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AT&T Door Phone Controller Compatibility Chart
Dedicated
Dedicated
Station
Station
Mode
Trunk
Trunk
Access
Access Auto
Loop
Ground
Port
Saver
Loop
Start
Trunk
Saver
Loop
Start
Aux. Alert
Ringdown
Start
Start (Analog) (Analog)
System
(Section 4)
(Section 4)
(Section 6)
(Section 3/6)
(Section 5)
(Section 5)
see Notes 8,7 see Note 4
DIP
Switches
Home Use
(single line
YES
NO
service)
NO
YES
NO NO
NO
PARTNER
NO YES
see Notes11,12
YES
NO
see Notes 11,12
NO
see Note 11
PARTNER
YES
YES
see Notes 11,12
YES
YES
see Notes 11,12
YES
see Note 13
NO
PLUS
see Note 11
Spirit
YES
NO YES
see Notes 4,6
YES
NO
see Notes 4,6
NO
308/616,
see Note 4
1224/2448
Merlin
YES
YES
YES NO
see Notes 4,5
NO
NO
206/410/820
See Notes 4,5 see Notes 4,5
Merlin II
YES
see Notes 4,5
NO
YES
see Notes 4,5,9
YES
YES
see Notes 4,5,9
YES
Merlin
YES
NO YES
see Notes 4,5
YES
NO
see Notes 4,5
NO
Plus
see Notes 4,5
Merlin
YES
NO
YES
see Notes 4,5,9
YES
YES
see Notes 4,5,9
YES
1030/3070
see Notes 4,5
System 25
YES
YES
see Notes 1,4
YES
see Notes 2,7
YES
YES
see Notes 2,7 see Note 1
YES
see Not e 1
see Notes 1,4
System 75
NO
NO NO NO NO
YES
see Note 14
System 85
NO
YES
see Note 4
NO NO
YES
YES
see Note 14
Dimension
NO
YES
see Note 4
NO
NO
YES
YES
see Note 14
Horizon
YES
YES
see Note 4
YES
see Notes 4,6,7
YES
YES
see Notes 4,6,7
YES
see Note 14
see Note 4
Comkey
YES
NO
YES
see Note 4
YES
NO
see Note 4
NO
see Note 14 see Note 4