Toshiba Strara CTX Series, Installation And Maintenance Manual, Page: 261 / 290

Peripheral Installation
8-15
Strata CTX I&M September 2002
Calling from a Door Phone
Each door phone has a push button that rings selected telephones with one of three unique bing-bong
sounds. The door phone’s location displays on ringing telephone LCDs. The three bing-bong ring
types are permanently assigned to each of the DDCB ports (A, B and C) as shown in
Figure 8-16 . Door
phones can also be programmed to ring over the system’s external paging equipment. When a
telephone answers a door phone call, a two-way talk-path is established between the calling door
phone and the called telephone.
Calling a Door Phone
Each door phone has a unique directory number that can be dialled from system telephones. When a
system telephone calls a door phone, the door phone does not ring but provides a two-way talk-path
between the calling telephone and the called door phone. This enables telephone users to monitor
sounds in the general area where the door phone is installed.
Door Lock Control
As an option, Port B of the DDCB can be connected to a door lock control device, instead of a door
phone, to unlock a door. The door lock control device is not supplied by Toshiba and must be ordered
separately. The door lock option is a hardware jumper located on the DDCB. This option provides
relay contacts that will open, or close the Port B wire pair when a telephone’s door lock button is
pressed or when a door lock feature code is dialled from a telephone (see
Figure 8-16 for option
settings).
Door Phone/Lock Programming
Door phone assignments are in Program 507 and door lock assignments are in Program 508.
MDFB Wall Mounting
1. Remove the screw from the bottom of the cover.
Detach the cover from the base and metal frame
(see
Figure 8-15 ).
2. Position the metal frame and base to the
mounting surface and secure with two one-inch
panhead wood screws.
3. Attach cover to the metal frame and base and
secure with the screw which was removed in
Step 1.
MDFB Volume Control Adjustments
1. Remove the screw from the bottom of the
MDFB cover.
2. Detach the cover from the base and metal frame.
3. The volume level is changed by a screw
adjustment on the back of the MDFB. Turn the
screw with a flat-headed screwdriver while
ringing the MDFB or while on a call with it. The
volume level will change as the screw is turned.
Two Wall
Mounting Holes
Door Phone
Base
Metal Frame
8.3cm or
(3.25")
1494
Figure 8-15 Door Phone (MDFB) Installation