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Page 36 - Out of Building Telephone Installations Preparing for Installation
Page 36 - Preparing for Installation IP Office Installation Manual
Out of Building Telephone Installations 40DHB0002USCL – Issue 9 (28th October 2003)
Out of Building Telephone Installations
Installation of telephone and/or other standard (tip/ring) devices that are external to the
building housing the Avaya IP Office or in another building require In-Range-Out-Of-
Building (IROB) protectors to protect the control unit and device from electrical surges.
These must be fitted as follows:
- System telephone : two IROB protectors
- Standard telephone : two IROB protectors plus one carbon block protector.
Primary protection must be provided at the point where the cable enters the building. This
should be three point protection (tip, ring and ground). Typically this would be gas tube
protection provided by the local telephone company. The ground wire must be thick
enough to handle all the lines being affected by indirect strike at the same time.
CAUTION: All cabling between buildings must not be exposed. E.g. cabling between
buildings must be carried in suitably earthed ducting; ideally underground.
Three versions of IROBs are available as follows :
- 146C - Trunks - SAP code 407228923
- 146E - TDL - SAP code 407568161
- IP400 Phone Barrier Box - SAP code 700293897
Installation of a Contact Closure Adjunct controlled device outside the building requires a
146G Surge Protector – SCL/8 to protect the control unit from electrical surges.
Install the 146C and 146E IROBs as per the instructions supplied with the IROBs.
Avaya IP400 Phone Barrier Boxes must only be used in conjunction with UL Listed Avaya
IP400 Phone 8/16/30 modules.
Where more than three Avaya IP400 Phone Barrier boxes are to be used they must be
rack mounted (see page 37). For non-rack mounting of the Avaya IP400 Phone Barrier
Box, proceed as follows:
Notes: 1. The following wires must be kept apart, e.g. not routed in the same bundle:
- Earth lead from the barrier box to the IP400 Phone 8/16/30.
- Internal wires, e.g. wires going directly to the IP400 Phone 8/16/30.
- Wires from external telephone going directly to the barrier box(es).
2. The Avaya IP400 Phone Barrier Box will not connect the ringing capacitor in
the UK, hence a Master socket is required.
CAUTIONS: 1. The analogue ports on the front of the IP403 must not be used for lines
external to the building.
2. The Avaya IP400 Phone Barrier Box must not be connected to the
analogue trunk lines