System Preparation and Configuration
1-4
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Section 1: Installation Basics
DS1000 Hardware Manual
Single Line Telephone REN Limitations
Please note the following when installing single line telephones:
●
The total Ringer Equivalence Number (REN) per system cannot exceed 4.
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The total REN per analog port cannot exceed 4.
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Ringer Equivalence is cumulative.
By default, all analog telephones ring simultaneously for outside calls (as do all analog telephones con-
nected to the same port). This means you must add up all analog telephones connected to the system (includ-
ing all those connected to the same port) and ensure that the total combined REN is 4 or less.
Note:
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.
Summary of Contents for DS1000
Page 6: ...Table of Contents iv Table of Contents DS1000 Hardware Manual...
Page 20: ...The Extension Block 2 4 Section 2 Trunk and Extension Cabling DS1000 Hardware Manual...
Page 42: ...Keyset Self Test 4 18 Section 4 Optional Equipment DS1000 Hardware Manual...
Page 58: ...Parts List 6 8 Section 6 Specifications and Parts DS1000 Hardware Manual...
