PacketStar
™
PSAX 20 Access Concentrator User Guide
, Issue 1
Release 6.3.0
255-700-019
2-1
2
Hardware Description
Overview of This Chapter
This chapter presents an overview of the PSAX 20 Access Concentrator
system hardware.The content is organized as follows:
•
Overview of This Chapter
•
PSAX 20 System Hardware Components
~
PSAX 20 Chassis
~
The Central Processing Unit (CPU) Component
~
The 3–4 Stratum Component
•
PSAX 20 Hardware Specifications
•
PSAX 20 Environmental Specifications
•
PSAX 20 Physical Interface Specifications
PSAX 20 System Hardware Components
The following hardware components make up the PSAX 20 system:
•
Chassis—mounted in a standard 48.26-cm (19-inch) rack or a telco
frame, or placed on a shelf or table
•
Factory-installed components:
~
Central Processing Unit (CPU) component
~
Power Supply component
~
Stratum 3–4 clock timing component
~
T1/E1 component
~
DSP2B component
•
User-selected input/output (I/O) and server modules:
~
Alarm module
~
Channelized DS3 module
~
DS1 IMA module
~
DS3 module—three types available:
•
ATM
•
Frame Relay
•
IMA
~
E3 ATM module
~
Enhanced DS1 module
Summary of Contents for PacketStar PSAX 20
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