7
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.
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
Figure 10. Multiple Unit Wiring
TIP
RING
TIP
RING
TIP
RING
TIP
RING
TELCO
RE-2
TELCO
RE-2
HOU
S
E
HOU
S
E
TELEPHONE
BYPASS
MODULE
EARTH
GROUND
GROUND
S
TAKE
FIRST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
LAST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
FROM
TELEPHONE
COMPANY
TO
HOU
S
E
TELEPHONE
S
GROUND
S
TAKE
GROUND
S
TAKE
TIP
RING
TIP
RING
TIP
RING
TIP
RING
TELCO
RE-2
TELCO
RE-2
HOU
S
E
HOU
S
E
TELEPHONE
BYPASS
MODULE
EARTH
GROUND
GROUND
S
TAKE
FIRST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
LAST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
TO
INTERCOM
TELEPHONE
S
GROUND
S
TAKE
GROUND
S
TAKE
SHARED LINE
MODE
INTERCOM
MODE
DEDICATED LINE
MODE
RING DOWN
MODE
PROGRAM THI
S
RE-2 UNIT ONLY FOR
"INTERCOM MODE"
(PPN #52)
DO NOT CONNECT
TO A LIVE TELEPHONE LINE
TIP
RING
TIP
RING
TIP
RING
TIP
RING
TELCO
RE-2
TELCO
RE-2
HOU
S
E
HOU
S
E
TELEPHONE
BYPASS
MODULE
EARTH
GROUND
GROUND
S
TAKE
FIRST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
LAST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
FROM
TELEPHONE
COMPANY
OR PBX
GROUND
S
TAKE
GROUND
S
TAKE
PROGRAM ALL
RE-2 UNIT
S
FOR
"CALL FORWARDING"
(PPN #54)
TIP
RING
TIP
RING
TIP
RING
TIP
RING
TELCO
RE-2
TELCO
RE-2
HOU
S
E
HOU
S
E
TELEPHONE
BYPASS
MODULE
EARTH
GROUND
GROUND
S
TAKE
FIRST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
LAST
RE-2
ENTRY
SYSTEM
TELCO
RING
TIP
RING
TIP
EARTH
HOU
S
E
CA
S
E
GROUND
FROM
PBX
GROUND
S
TAKE
GROUND
S
TAKE
PROGRAM ALL
RE-2 UNIT
S
FOR
"RING DOWN MODE"
(PPN #54)
IF DE
S
IRED, CHANGE
RE
S
IDENT RE
S
PON
S
E KEY
S
(PPN #71)
