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NDA-30115 Revision 1.0 Page 39
Property Management System - Communication Interface Message Formats
MWL Status
Figure 4-8 MWL Status
Message fields are:
• Extension -- Extension number. If the extension number is less than six digits,
left justify the number and fill the remaining bytes with space (20H) characters.
• Status -- Message Waiting Lamp status. The status values are:
• 0 -- No messages waiting.
• 1 -- Message waiting set by the NEAX.
• 4 -- Message waiting set by the PMS.
• 5 -- Message waiting set by both the PMS and NEAX.
• Option -- Message Waiting Lamp status option. This field must always contain
zero (‘0’).
• VMC -- This is reserved for future use. Should be filled with two space (20H)
characters.
‘5’‘3’‘1’‘5’‘1’ Extension Status
Option VMC
01234 6 89 15
STX SA UA EI FTC MSC FC 6 1
02H ‘1’‘!’‘L’
ETX BCC
12
16 17 19 20
03H xx