MULTIPLE UNIT INSTALLATIONS
Any of the four basic operation modes (Shared Line, Dedicated Line,
Intercom, and Ring Down) may be used with multiple RE-2s. The
telephone line wiring is "daisy chained" (the telephone line routes
through one unit to the next) as shown below. Always connect the
telephone line + to TIP, and - to RING.
The Telephone Bypass Module only performs the bypass function
in the Shared Line Mode, but it will provide extra electrical surge
protection in all modes. A surge on the TELCO terminals will be
suppressed through the EARTH GROUND terminal. Always use
separate AC transformers to power each RE-2.
When multiple units are connected together, only two units can be
controlled by resident telephone commands, and only one unit
can be programmed to answer the telephone (PPN #33) for remote
telephone commands. Remote programming via computer is not
supported when using multiple RE-2s.
SHARED LINE
MODE
TO
HOUSE
TELEPHONES
RING
HOUSE
TIP
RING
RE-2
TELEPHONE
HOUSE
TIP
BYPASS
RING
MODULE
RE-2
TELCO
TIP
EARTH
FROM
RING
GROUND
TELEPHONE
TELCO
TIP
COMPANY
DEDICATED LINE
MODE
PROGRAM ALL
RE-2 UNITS FOR
"CALL FORWARDING"
(PPN #54)
RING
HOUSE
TIP
RING
RE-2
TELEPHONE
HOUSE
TIP
BYPASS
RING
MODULE
RE-2
TELCO
TIP
EARTH
FROM
RING
GROUND
TELEPHONE
TELCO
TIP
COMPANY
OR PBX
FIRST
LAST
RE-2
RE-2
ENTRY
ENTRY
SYSTEM
SYSTEM
CASE
GROUND
HOUSE
TELCO
HOUSE
TELCO
GROUND
STAKE
GROUND
STAKE
FIRST
LAST
RE-2
RE-2
ENTRY
ENTRY
SYSTEM
SYSTEM
CASE
GROUND
HOUSE
TELCO
HOUSE
TELCO
GROUND
STAKE
GROUND
STAKE
Figure 10. Multiple Unit Wiring
Command Prefi x for Multiple Units
Programming and relay control may be through the individual RE-2
keypads or through the house telephone(s) when using the Shared
Line or Intercom Modes. To support using the house telephone(s)
to issue commands, each RE-2 must be programmed to a different
"command prefi x" (PPN #72).
• Set one unit's command prefi x to
• Set the other unit's command prefi x to
In the case of simultaneous visitors at different units when using
the Shared Line Mode, putting one RE-2 "on hold" to communicate
with the second RE-2, then returning to the fi rst RE-2 is not
recommended. Instead, fi nish all communications with the fi rst RE-2
before servicing the second RE-2. Simultaneous visitors at multiple
units used on a single line wired in the Ring Down Mode will cause
a "conference call" effect between units
INTERCOM
PROGRAM THIS
RE-2 UNIT ONLY FOR
MODE
"INTERCOM MODE"
CASE
GROUND
INTERCOM
TELEPHONES
DO NOT CONNECT
TO A LIVE TELEPHONE LINE
RING
HOUSE
TIP
RING
RE-2
TELEPHONE
HOUSE
TIP
BYPASS
RING
MODULE
RE-2
TELCO
TIP
EARTH
GROUND
RING
STAKE
GROUND
TELCO
TIP
RING DOWN
MODE
CASE
PROGRAM ALL
GROUND
RE-2 UNITS FOR
"RING DOWN MODE"
(PPN #54)
IF DESIRED, CHANGE
RESIDENT RESPONSE KEYS
(PPN #71)
RING
HOUSE
TIP
RING
RE-2
TELEPHONE
HOUSE
TIP
BYPASS
RING
MODULE
RE-2
TELCO
TIP
EARTH
GROUND
RING
STAKE
GROUND
TELCO
TIP
FIRST
RE-2
ENTRY
(PPN #52)
SYSTEM
CASE
GROUND
TO
HOUSE
TELCO
GROUND
STAKE
GROUND
STAKE
FIRST
RE-2
ENTRY
SYSTEM
CASE
GROUND
HOUSE
TELCO
GROUND
FROM
STAKE
GROUND
PBX
STAKE
LAST
RE-2
ENTRY
SYSTEM
CASE
GROUND
HOUSE
TELCO
GROUND
STAKE
LAST
RE-2
ENTRY
SYSTEM
CASE
GROUND
HOUSE
TELCO
GROUND
STAKE
7
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