Item Specification
Maximum power (8b)
l Static: 23 W
l Maximum: 79 W
NOTE
The power consumption of the subrack is tested in the following conditions:
l -53.5 V DC
l Ambient temperature of 25°C
l Static power consumption: power consumption of the powered-on equipment with no load (all user
ports are deactivated)
l Maximum power consumption: power consumption of the powered-on equipment with full services
l In the case of Access device, power consumption is generally transformed into heat consumption.
Hence, heat consumption (BTU/h) and power consumption (W) can be converted to each other in
the formula: 1 BTU/h = 0.2931 W.
2.4.3 Function
The MA5623AR extended subrack can be considered as the extension service board for the
primary subrack of the MA5600T/MA5603T. The primary subrack manages the MA5623AR
extended subrack in the same way as it manages its service boards. The MA5623AR extended
subrack provides the same functions as the VDSL2 board of the primary subrack. It connects
to the ETHB board through the GE upstream port, cascading the primary subrack.
The MA5623AR extended subrack supports the following functions:
l 48-channel VDSL2 access service.
l Vectoring.
l Port protection
l 2-pair VDSL2 bonding when the 8a, 8b, 8c, or 8d profile is used.
l Single-ended loop test (SELT)
l Metallic loop test (MELT)
l VDSL2 8a, 8b, 8c, 8d, 12a, 12b, and 17a profiles
l G.992.1 Annex A, G.992.3 Annex A/B/L/M, G.992.5 Annex A/B/M, G.993.2 Annex
A/B
l G.INP physical layer retransmission
NOTE
In bonding mode, the G.INP physical-layer retransmission is not supported.
l Temperature query and high-temperature alarm
l Automatic power shutdown in case of a high temperature
Figure 2-16 shows the external connections of the MA5623AR extended subrack.
NOTE
The MA5623AR extended subrack supports –48/–60 V DC and 220 V AC input power. The
MA5623AR extended subrack that supports 220 V AC input power is used as an example in the
following figure.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Hardware Description
2 Subrack and Chassis
Issue 24 (2018-07-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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