13.3.5 Enterprise E1 Unified Access Service
ONUs transmit E1 signals of enterprises to OLTs in SAToP mode and OLTs are interconnected
with transmission equipment through E1 ports. In this manner, traditional circuit switching
services can be carried over GPON networks.
13.3.5.1 Service Requirement and Application Scenario
Service Requirement
l Existing SDH resources are utilized efficiently. In this way, carriers' existing investments
are protected and enterprise users in different regions are won.
l Services are received over optical fibers, reducing investment in copper cables between
enterprises and the SDH network.
l The standardized user-side ports facilitate deployment and maintenance.
Application Scenario
As shown in Figure 13-16, the ONU accesses enterprise E1 service through standardized
hardware ports, and transmits data to the OLT over the GPON line after performing structure-
agnostic time division multiplexing over packet (SAToP) encapsulation on the service. After
receiving the signals, the OLT restores E1 signals and transmits the signals to the SDH network.
l For carriers, with this networking, they can win enterprise users with GPON lines which
support long-distance transmission and high bandwidth. With the trend of fiber-in and
copper-out, deployment of GPON lines can reduce deployment costs of copper cables and
support service expansion.
l For enterprise users, with GPON access, they can reduce fees spent in leasing lines.
ONUs supporting this scenario: MA5612, MA5628, MA5616.
Figure 13-16 E1 access in SAToP mode
SDH
E1/
STM-1
OLT
ONU
Enterprise
Splitter
E1
TDM
E1 SAToP E1/STM-1
13.3.5.2 Configuration Process
The following figure shows the configuration process for E1/T1 enterprise private line.
SmartAX MA5600T/MA5603T/MA5608T Multi-service
Access Module
Commissioning and Configuration Guide
13 FTTO Configuration (Large-sized Enterprise Access)
Issue 01 (2014-04-30) Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
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