Lucent Technologies PacketStar PSAX 45N74, Руководство пользователя

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255-700-585 2-11
PacketStar
®
PSAX 3-Port DS3/E3 ATM Protection Module User Guide
, Issue 1 Release 10.0.0
Chapter 2 Module Description
Module Placement
Module Placement
The 3-Port DS3/E3 ATM Protection module can be installed in either the
PSAX 1000 chassis or the PSAX 4500 chassis. In the PSAX 1000 chassis, this
module is installed in slot
4 as a working module and in slot 15 as a protec-
tion module. The working module must be physically connected at the chas-
sis midplane to a LIM3–1 module at a corresponding slot in the rear of the
chassis. See the
PSAX 1000 3-Port Line Interface Module Description and Specifica-
tions document for LIM3–1 module installation instructions.
The 3-Port DS3/E3 ATM Protection module is installed in either of two
groups in the PSAX 4500 chassis: group 1, in slots
3–8 as a working module
and slot 15 as a protection module; or group 2, in slots 9–12 as a working
module and slot 13 as a protection module. Each group must contain a mini-
mum of one working module and one protection module. Each working
module must be physically connected at the chassis midplane to a LIM3–4
module at a corresponding slot in the rear of the chassis. The 1:1 Protection
feature of this module functions only in this configuration. See the
PSAX 4500 3-Port Line Interface Module Description and Specifications document
for LIM3–4 module installation instructions.
LED Status Indicators
Table 2-3 describes how the light-emitting diode (LED) indicators on the
3-Port DS3/E3 ATM Protection module faceplate respond to different module
conditions. These LEDs indicate if the module has been installed properly.
Table 2-2. Performance and Power Specifications for the 3-Port DS3/E3 ATM Protection Module
Module
Total
Amount of
SDRAM
Module
Program and
Data Space
Maximum
Input
Buffer
*
Output
Buffer
†
Chassis
Speed
Maximum
Power
Consumption
45N74 3-Port
DS3/E3 ATM
Protection
72 MB 8 MB 32 MB 32 MB
(524,288)
High
Speed
12 W
*
The I/O buffers carry 16,384 cells per megabyte.
†
Indicates the size of the output buffer followed by the maximum number of 64-byte cells in the output
buffer.