Tii VIS-2 User Manual
Tii Equipment

tii P/N: 92225501
To other
Phone
’s in Premise
VoIP
From
ATA/EMT
A
3
141 Rodeo Drive
Edgewood, NY 11717 tii VIS-2
Toll Free 888.844.4720
VoIP INTERCOM SWITCH
www.tiinettech.com
Rev B 12/07
INSTALLATION NOTE
1. DESCRIPTION
1.1 The tii VIS-2 (VoIP Intercom Switch) is a
microprocessor
controlled
module
that
provides seamless switching between VoIP
service and Intercom calls in multiple
dwelling unit’s (MDU’s).
1.2 The tii VIS-2 is able to attend the Intercom
calls while using VoIP service. The VIS-2
provides call waiting type functionality
between the two services.
1.3 The tii VIS-2 is for indoor use only.
1.4 The tii VIS-2 does not draw any current from
the Intercom line.
2. WARRANTY
2.1 See tii Warranty. If this unit fails during the
warranty period, contact tii customer service
to authorize return and return the unit
prepaid. Units that fail due to normal wear or
abuse should be discarded.
3. INSTALLATION
3.1 Remove the unit from the bag and inspect it
for damage. If damaged, request another
unit.
3.2 Locate a suitable flat, dry area to install the
unit.
3.3 The VIS-2 should be located near the first
appearance of the Intercom Phone. The VIS-
2 is supplied with double faced tape for
secure installation.
4. WIRING
CAUTION:
On the Intercom Input
Pin’s 1 and 4 are
wired as Intercom Input, Pin’s 2 and 3 are
wired for local customer phone output
(Connected in parallel to Local A phone
output). Confirm interface wiring prior to
plugging in device. Damage to the digital
modem can occur if not properly wired.
House Phone
4.1 Plug one end of the RJ-11 cable to the
house phone receptacle on the VIS-2
labeled Local A Phone. Plug the other
end to the phone at location (Figure 1).
Digital Phone Modem
4.2 Plug one end of another RJ-11 cable to
the digital phone modem receptacle on
the VIS-2. Plug the other end to the RJ11
output from MTA/EMTA of cable modem
(Figure 1) labeled Digital Phone Modem.
Intercom
4.3 Plug one end of the third modified (See
Caution Note Above) RJ-11 cable to the
intercom receptacle on the VIS-2 (Figure
tii VIS-2
Phone at
location
3
2
2
1
2
2
2
3
2
4
2
Intercom Input
Figure 1