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Mitel NuPoint Messenger Technical Documentation - Release 7.0
 
A server administrator can configure whether message waiting indicator on or off requests are 
sent out for every new unplayed message, or only when the message waiting indicator state 
changes from off to on or from on to off.  Using the latter functionality (only when the message 
waiting indicator state changes) makes better use of server resources. 
The server does not suppress message waiting indicator updates by default.  To suppress them, 
you must enter the message waiting type number of your RS-232 system, then enter Yes.  (The 
default is No for all types.) 
Message waiting types are listed in Table 5-4. 
Modem Result Code 
The modem result code parameter allows the server to determine if a message waiting request 
was accepted by the switch, and to retry a failed request if necessary. The modem result code 
tells the server to look for a certain message from the modem to indicate that the message 
waiting request was accepted by the switch. You must know the message that the modem 
returns, for example, "NO CARRIER." The server looks for the exact message set in the Modem 
Result Code field, and, if it does not see it, retries the message waiting request up to 18 times. 
You can find out what result code the modem returns by setting this field to some value (it doesn't 
matter what), and then turning on the Pager/Programmable RS232 interface in Event Recorder. 
Use the Lights Test to send an MWI request to a mailbox that has its MWI type set to 
Programmable RS232. The Event Recorder message will show you the actual result string that is 
returned from the modem. You can then set the Modem Result Code field to that value, assuming 
that the request was completed successfully. 
Leave this field blank to have the server ignore any result code returned by the modem and 
assume that all message waiting requests are successful. To remove a previously configured 
value, enter a period. 
Testing 
Create at least one mailbox with the RS-232 message waiting type that is appropriate for your 
server.  To test RS-232 message waiting indicators, choose the Lights Test option from the 
server maintenance console, and select the proper message waiting type.  See the task list for 
testing procedures.  
Table 5-4 
Message Waiting Types 
Number Message 
Waiting 
Type 
0 None 
1 Not 
available 
2 AC 
message 
lamp 
3 DTMF-to-PBX 
Fixed RS-232 (and Hitachi DX) 
5 Pager 
6 SL-1 
7 Program 
RS-232 
Tip & Ring RS-232 
9 Centrex 
RS-232 
10 Intecom 
RS-232 
11 NEC 
RS-232 
12 Video 
Dispatch 
13 ITT 
RS-232 
14 Text 
©Copyright 2002, Mitel Networks Corporation 
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