255-700-019
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PacketStar
™
PSAX 20 Access Concentrator User Guide
, Issue 1
Release 6.3.0
Chapter 3 System Features
DS3 ATM Module
DS3 ATM Module
The DS3 ATM module provides a network interface at Digital Signal Level 3
(DS-3), with a line rate of 44.736 Mbps. This module accommodates ATM cell-
bearing traffic. Typically, this module is used to connect the Access
Concentrator system to an ATM edge switch. The DS3 ATM module has three
types of LED indicators: FAIL, ACTIVE, and LOS (loss of signal).
Software Features
The DS3 ATM module uses ATM Forum specifications UNI 3.0 or UNI 3.1,
which allows either DS-3 port to act as a user network interface (UNI), an
interim inter-switch protocol (IISP) user or IISP network interface, or as a
PNNI network interface to an ATM network.
The software supports the following ATM Forum Technical Committee
Specifications:
•
User-to-Network Interface Specification Version 3.0
, af-uni.0010.001
•
User-to-Network Interface Specification Version 3.1
, af-uni.0010.002
•
Interim Inter-switch Signaling Protocol, Version 1.0,
af-pnni-0026.000
•
Private Network-Network Interface (PNNI), Version 1.0,
af-pnni-0055.000
•
Integrated Local Management Interface Specification Version 4.0,
af-ilmi-0065.000
Hardware Features
•
Number of ports: two
•
Connector type: four BNC connectors for the two ports (each port has
one receive connector and one transmit connector)
•
Line rate: 44.736 Mbps (typical)
DS3 Frame Relay Module
The DS3 Frame Relay module provides an unchannelized, high-speed frame
relay network interface at Digital Signal Level 3 (DS3), with a line rate of
44.736 Mbps. Typically, the DS3 module is used to connect the Access
Concentrator system to an ATM edge switch. The module has three types of
light-emitting diode (LED) indicators: FAIL, ACTIVE, and LOS (loss of signal).
Software Features
The software supports the following Frame Relay Forum (FRF)
Implementation Agreements:
•
FRF.1—User-to-Network Interface (UNI)
Summary of Contents for PacketStar PSAX 20
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