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Figure 2-9
Ports on the side panel of the HG8247
Table 2-6
Descriptions of the ports on the side panel of the HG8247
Port and Button
Function
BBU
Indicates the external backup battery monitoring port, used for
connecting to the backup battery for monitoring the battery.
USB
Indicate the USB host port, used for connecting to a USB
storage device.
WLAN
Indicates the WLAN button, used for enabling or disabling the
WLAN function.
WPS
Indicates the WLAN data encryption switch.
RESET
Indicates the reset button. Press the button for a short time to
reset the device; press the button for a long time (longer than
10s) to restore the device to the default settings and reset the
device.
2.1.3 LEDs
This topic provides the appearance of the LEDs on the HG8240/HG8245/HG8247 and describes
the indications of these LEDs.
Figure 2-10
,
Figure 2-11
and
Figure 2-12
show the LEDs on the HG8240, HG8245 and
HG8247 respectively.
EchoLife HG8240/HG8245/HG8247 GPON Terminal
Service Manual
2 System Overview
Issue 02 (2011-01-26)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2-9
Page 32 / 232
Figure 2-10
LEDs on the HG8240
2 System Overview
EchoLife HG8240/HG8245/HG8247 GPON Terminal
Service Manual
2-10
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Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2011-01-26)
Page 33 / 232
Figure 2-11
LEDs on the HG8245
Figure 2-12
LEDs on the HG8247
EchoLife HG8240/HG8245/HG8247 GPON Terminal
Service Manual
2 System Overview
Issue 02 (2011-01-26)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2-11
Page 34 / 232
Table 2-7
Indications of the LEDs on the HG8240/HG8245/HG8247
Silk Screen
Name
Status
Indication
POWER
Power supply
LED
Green: always on
The device is powered on.
Orange: always
on
The device is powered by the
backup battery.
Off
The power supply is cut off.
PON
Authentication
LED
See
Table 2-8
.
LOS
Connection
LED
See
Table 2-8
.
LAN1-LAN4
Ethernet port
LED
Always on
The Ethernet connection is in the
normal state.
Blinks
Data is being transmitted on the
Ethernet port.
Off
The Ethernet connection is not set
up.
TEL1-TEL2
Voice telephone
port LED
Always on
The connection to the voice server
is set up.
Blinks quickly
(twice per
second)
The connection to the voice server
is set up and the telephone is in the
off-hook or ringing state.
Blinks slowly
(once two
seconds)
The ONT is registering with the
voice server.
Off
The connection to the voice server
is not set up.
USB
USB port LED
Always on
The USB port is connected and is
working in the host mode, but no
data is being transmitted.
Blinks quickly
(twice per
second)
Data is being transmitted on the
USB port.
Off
The system is not powered on or the
USB port is not connected.
WLAN
WLAN port
LED
Always on
The WLAN function is enabled.
Blinks
Data is being transmitted on the
WLAN port.
2 System Overview
EchoLife HG8240/HG8245/HG8247 GPON Terminal
Service Manual
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Copyright © Huawei Technologies Co., Ltd.
Issue 02 (2011-01-26)
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Silk Screen
Name
Status
Indication
Off
The WLAN function is disabled.
WPS
WPS port LED
Always on
The WPS function is enabled.
Blinks
A Wi-Fi terminal is accessing the
system.
Off
The WPS function is disabled.
CATV
CATV port LED
Always on
The CATV function is enabled and
CATV signals are received.
Off
The CATV function is disabled or
CATV signals are not received.
Table 2-8
Indications of PON and LOS LEDs
No.
LED Status
Indication
PON
LOS
1
Off
Off
The ONT is disabled by the OLT.
2
Blinks quickly
(twice per
second)
Off
The ONT is attempting to set up a
connection to the OLT.
3
Always on
Off
The connection between the ONT
and the OLT is set up.
4
Off
Blinks slowly
(once two
seconds)
The Rx optical power of the ONT is
lower than the optical receiver
sensitivity.
5
Blinks quickly
(twice per
second)
Blinks quickly
(twice per
second)
The OLT detects that the ONT is a
rogue ONT.
2.2 Typical Network Applications
This topic describes the typical network applications of the HG8240/HG8245/HG8247.
As a network terminal, the HG8240/HG8245/HG8247 is deployed at the GPON access layer
and connects home users and SOHO users to the Internet through optical upstream ports. On the
local area network (LAN) side, the HG8240/HG8245/HG8247 provides abundant hardware
ports to meet various network requirements of home users and SOHO users.
Network Topology of the HG8240
Figure 2-13
shows the position of the HG8240 in a network.
EchoLife HG8240/HG8245/HG8247 GPON Terminal
Service Manual
2 System Overview
Issue 02 (2011-01-26)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
2-13

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