Where analog phone extensions are required in another building, additional protective equipment must be used, in the form of IP Office Phone Barrier Boxes and protective earth connections.

icon_warning CAUTION
PHONE (POT) ports on the front of control units must not be used for extensions that are external to the main building.

The correct IP Office specific barrier boxes must be used. These modules have been designed specifically for the signalling voltages used by the IP Office system:

Only the IP Office Phone Barrier Box should be used with Phone V1 modules.

Only the IP Office Phone Barrier Box V2 should be used with Phone V2 modules.

No other type of analog phone barrier box should be used.

Where more than 3 barrier boxes are required in a building, they must be rack mounted using a Barrier Box rack mounting kit.

A maximum of 16 barrier boxes can be used with any Phone module.

The Phone Barrier Box does not connect the ringing capacitor in Phone V1 modules.

Inter_Building_BB

Main Building

Barrier Box

Secondary Building

RJ11
Connect to PHONE (POT) port on the Phone module using cable supplied with the barrier box.

RJ45
Connect to the secondary building barrier box via primary protection in both buildings.

barrier_box_front

RJ11
Connect to analog phone. Cable not supplied.

RJ45
From main building via primary protection in both buildings.

Center Screw
Connect to main building protective ground (or ground terminal of Barrier Box Rack Mounting Kit). Use 18AWG (minimum) wire with a green and yellow sleeve.

Right-Hand Screw
Connect to ground point on Phone module using ground cable supplied with barrier box.

barrier_box_rear

Center Screw
Connect to main building protective ground. Use 18AWG (minimum) wire with a green and yellow sleeve.

Right-Hand Screw
Not used.

1.The following wires must be kept apart, that is not routed in the same bundle:

Earth leads from the barrier box to the Phone modules.

Internal wires, for example extension leads going directly to the Phone modules.

Wires from external telephone going directly to the barrier boxes.

IP Office Barrier Boxes

SAP Code

barrier box 3d large

Phone Barrier Box (81V)
Use with Phone V1 module. Includes an RJ45 to RJ11 cable and a functional earth lead.

700293897

Phone Barrier Box V2 (101V)
Use with Phone V2 module. Includes an RJ45 to RJ11 cable and a functional earth lead.

700385495

Barrier Box Rack Mounting Kit

700293905