Discontinued Product Compatibility
If your question is not answered here, or the
literature you need is not listed, you may submit a question directly to Technical Support
by clicking HERE.
If you have one of the systems listed below, it may
be replaceable with the newer version of a similar system.
If you require additional information about you
system please refer to specific instructions located on the Discontinued Literature page or contact our Technical
Support department.
AP-S High
Powered System (Back
To Top)
- Introduced in 1970
- Discontinued in 1978
- Replace with the AP-M System
- Fully compatible with AP-M
- AP-S Instructions
DL Apartment
Intercom (Back
To Top)
- Introduced in 1972
- Discontinued in 1975
- Replace with the VC-M System
- No compatibility
DX Duplex System
(Back To Top)
- Introduced in 1981
- Discontinued in 1986
- No replacement
EX Phone System
(Back To Top)
- Introduced in 1979
- Discontinued in 1986
- No replacement
HM-7 Home System
(Back To Top)
IBG Door
Answering System (Back
To Top)
- Introduced in 1983
- Discontinued in 1987
- Replace with the IE System
- No compatibility
IC Chime Tone System
(Back To Top)
- Introduced in 1987
- Discontinued in 1991
- Replace with the IE System
- No compatibility
- IC Instructions
KAH Speaker
Phone System (Back
To Top)
- Introduced in 1975
- Discontinued in 1987
- No replacement
LAF Intercom System
(Back To Top)
- Introduced in 1975
- Discontinued in 1989
- Replace with the LEF System
- Fully compatible with LEF
- LAF Instructions
LAF-B Intercom
System (Back
To Top)
- Introduced in 1975
- Discontinued in 1992
- Replace with the LEF-C System
- Fully compatible with LEF-C
- LAF-B Instructions
LAM Two Station
System (Back
To Top)
- Introduced in 1974
- Discontinued in 1992
- Replace with the LEM System
- Fully compatible
- LAM Instructions
LC-S Selective
System (Back
To Top)
- Introduced in 1967
- Discontinued in 1975
- Replace with the LEF System
- No compatibility
MA Video System
(Back To Top)
- Introduced in 1983
- Discontinued in 1984
- Replace with the MY System
- No compatibility
MB Video System
(Back To Top)
- Introduced in 1984
- Discontinued in 1986
- Replace with the MY System
- No compatibility
MC Video System
(Back To Top)
- Introduced in 1986
- Discontinued in 1988
- Replace with the MY System
- No compatibility
MF Video System
(Back To Top)
- Introduced in 1988
- Discontinued in 1990
- Replace with the MY System
- No compatibility
MC-3 Market-Com
System (Back
To Top)
- Introduced in 1978
- Discontinued in 1995
- Replace with the MC-60/4A System
- Compatible (click here to request
further details)
- MC-3 Instructions
MJS-1AD Video System
(Back To Top)
- Introduced in 1993
- Discontinued in 1997
- Replace with the MK System
- No compatibility
- MJS-1AD Instructions
MYS-1AD Video System
(Back To Top)
- Introduced in 1989
- Discontinued in 1993
- Replace with the MK System
- No compatibility
- MYS-1AD Instructions
MY-U Video System
(Back To Top)
- Introduced in 1990
- Discontinued in 1993
- Replace with the MY-CU System
- Compatible, but new system
includes PanTilt feature.
N/NAP Lamp
Memory System (Back
To Top)
- Introduced in 1968
- Discontinued in 1984
- Replace with the NEM System
- Limited compatibility with
modification (click here
to request further details)
TA-F Handset System
(Back To Top)
- Introduced in 1966
- Discontinued in 1978
- Replace with the TD-H System
- No compatibility
TA-H Handset System
(Back To Top)
- Introduced in 1967
- Discontinued in 1978
- Replace with the TD-H System
- No compatibility
TB-F Handset System
(Back To Top)
- Introduced in 1978
- Discontinued in 1987
- Replace with the TD-H System
- Limited compatibility with
modification (click here
to request further details)
- TB-F Instructions
TB-H Handset System
(Back To Top)
- Introduced in 1978
- Discontinued in 1987
- Replace with the TD-H System
- Fully compatible with TD-H
- TB-H Instructions
TA-R
Telephone-type System
(Back To Top)
- Introduced in 1971
- Discontinued in 1974
- Replace with the TB-M System
- No compatibility
TA-T System
(Back To Top)
- Introduced in 1975
- Discontinued in 1982
- Replace with the TC-M System
- No compatibility
TA-Y System
(Back To Top)
- Introduced in 1970
- Discontinued in 1978
- Replace with the TD-H System
- No compatibility
TB-T System
(Back To Top)
- Introduced in 1982
- Discontinued in 1996
- Replace with the TC-M System
- TB-SE handsets are compatible,
but have different call tone
- New TC-M master can be used with
old TB-RC handsets
- TB-T Instructions
TS-K System
(Back To Top)
- Introduced in 1971
- Discontinued in 1986
- No replacement
VAM Apartment System
(Back To Top)
- Introduced in 1976
- Discontinued in 1990
- Replace with the VC-M System
- VC-K Handsets are compatible
with modification (click here to request
further details)
- VAM Instructions
VB Multi-unit
Video System (Coaxial)
(Back To Top)
- Introduced in 1985
- Discontinued in 1992
- Replace with the VY System
- No compatibility
- VB Instructions
WBS Wireless
Intercom (Back
To Top)
- Introduced in 1984
- Discontinued in 1988
- No replacement
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