Lightning Protection/Out-Of-Building Connections - Avaya IP500 V2 Installation Manual

1.10.6 Lightning Protection/Out-of-Building Connections

The following are the only supported scenarios in which wired extensions and devices outside the main building can be
connected to the IP Office system. In these scenarios, additional protection, in the form of protective grounding and surge
protectors, must be fitted.
WARNING
·
The fitting of additional protection does not remove the risk of damage. It merely reduces the chances of damage.
· Cables of different types, for example trunk lines, phone extensions, ground and power connections, should be kept
separate.
· All cabling between buildings should be enclosed in grounded ducting. Ideally this ducting should be buried.
· A Primary Protection Box must be provided at the point where the cables enter 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.
Connection Type
Analog Phone Extensions
Phones External expansion
module (POT or PHONE
398
ports only.
DS Phone Extensions
TCM Phone Extensions
Analog Trunks
External Output Switch
The towerMAX range of devices are supplied by ITWLinx (http://www.itwlinx.com).
Installing IP500/IP500 V2
IP Office 9.0
Protection Device Type
IP Office Barrier Box
Supports a single connection.
) Maximum of 16 on any expansion
398
module.
ITWLinx towerMAX DS/2
Supports up to 4 connections. This
device was previously referred to
as the Avaya 146E.
None
ITWLinx towerMAX CO/4x4
Supports up to 4 two-wire lines.
This device was previously
referred to as the Avaya 146C.
ITWLinx towerMAX SCL/8
This device was previously
referred to as the Avaya 146G.
System Overview: Power Supplies and Cables
Requirement
· Connection from the expansion module to the
171
phone must be via a surge protector at each end
and via the primary protection point in each
building.
· The IP Office external expansion modules, control
unit and IROB devices must be connected to the
170
protective ground point in their building.
· The between building connection must be via
earthed ducting, preferable underground. The cable
must not be exposed externally at any point.
Currently not supported.
For installations in the Republic of South Africa, the
170
fitting of surge protection on analog trunks is a
requirement.
For other locations where the risk of lightning strikes
is felt to be high, additional protection of incoming
analog trunks is recommended.
Connections from an IP Office Ext O/P port to an
external relay device must be via a surge protector.
15-601042 Issue 28c (19 August 2013)
Page 45