-character set.
The application module of the PMS Interface implements requested features and
provides backup if the PMS link is down. Whether or not the link is down, the
switch always maintains the following data for each r oom:
■Whether the room is vacant or occupied
■Whether the phone’s message lamp is on or off
■Whether a controlled restriction is active at the phone and, if so, which one
■The guest’s name and coverage path
Names Registration Activated via
administration Activated via PMS
terminal — Transparent or
ASCII mode
Room Change/Swap
and Guest
Information
Input/Change
Activated via
administration Activated via PMS
terminal — Normal,
Transparent, or ASCII
mode
Room Occupancy Activated via console
button Activated via PMS
terminal — Normal,
Transparent, or ASCII
mode
Table 52. PMS/Switch links
Feature Switch Only With PMS