Panasonic KX-TD500 System Reference Manual page 772

4.00 Doorphone Calling
Description
The attendant can make and answer a doorphone
call.
Up to four doorphones can be connected to the
system.
During a doorphone call, dialing "5" opens the
door for a specified period.
Set the duration of the door opener in "Extension-
Doorphone", Open Duration. When Open
Duration is set to "0", the door opener is
unavailable.
Programming
System Programming
"System-Numbering Plan (3/11)",
Doorphone Call (1 to 4)
"Extension-Doorphone"
Conditions
If tenant service is employed, the affiliation of
each doorphone can be assigned by the system
programming in "Extension-Doorphone",
Tenant.The attendant can place a call to the
doorphone within the same tenant, but cannot
hold or transfer the doorphone call.
When a visitor presses the button on the door-
phone, ping-pong tone sounds twice, then
doorphone call ringing starts.
No answer of the call in 15 seconds cancels the
doorphone call.
Dialing "5" again while the door is open enables
the attendant to prolong the opening duration to
the specified duration assigned in "Extension-
Doorphone", Open Duration.
When you assign the destination of a doorphone
call to attendant consoles and have two attendant
consoles, the call arrives alternately to each
attendant console.
Reference
VT Dumb
11-C-11.00
10-D-6.03
10-G-3.00 11-C-29.00
6-H-4
Operation
Making a doorphone call
1. Press an idle LOOP key.
LOOP
• Dial tone sounds.
2. Dial the feature number for
"Door- phone Call (1 to 4)"
(Default: *40), then, dial the
doorphone number (1 to 4)
• After hearing confirmation tone,
start conversation over the
door-phone.
Opening a door
1. Dial "5".
• The door opens for the
specified duration.