ADC HRM-238 List 2, Руководство пользователя

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November 18, 2005 Chapter 1: Overview
LTPH-UM-1315-01 1-3
O
PERATIONAL
C
APABILITIES
Application
With two HMU-319 management units installed, the HRM-238 shelf provides network management for up to 56
HiGain line units.
Recommended Network Setup for 220-Type Shelves
The configuration shown in Figure 1-3 is the recommended setup for 220-type mechanics shelves. Up to four
220-type shelves can be managed with one HRM-238 shelf. Position the HRM-238 shelf between the 220-type
shelves, with up to two 220-type shelves above and two below. This limits the distance for the wire leads between
the connectors for the management units and the line units they manage.
Figure 1-3 shows the HRM-238 shelf from
the rear view with the A-side connectors on the right and the B-side connectors on the left. The leads from the
HRM-238 shelf connector attach to the Network Management Agent (NMA) pins on the rear of the 220-type
mechanics shelves for each line unit managed. The NMA pin on a 220-type chassis is
pin 46 .
Figure 1-3. Recommended Network Setup for 220-Type Shelves
HRM Shelf NMA 1 to 28 B Network B Network A
TB1
CO -48V
Supply
H0544-B
-48V A
HCS-417/418
(220-type shelf)
-48V A
-48V B
-48V B
NMA 1 to 14 B
(pin 46 of
each slot)
HCS-417/418
(220-type shelf)
NMA 15 to 28 B
(pin 46 of
each slot)
-48V A
HCS-417/418
(220-type shelf)
-48V A
-48V B
-48V B
HCS-417/418
(220-type shelf)
NMA 15 to 28 A
(pin 46 of
each slot)
NMA 1 to 28 A
NMA 1 to 14 A
(pin 46 of
each slot)