User Guide for the SIP-T54S Media IP Phone 
196 
After configuring an ACD key, you can press the ACD key to log into the ACD system. After 
logging in, you are ready to receive calls from the ACD system. You can press the ACD key to 
show your current ACD user status. You can press the Available/Unavailable soft key to change 
your ACD user status. ACD user status synchronizes on both IP phone and ACD system. 
When you set the ACD user status to be available, the ACD key LED illuminates solid green, and 
then the server begins distributing calls to your IP phone. 
When you set the ACD user status to be unavailable, the ACD key LED flashes green, and then 
the server temporarily stops distributing calls to your IP phone. To log out of the ACD system, 
press the Logout soft key. 
Note 
Shared Call Appearance (SCA) 
You can use SCA feature to share an extension which can be registered on two or more IP 
phones at the same time. The shared line is indicated by a different line icon. 
In the following figure, the first line is private and the second line is shared: 
 
If two phones share a line, an incoming call to this extension will cause both phones to ring 
simultaneously. The incoming call can be answered on either phone but not both. 
This feature is very useful in the boss and secretary scenario. For example, the secretary can 
share the boss's extension on her phone. When there is an incoming call to the extension of the 
boss, both the phones of the boss and the secretary will ring simultaneously. Either the boss or 
the secretary can answer the call. Calls on the shared line can be placed on hold, barged in or 
retrieved from another shared phone.   
It is recommended you configure no more than one ACD key per phone. At any time, at most one 
ACD key can be in progress on your phone.