NEC 1090025 Hardware Manual - Page 25

Installation, System Preparation, Unpacking, Before Installing, Site Requirements, Single Line - phones

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Installation Installation System Preparation System Preparation Unpacking Unpack the equipment and check it against your equipment lists. Inspect for physical damage. If you are not sure about a component's function, review Components (page 1). Contact your Sales Representative if you have additional questions. Have the appropriate tools for the job on hand, including: a test set, a punch down tool and a digital voltmeter. Before Installing Make sure you have a building plan showing the location of the common equipment, extensions, the telco demarcation and earth ground. In addition, the installation site must meet the requirements outlined in the Standard Practices Manual. Site Requirements The common equipment is contained in the wall-mounted Main Equipment Cabinet. Choose a central location for the cabinet that allows enough space for the equipment - and provides enough room for you to comfortably work. Figure 1: Installation Layout, DSX-40 (page 20) and shows you about how much space your system requires. Single Line Telephone REN Limitations Please note the following when installing single line telephones: ❥ The total Ringer Equivalence Number (REN) per system cannot exceed 10. ❥ The total REN per analog port cannot exceed 5. ❥ Ringer Equivalence is cumulative. ❥ A REN of 1 is the normal for an industry standard 2500 set with electromechanical ringer. Many phones with electronic ringers have significantly lower RENs. DSX-40 Hardware Manual Installation ◆ 19

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DSX-40 Hardware Manual
Installation
◆
19
Installation
Installation
System Preparation
System Preparation
Unpacking
Unpack the equipment and check it against your equipment lists. Inspect for physical damage. If you are not
sure about a component’s function, review
Components
(page 1). Contact your Sales Representative if you
have additional questions.
Have the appropriate tools for the job on hand, including: a test set, a punch down tool and a digital voltmeter.
Before Installing
Make sure you have a building plan showing the location of the common equipment, extensions, the telco
demarcation and earth ground. In addition, the installation site must meet the requirements outlined in the
Standard Practices Manual.
Site Requirements
The common equipment is contained in the wall-mounted Main Equipment Cabinet. Choose a central location
for the cabinet that allows enough space for the equipment — and provides enough room for you to comfortably
work.
Figure 1: Installation Layout, DSX-40
(page 20)
and shows you
about
how much space your system
requires.
Single Line Telephone REN Limitations
Please note the following when installing single line telephones:
❥
The total Ringer Equivalence Number (REN) per system cannot exceed 10.
❥
The total REN per analog port cannot exceed 5.
❥
Ringer Equivalence is cumulative.
❥
A REN of 1 is the normal for an industry standard 2500 set with electromechanical ringer. Many phones
with electronic ringers have signi
fi
cantly lower RENs.