Tii VIS-4 User Manual

P/N 92230501 • Rev B• 3/25/2008

Warranty: If this unit fails during the warranty period, contact tii customer service to authorize return. Unit may be returned prepaid.

Model VIS-4

VOICE INTERCOM SWITCH

Installation Note

From Digital

Voice Service

To Phone at

Premises

3 2

From

DAS/Intercom

Figure 1

Digital Voice

VIS-4

Phone

Intercom

DAS

Pins 2,3

Output

Input

Phone

Premises

Description

Installation

1. The tii VIS-4 (Voice Intercom Switch) is a microprocessor controlled module that provides seamless switching from Digital Voice Service to Door Answering Systems (DAS)/Intercom service in multiple dwelling

unit’s (MDU’s). It also includes dial down

functionality.

2. The tii VIS-4 enables attending to the DAS/Intercom calls while using Digital Voice Service. The VIS-4 provides call waiting type functionality between the two services.

3. The tii VIS-4 is for indoor use only.

4. The tii VIS-4 switches to the DAS/Intercom when the Digital Voice Service loses power. The user can also access the DAS intercom line using a special dial down code.

5. The tii VIS-4 provides line hold function while answering the DAS intercom.

1. Locate a suitable flat, dry area to install the unit.

2. The existing telephone wiring to the MDU may need to be modified to enable all telephone connections in the MDU to connect through the VIS-4.

3. Locate the first appearance of the DAS Intercom telephone connection wall jack to the MDU. Rewire the connections so that the incoming wires from the DAS intercom are connected to pins 2 & 3 of the RJ-11 marked DAS/Intercom Input. Refer to Figure 2 for a rewiring example.

Figure 2

MODIFIED WIRING

WALLPLATE

FIRST PHONE LINE

APPEARANCE

UNMODIFIED WIRING

MDU

WALLJACK

ADD'L

WALLJACK'S

MDU

12 3

TELCO / DAS / INTERCOM

DAS / INTERCOM

PREMISES

PHONES

Premises

Phone

VIS-3

Digital Voice Service Power

Phone

DAS

Intercom

Pins 2,3 Pins 2,3 Pins 2,3

Output

Input

Digital Voice

TELCO / DAS / INTERCOM

WALLPLATE

FIRST PHONE LINE

APPEARANCE

WALLJACK

ADD'L

WALLJACK'S

12 3

WIRES FROM DIGITAL

VOICE SERVICE

Wiring

Premise Phones

1. Plug one end of the RJ-11 cable to the phone at premises receptacle on the VIS-4. Connect the other end of the cable to the phone connection to the whole premises.

Digital Voice Service Device

1. Plug one end of another RJ-11 cable to the Digital Voice Service receptacle on the VIS-4. Connect the other end to the RJ11 output from the voice output of ONT (Optical Network Terminal) (Figure 1).

Intercom

1. Plug one end of the third RJ-11 cable to the DAS / Intercom receptacle on the VIS-4 (Figure 2).

2. Connect the other end of the cable to the rewired (Per Figure 2) intercom input.

Testing

1. On power-up the unit is in Digital Voice Mode. The LED should start flashing within a few seconds of powering up (Figure 3).

2. The VIS-4 will automatically switch to DAS / Intercom Mode when the Local Digital Voice Service power is disconnected.

3. When the DAS / Intercom rings and the Digital Voice line is on hook, the VIS-4 will switch to the DAS / Intercom. After answering the intercom or the ringing has stopped, the VIS-4 will switch back to Local Digital Voice Service mode.

4. To answer the DAS / Intercom when the Digital Voice line is in use, press the flash hook switch momentarily, this will hold the Digital Voice line and at the same time switch the VIS-4 to DAS / Intercom mode.

5. When finished with the DAS / Intercom call, press the flash hook switch momentarily to recover the Voice line. In some case the flash switch may need to be activated twice to recover the voice line.

6. The VIS-4 is programmed to switch to Digital Voice Mode when not in use.

7. To test the VIS-4 switch to DAS / Intercom in the event of power loss on the Voice service, pull the RJ-11 plug from the Voice service jack. The VIS-4 will switch over to the Intercom side within a few seconds.

DIAL DOWN FEATURE TEST

1. Lift the hand set of the local phone. You will hear dial tone from the Local Digital Voice Service.

2. Dial “#” on the phone. While dialing this code, ignore voice messages from the voice phone service. As soon as the proper dialing sequence is completed, the VIS-4 will switch to the DAS / Intercom line. Dialing the code must commence within 5 seconds of going off hook, after that the Dual Tone Multi-frequency detection chip function is disabled.

3. Dial out desired function numbers on the Intercom line. The VIS-4 will switch back to Voice service as soon as you hang up the phone or activate the flash button.