Mitel SX-200 EL Technician's Handbook page 97

The following is a PMS message format that enables a telephone's
message waiting lamp.
^B
M W
Start Trans- Function Code
action STX
The CTRL The MW fol-
(^) B charac- lowed by a space
ter signals the indicates that the
start of a PMS requests a
PMS mes- message waiting
sage function
Message Formats from PBX to PMS
Maid in Room status
Maid in Room status is sent as a 10-character message, as follows:
_ _ _ _ _ _ _ _ _ _
function code
status code
station number
Message Registration of Outgoing Trunk Calls
Message Registration of Outgoing Trunk Calls status is sent as a
12-character message, as follows:
_ _ _ _ _ _ _ _ _ _ _ _
function code
status code
station number
PBX and PMS 5-digit Extension Number Formats
The extension number is sent between the PBX and the PMS as a
5-digit number. Numbers that are fewer than 5 digits include spaces:
PBX to PMS extension number nnnnn with trailing spaces
PMS to PBX extension number nnnnn with leading spaces
1
space
space space
Status Code
1 followed by Identifies the exten-
a space turns sion number of the
on the mes- telephone on which
sage waiting the message waiting
lamp. 0 turns lamp lights. The PMS
the lamp off inserts leading
space(s) to indicate
that no number is
present
STS
n
space (n is assigned room status code
nnnnn
MR
nnnn
nnnnn
Troubleshooting and Repair
2 1 2 9
Station's Extension End Transac-
(Room) Number
The CTRL (^) C
character signals
the end of a
PMS message
(with trailing spaces)
space
(nnnn is a 4-byte peg count)
(with trailing spaces)
^C
tion ETX
)
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