Huawei ATN 950B Hardware Description page 51

ATN 950B Multi-service Access Equipment
Hardware Description
the services to the service processing module. The service processing module buffers the service
packets, schedules the packets, and finally outputs the packets through the backplane-side
interface.
Service Access Module
This module performs the following functions:
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Service Processing Module
This module performs the following functions:
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Management Module
This module is used with the CXP to manage and control each module on the EM8T.
Clock Module
This module performs the following functions:
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Power Supply Module
This module provides the DC power of the following specifications to each module on the EM8T.
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Issue 03 (2012-07-23)
In the receive direction, this module receives the GE/FE services from the interfaces on the
front panel, performs serial/parallel conversion and coding/decoding, and then sends the
services to the service processing module. .
In the transmit direction, this module receives the service packets from the service
processing module, performs coding/decoding, and serial/parallel conversion on the
packets, and then outputs the packets through the GE/FE interfaces on the front panel
This module extracts the synchronous Ethernet clock.
In the receive direction, this module receives and buffers the service packets from the
interface conversion module. Then, this module schedules packets from different
interfaces. Finally, this module outputs the packets through the backplane-side interface.
In the transmit direction, this module receives service packets from the AND1CXPA/
AND1CXPB, identifies the destination interfaces of the packets, and buffers and schedules
the packets based on the access capability of the EM8T and the access bandwidth setting
at each interface. Finally, this module outputs the packets to the service access module.
This module extracts and inserts IEEE 1588 V2 packets.
Provides the working clock for each module on the EM8T.
Supports the synchronous Ethernet and SSM protocols.
Supports the IEEE 1588 V2 protocol.
Supports the 1588 ACR clock.
3.3 V
3.0 V
2.5 V
1.8 V
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