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Page 25 of 894

Overview

Contents

This section contains information on the following topics:

 

Line cards

26

Installation

28

Operation

29

Analog line interface units

35

Digital line interface units

38

Analog line call operation

40

Digital line call operation

44

Lineside T1 call operation

44

Voice frequency audio level

55

Off-premise line protection

55

Line protectors

55

Line protection grounding

56

Line and telephone components

57

Trunk cards

57

Host interface bus

61

Trunk interface unit

67

Serial Data Interface (SDI) cards

70

Uses

71

Features

71

Specifications

72

Installation

74

Maintenance

74

Circuit Card Description and Installation

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Nortel Networks 553-3001-211 manual Overview, Contents