3.1 OMCI Protocol
This topic describes the principles of the OMCI protocol and how to set up an OMCI channel.
3.1.1 Principles of the OMCI Protocol
This topic describes the principles of the OMCI protocol.
3.1.2 Setting Up an OMCI Channel
This topic describes how to set up an OMCI channel.
3.1.1 Principles of the OMCI Protocol
This topic describes the principles of the OMCI protocol.
The optical network termination management and control interface (OMCI) protocol is defined
in ITU-T Recommendation G.984.4. OMCI defines the format and the mechanism of the
messages exchanged between the OLT and the ONT. OMCI also analyzes the service model of
the ONT at a finer grain and defines a series of management entities used for service description.
OMCI specifies the format of the messages exchanged between the OLT and the ONT and the
mechanisms of confirmation and retransmission. In this way, OMCI provides a logical channel
for communication. Enabled with OMCI, the OLT supports the management and configuration
of various types of ONTs, the offline configuration of ONTs, and the configuration recovery of
online ONTs. Based on this mechanism, the ONT need not save the configuration information
locally. This helps to provision services and maintain the terminal.
3.1.2 Setting Up an OMCI Channel
This topic describes how to set up an OMCI channel.
Context
The process of setting up an OMCI channel between the OLT and the ONT is performed
automatically and requires no manual operation.
Procedure
Step 1
After being powered on, the ONT interacts with the OLT through Physical Layer OAM
(PLOAM) messages to complete the registration.
Step 2
From the PLOAM messages, the OLT learns whether the ONT supports the OMCI protocol. If
the ONT supports the OMCI protocol, an OMCI channel is set up between the OLT and the
ONT.
Step 3
After the OMCI channel is set up, the OLT issues the configuration and management information
about the ONT to the ONT through the OMCI channel, and the ONT uploads its status and alarm
information to the OLT through the OMCI channel.
NOTE
l
The PLOAM protocol is defined in ITU-T Recommendation G.984.3 and is used for the operation,
maintenance, and management at the physical layer.
l
OMCI is a master-slave management protocol. The OLT functions as the master device and the ONT
as the slave device. The OLT controls multiple ONTs through the OMCI channel.
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3 Configuration Guide
EchoLife HG8240/HG8245/HG8247 GPON Terminal
Service Manual
3-2
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2011-01-26)