Toshiba IPT 用户手册

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Advanced Operation
Door Phone(s)
Strata CTX DKT/IPT Telephone     10/03
43
Door Phone(s)
Door phones can be used to call phones selected in system programming. When a door 
phone calls, you hear a distinctive ringing tone, one or five times (set in system 
programming). You can also call a door phone and monitor the surrounding area.
LCD telephones display the door phone name ID when calls are made to or from door 
phones. 
The number of possible door phones varies by Strata CTX system, 01~24 maximum 
for larger systems. Check with your CTX System Administrator to find out the names 
and locations of your system’s door phones and record them below.
➤ To answer a door phone call
When you hear a door phone call ringing, lift the handset or press the ringing 
button. A door phone call sounds like chimes (high/low). The extension LED 
flashes green (in-use) and you are connected to the door phone.
...or to pick up door phone calls ringing someone else’s telephone, press your 
extension + 
 + directory number of the ringing phone.
Door Phone
Name/Location
Door Phone
Name/Location