Polycom SX-50 Benutzerhandbuch

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LinkPlus Interface Guide: Mitel SX-50, -200, -2000 System 
PN: 1725-36137-001_E.doc 
10 
Feature Programming Requirements 
When planning the interface, the following information must be taken 
into account: 
Line sequences 
The handset uses two types of key sequences to access PBX features 
and multiple lines. Line sequences are those where the user presses 
the 
LINE
 key and then a number key. The key-map design designates 
“line” keys that should be programmed for line appearance so that 
they correspond to line sequences on the handset.  
The 
LINE
 icon on the handset will reflect activity on the corresponding 
deskset key. For this reason, it is recommended that line appearance 
keys be used only for line access. If only one line is assigned to a 
particular handset, leave the other designated line keys identified on 
the key maps unassigned. The corresponding handset 
LINE  
+ key 
sequences will then have no function.  
• 
Line select keys 1-9 have corresponding digit icons on the handset 
display. These icons indicate line status (on, off, slow flash, fast 
flash, wink) similar to the Superset 420 icons. Use these for line 
access. 
• 
Line select keys 10-12 (associated with the handset’s 
FCN
 key, see 
key-mapping diagram) do not have digit icons and should be 
used for functions or lines that do not require LCD indicators. 
Function sequences 
Function sequences are those where the handset user presses the FCN 
key and then a number key. Designated “function” deskset keys 
programmed to system features such as Transfer and Conference may 
have their corresponding menu items display on the handset function 
menu. See the key-map diagram for the function keys that are 
available for feature programming.