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Table 7-1. Troubleshooting Procedures (Continued)
Trouble Possible Cause
Possible Solution
Cannot open door remotely
Improper wiring to existing door
Verify all connections when
using either Remote Door strike device. May be caused
connecting the door strike
Open Button or the Door
by improper connection and use
contacts on the AT&T Door
Code
of NO (Normally-Open), NC
Phone Controller to existing
(Normally Closed), and C
door open buttons. Make sure
(Common) door latch relay
of the following:
contacts, especially when
interfacing these contacts to
1. The NO and C contacts
existing door configurations.
are connected in parallel to a
normally-open button.
2. The NC and C contacts
are connected in series to a
normally-open button.
Selected options are not
Incorrect or inappropriate values
Use Verify mode to confirm
operating as expected
were entered.
selected options without
changing the values.
Carefully consider the
“consequences” of options
chosen.
Maintenance
Periodic maintenance is not required.
Units requiring repair are returned to AT&T for service.
7-4 Troubleshooting and Maintenance