Figure 1-46 External connections of the AC-powered cabinet installed with two MA5603T
chassis (underfloor cabling)
1.2.11 Heat Dissipation
This topic describes the ventilation of the N66E-18 cabinet.
The N66E-18 cabinet has a fan tray at the top of the service subrack to exhaust hot air for heat
dissipation.
NOTE
The following uses the MA5600T ETSI service subrack configured in the N63E-22 cabinet as an
example to describe the ventilation principles. When the MA5603T chassis is configured in the
N63E-22 cabinet, the air enters the cabinet from the left side and is exhausted from the right side.
The ventilation of the N66E-18 cabinet is as follows: Cool air enters the cabinet through the
cable space at the bottom of the service subrack. The air is exhausted by the fans upward
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
1 Cabinet
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
54