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LEGEND
Off
On
Figure 4-1. DIP Switch Setting for PBX with Dedicated Trunk Port
Installation
When moving the AT&T Door
Phone Controller or adding or
removing cables from the back
panel, unplug transformer from
120V outlet. Also unplug the
terminal strip and modular
cords.
Complete information regarding
each DIP switch position can be
found in Appendix A.
. . . The C.O.
(Trunk Saver Mode)
Immediately
after cut-thru
(Dialing Trunk) to AT&T
Door Phone Controller,
what do you want to
be connected
to...?
.
. . The DOOR
(Port Saver Mode)
To customize the AT&T Door Phone Controller use the
information supplied in Section 2 and the diagram in Figure
4-2a. For ground start installations, also see Figure 4-2b.
phone connectors on the back panel.
Install the AT&T Door Phone Controller using the information
supplied in Section 2 and the diagram in Figure 4-2a. For
ground start installations, also see Figure 4-2b.
1
LOOP START
ON
ON for
Option Selection
Mode Only
1
2
ON
LOOP START
Installation - Dedicated Trunk Port
2
3
4
5
6
7
8
3
4
5
6
7
8
4-3
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Troubleshooting
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