Troubleshooting and Repair
89
Tr
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sho
oting
PBX and PMS Cannot Communicate
If the PBX’s PMS interface and the customer’s PMS computer cannot
communicate, the system will generate PMS related maintenance log
messages. Typically, PMS maintenance log messages will identify
n
Operating status of the PMS
n
Invalid
start
(STX) and
end
(ETX) of text message characters
n
Invalid
function
code message characters
n
Invalid
status
code message characters
n
Invalid
room number
message characters.
Testing the PMS Interface of the PBX
PMS problems typically occur in these areas:
n
PMS Protocol settings:
Ensure that the communication
parameters between the systems match.
n
PMS Programming:
Verify that all the recommended PMS and
Dataset programming is complete.
n
PMS Cabling:
Use a straight-through cable between the customer’s
PMS computer and the Dataset.
Test the PBX’s PMS interface as follows:
1. Disconnect the customer’s PMS computer from the Dataset.
2. Connect a personal computer or terminal to the Dataset’s RS-232
port.
n
Ensure that the communications parameters of the personal
computer / terminal match those expected by the PBX’s PMS
interface.
n
Verify that you receive the
ENQ
uire character from the PBX’s PMS
interface. If not, verify that all the programming and the connections
are correct.
3. Type the PMS message required to light a telephone’s message
waiting lamp, using CAPITAL letters only. See the following
example.
Summary of Contents for SX-200 EL
Page 1: ...TECHNICIAN S HANDBOOK LIGHTWARE 19 RELEASE 3 0 ...
Page 11: ...Chapter 1 Introduction ...
Page 12: ......
Page 32: ...Technician s Handbook 22 ...
Page 33: ...Chapter 2 Routine Maintenance ...
Page 34: ......
Page 55: ...Chapter 3 Troubleshooting and Repair ...
Page 56: ...Technician s Handbook 46 ...
Page 88: ...Technician s Handbook 78 Figure 16 E M Trunk Type I 2 wire ...
Page 110: ...Technician s Handbook 100 ...
Page 111: ...Chapter 4 Programming ...
Page 112: ......
Page 168: ...Technician s Handbook 158 ...
Page 169: ...Chapter 5 Installation ...
Page 170: ......
Page 239: ...Chapter 6 Maintenance Commands ...
Page 240: ......
Page 258: ...Technician s Handbook 248 ...
Page 261: ...Notes ...
Page 262: ...Technician s Handbook Notes ...