Avaya IP500 V2 Operations Instructions download pdf (Page 44)

Installing IP500/IP500 V2 Page 44

15-601042 Issue 28g (11 October 2013)IP Office 9.0

1.10.5 Grounding

All IP Office control units and external expansion modules must be connected to a functional ground. Where the unit is

connected to a power outlet using a power cord with an earth lead, the power outlet must be connected to a protective

earth.

Use of ground connections reduces the likelihood of problems in most telephony and data systems. This is especially

important in buildings where multiple items of equipment are interconnected using long cable runs, for example phone

and data networks.

In some cases, such as ground start trunks, in addition to being a protective measure, this is a functional requirement for

the equipment to operate. In other cases it may be a locale regulatory requirement and or a necessary protective step,

for example areas of high lightning risk.

· WARNING

During installation do not assume that ground points are correctly connected to ground. Test ground points before

relying on them to ground connected equipment.

The ground point on IP Office control units and external expansion modules are marked with a or symbol. Ground

connections to these points should use a 14 AWG solid wire with either a green sleeve for a functional ground or green

and yellow sleeve for a protective ground.

· Additional protective equipment

In addition to grounding, additional protective equipment will be required in the following situations. Refer to "Out

of Building Telephone Installations ".

· On any Digital Station or Phones external expansion module connected to an extension located in another

building.

· In the Republic of South Africa, on all Analog Trunk external expansion modules (ATM16) and on any control

units containing an analog trunk cards (ATM4/ATM4U).

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Avaya IP500 V2 Operations Instructions Page 44