Chapter 4. Trunks and Lines
This chapter describes trunk and line installation. Some peripheral equipment
also requires trunk and/or line interfaces (for example, door phones or power
failure units). See Chapter 5 for instructions on connecting peripheral
equipment through trunks or lines.
This chapter covers the following topics::
Topic
Trunks
Page
Loop-S tart Trunks
I
Ground Start and DID
Interface
4-11
Lines
4-3 1
Analog Extensions
4-37
Digital Extensions
4-40
4-40
EM/24
4-42
Trunk and Line Expansion
4-43
DBS-70-300
DBS Manual Issued
4-l
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