
PacketStar
®
PSAX 3-Port DS3/E3 ATM Protection Module User Guide
, Issue 1
Release 10.0.0
255-700-585
2-1
2
Module Description
Overview of the Module
The 3-Port DS3/E3 ATM Protection module (see Figure 2-1) provides 1:1
traffic protection for ATM services when connected to a LIM3–1 module in
the PSAX 1000 chassis and N:1 traffic protection for ATM services when con-
nected to a LIM3–4 module in the PSAX 4500 chassis. In addition to its traffic
protection capabilities, this module provides the same functionality as the
3-Port DS3/E3 ATM module (model 23N74): ATM service, including ATM
UNI 3.0, 3.1, and 4.0; ATM IISP user and network; and ATM PNNI 1.0 inter-
faces. It is software configurable to function in either the DS3 or the E3
mode, enabling you to deliver DS3 or E3 configurations while maintaining
inventory of a single module type. The three high-speed ATM network inter-
faces operate at DS3, with a line rate of 44.736 Mbps, or at E3, with a line
rate of 34.368 Mbps. Each port can be configured for ATM service, including
ATM UNI 3.0, 3.1, and 4.0; ATM IISP user and network; and ATM PNNI 1.0
interfaces.
l
The 3-Port DS3/E3 ATM Protection module has four types of LED indicators:
FAIL, ACTIVE, STBY, and LOS (loss of signal). See Figure 2-1 for an illustra-
tion of this module.
Figure 2-1. 3-Port DS3/E3 ATM Protection Module
ACTIVE
FAIL
LOS 1
DS3/E3
ATM
LOS 2
LOS 3
STBY
Содержание PacketStar PSAX 45N74
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