Siemens 300Series 사용자 설명서

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ROLMphone 300/600 Series User Guide
Listen for the confirmation tone. If you 
have a display telephone, SYSTEM 
FORWARD OFF is displayed.
Hang up.
To restore Fixed 
Forwarding
Get a dial tone.
Dial # 9 0.
You will hear the confirmation tone. If you 
have a display telephone, SYSTEM 
FORWARD ON is displayed.
Hang up.
Variable Forwarding
Variable Forwarding lets you specify at your telephone one extension 
or outside number to which your incoming calls are forwarded.
Variable Forwarding takes precedence over Fixed Forwarding, so that 
you can control where and under which conditions your calls are 
forwarded even if forwarding targets have been set up for you at the 
communications server. Depending on the forwarding option you 
choose, Variable Forwarding may either completely override Fixed 
Forwarding or it may modify the types of calls which are forwarded or 
the conditions under which they are forwarded.
You can set up your extension to forward all of the following types of 
calls to another extension or outside number:
only internal
only external
both
Or you can select the following conditions under which either internal 
or external calls, or both, will be forwarded to another extension:
when your extension is busy