ELTEX NTU-1 User manual

NTU-1
User manual, version 1.1 (22 May 2017)
Optical Network Terminals
IP address: http://192.168.1.1
User name: user
Password: user

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2NTU-1 Optical Network Terminals
Firmware version
NTU-1 3.24.1.232
Document version
Issue date
Content of changes
1.0
20 August 2015
First issue
1.1
22 May 2017
Second issue
NOTES AND WARNINGS
The notes contain important information, tips or recommendations on device operation and setup.
Warnings are used to inform users about harmful situations for the device and the user alike, which
could cause malfunction or data loss.

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NTU-1 Optical Network Terminals 3
TABLE OF CONTENTS
NOTES AND WARNINGS...............................................................................................................................................................2
1 INTRODUCTION.........................................................................................................................................................................4
2 DEVICE DESCRIPTION ................................................................................................................................................................5
2.1 Application ........................................................................................................................................................................5
2.2 Device Specification ..........................................................................................................................................................6
2.3 Key Specifications..............................................................................................................................................................7
2.4 Design................................................................................................................................................................................8
2.5 Light Indication................................................................................................................................................................10
2.7 Reboot and Reset to Factory Settings.......................................................................................................................10
2.8 Delivery Package .......................................................................................................................................................10
3 NTU CONFIGURATION THROUGH WEB INTERFACE. USER ACCESS........................................................................................11
3.1. The Status menu. Information about the device status ...........................................................................................12
3.1.1. The Device submenu. Device General Information.............................................................................................12
3.1.2. The PON submenu. Information about the optical module status .....................................................................12
3.2. The LAN menu. LAN Interface Settings .....................................................................................................................13
3.3. The Admin menu. Administration Settings ...............................................................................................................13
3.3.1 The GPON Settings submenu. Settings GPON-network Access.....................................................................13
3.3.2 The Commit/Reboot submenu. Commit changes and rebooting the device ................................................14
3.3.3 The Password submenu. Access Control Configuration (password settings) ................................................14
3.3.4 The Firmware Upgrade submenu. Firmware Update ....................................................................................14
3.4. Statistics menu..........................................................................................................................................................15
3.4.1 The Interface submenu. Network Interface statistics ...................................................................................15
3.4.2 The PON submenu. PON-interface statistics .................................................................................................15
APPENDIX A –POSSIBLE PROBLEMS AND OPTIONS FOR THEIR SOLUTION ..........................................................................17
ACCEPTANCE CERTIFICATE AND WARRANTY.............................................................................................................................18

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4NTU-1 Optical Network Terminals
1INTRODUCTION
A GPON is a network of passive optical networks (PON) type. It is one of the most effective state-of-the-
art solutions of the last mile issue that enables cable economy and provides information transfer downlink rate
up to 2.5 Gbps and uplink rate up to 1.25 Gbps. Being used in access networks, GPON-based solutions allow end
users to have access to new services based on IP protocol in addition to more common ones.
The key GPON advantage is the use of one optical line terminal (OLT) for multiple optical network
terminals (ONT). OLT converts Gigabit Ethernet and GPON interfaces and is used to connect a PON network with
data communication networks of a higher level. ONT is designed to connect terminal equipment of user to
broadband access services. ONT can be used in residential estates and offices.
The range of ONT NTU equipment produced by Eltex comprises of the following terminals:
–NTU-1 with one Ethernet user network interfaces (UNI) –1 Ethernet 10/100/1000 Base-T;
–NTU-2V with two Ethernet user network interfaces (UNI) –1 Ethernet 10/100 Base-T port, 1 Ethernet
10/100/1000 Base-T port –and one FXS port;
–NTU-RG-1402G-W, which are designed to support four UNI: 10/100/1000Base-T, FXS, Wi-Fi, and USB.
The Operation Manual describes application, key specifications, configuration, monitoring, and software
retrofit for NTU-1 optical terminals.

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NTU-1 Optical Network Terminals 5
2DEVICE DESCRIPTION
2.1 Application
NTU-1 GPON ONT (Gigabit Ethernet Passive Optical Network) devices represent high-performance
network terminals designed for connection with upstream GPON equipment and providing end user with
broadcast access services. GPON connection is established through the PON interface, while Ethernet interfaces
are used for connection of terminal equipment. A distinctive feature of the NTU-1 user terminal is the ability to
supply power through the twisted pair cable in an Ethernet network (distance up to 40 meters).
The key GPON advantage is the optimal use of bandwidth. The technology is the next step of high-speed
Internet applications for home and office. Being designed for home or office network deployment, these ONT
devices provide users, who live and work in distant flat buildings and business centers, with reliable connection
with high throughput at large distances.
NTU-1 devices are designed to support various interfaces and features (see Table 1).
Table 1 –NTU-1 interfaces
Model Name
WAN
LAN
FXS
Wi-Fi
USB
NTU-1
1xGPON
1х1Gigabit
-
-
-

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6NTU-1 Optical Network Terminals
2.2 Device Specification
The device has the following interfaces:
–1 PON SC/APC port for connection to operator's network.
–1 Ethernet RJ-45 LAN ports for connection of network devices.
The terminal uses an external adapter for 220 V / 12 V power supply. It is also possible to power the device
via the Ethernet-cable UTP CAT-5E (when using GRT-120100A power supply), the maximum distance - 40
meters.
The device supports the following functions:
Network functions:
–bridge mode;
–QoS;
–IGMP-snooping.
Firmware update via web interface, OMCI.
Remote monitoring, configuration, and setup via OMCI.
Fig. 1 shows a diagram of the NTU equipment connection.
Fig. 1 –Connection of NTU-1

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NTU-1 Optical Network Terminals 7
2.3 Key Specifications
Table 2 lists key specifications of the terminals.
Table 2–Key Specifications
Parameters of Ethernet LAN Interface
Number of interfaces
1
Socket
RJ-45
Data rate, Mbps
Autodetection, 10/100/1000 Mbps,
duplex/half-duplex
Supported standards
IEEE 802.3i 10Base-T Ethernet
IEEE 802.3u 100Base-TX Fast Ethernet
IEEE 802.3ab 1000Base-T Gigabit Ethernet
IEEE 802.3x Flow Control
IEEE 802.3 NWay auto-negotiation
Parameters of PON Interface
Number of PON interfaces
1
Supported standards
ITU-T G.984.x Gigabit-capable passive optical networks (GPON)
ITU-T G.988 ONU management and control interface (OMCI)
specification
FSAN Class B+
SFF-8472
IEEE 802.1Q Tagged VLAN
IEEE 802.1p Priority Queues
IEEE 802.1D Spanning Tree Protocol
Connector type
SC/APC
according to ITU-T G.984.2
Transmission medium
fibre optical cable SMF-9/125, G.652
Splitting ratio
up to 1:64
Maximum range of coverage
20 km
Transmitter:
1310 nm
Upstream connection speed
1244 Mbps
Transmitter power
from +0.5 to +5 dBm
Optical spectrum width (RMS)
1 nm
Receiver
1490 nm
Downstream connection speed
2488 Mbps
Receiver sensitivity
-28 dBm
Receiver Optical Overload
-4 dBm
Control
Local control
web interface
Remote control
OMCI
Firmware update
OMCI, HTTP
Access restriction
password
General parameters
Power supply
–12 V DC /220 AC power adapter;
–Remote power on the Ethernet-cable UTP CAT-5E (up to 40m)1
Power consumption
5 W max.
Operating temperature range
from +5 to 40°C
1When using the power supply GRT-120100A

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8NTU-1 Optical Network Terminals
Relative humidity
up to 80 %
Dimensions
112x100x32 mm
Weight
0,25 kg
2.4 Design
NTU-1 devices are designed as a 112×100×32 mm desktop device in a plastic housing.
Fig. 2 shows NTU-1 rear panel.
Fig. 2 –NTU-1 Rear Panel
Connectors and controls located on the rear panel of NTU-1 are listed in Table 3.
Table 3 –Description of LEDs and Controls Located on the Rear Panel
Rear Panel Element
Description
1
12V
Power adapter connector
2
10/100/1000
RJ-45 10/100/1000Base-T port for connection of network devices
3
PON
SC port (socket) for connection to PON with GPON interface

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NTU-1 Optical Network Terminals 9
Fig. 3 shows a NTU-1 side and top panels.
Fig. 3 –NTU-1 Top and Side Panel
Controls and LED indicators located on the NTU-1 side and top panels are listed in Table 4.
Table 4 –Description of LEDs and Controls Located on the Side and Top Panels
Panel Element
Description
4
Power
power on indicator
5
Status
device authentication indicator
6
Link Act.
Ethernet ports indicator
7
Speed
Ethernet-port connection speed indicator
8
PON Link
optical interface indicator
9
PON Alarm
connection with the station indicator optical terminal
10
Reset
a functional key that reboots the device and resets it to factory settings

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10 NTU-1 Optical Network Terminals
2.5 Light Indication
The Power, Status, Link Act., Speed, PON Link, PON Alarm, Reset indicators located on the top panel
show the device current status.
Table 5 lists possible statuses of the LEDs.
Table 5 –Light Indication of Device Status
LED
LED Status
Device Status
Power
off
device is disconnected from the power source or faulty
Status
off
during loading device or a default configuration
orange
the process of getting configuration by OMCI
red
an error in the configuration process by OMCI
green
OMCI configuration is completed successfully, the device is working properly
Link Act.
off
there is no connection to the LAN-port
green
established LAN connection
flashes
Data transmission process
Speed
off
there is no connection to the LAN-port
orange
established 1000 Mbps connection
green
established 10/100 Mbps connection
PON Link
off
no signal from optical line terminal
flashes slowly
device is not registered on optical line terminal
flashes rapidly
transferring data packets
green
a connection between the station and the optical terminal device
PON Alarm
off
a connection between the station and the optical terminal device
red
no signal from optical line terminal
2.7 Reboot and Reset to Factory Settings
For device reboot, press the Reset button once on the device side panel. In order to reset the device to
factory settings, press the Reset button and gold it for 7-10 seconds until the POWER LED glows red. Factory
settings for IP address are: LAN –192.168.1.1, subnet mask –255.255.255.0.
2.8 Delivery Package
The standard delivery package of NTU-1 includes:
–NTU-1 optical network terminal;
–220V/12V power adapter;
–Operation Manual.

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NTU-1 Optical Network Terminals 11
3NTU CONFIGURATION THROUGH WEB INTERFACE. USER ACCESS
Device configuration requires access to the device by using a web browser (a program for hypertext
documents displaying) such as Firefox or Google Chrome. Enter the device IP address in the browser address bar
to do this (enter IP-192.168.1.1 and subnet mask –255.255.255.0 if you have a factory settings).
When the address is entered, the device requires user to log in.
User name: user, password: user.
In order to prevent unauthorised access to the device, the password is recommended to be changed (see
section (3.3.3).
A general view of the web-configuration device window is shown below. There are a navigation tree for
object settings on the left pane and the settings editor on the right.

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12 NTU-1 Optical Network Terminals
3.1.The Status menu. Information about the device status
3.1.1. The Device submenu. Device General Information
The tab displays the current status and some basic device settings.
System- (system parameters):
–Alias Name;
–Uptime–operation time from the last device reboot;
–Firmware Version- software version.
LAN Configuration (LAN configuration interface):
–IP Address –device address in local network;
–Subnet Mask-subnet mask;
–DHCP server –DHCP-server usage status (enabled - Dynamic IP-addresses, disabled - Static IP-addresses);
–MAC Address –device MAC address.
Click the Refresh button to refresh the information.
3.1.2. The PON submenu. Information about the optical module status
This tab contains detailed information about the PON interface.

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NTU-1 Optical Network Terminals 13
–Vendor Name –manufacturing company name of the optical module;
–Part Number –optical module model;
–Temperature –optical module temperature, °C;
–Voltage –supply voltage, V;
–Tx Power –transmitted signal level (1310 nm), dBm;
Rx Power –received signal level (1490 nm), dBm;
–Bias Current –bias current, mA.
Click the Refresh button to refresh the information.
3.2.The LAN menu. LAN Interface Settings
Use the tab shown below to configure basic LAN interface settings (for example, IP-addresses, subnet
mask and other parameters)
–Interface Name;
–IP Address –device address in local network;
–Subnet mask;
–IGMP Snooping –turn on/off (enabled/disabled) IGMP Snooping function to monitor network multicast
traffic.
Click Apply Changes button to accept changes.
3.3.The Admin menu. Administration Settings
3.3.1 The GPON Settings submenu. Settings GPON-network Access
The tab is used to configure the parameters of the GPON network access.
–LOID1–logical object identifier (user name in the GPON);
–LOID Password1–access password with a logical ID (user password in the GPON network);
–PLOAM Password –access password settings on the physical layer for work, terminal management and
technical terminal services;
–Serial Number –PON serial device number.
1Not used

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14 NTU-1 Optical Network Terminals
To accept changes, click Apply Changes button.
It's strongly discouraged to modify configurations from this menu by your own forces. It may cause
loss of connection to the station device!
3.3.2 The Commit/Reboot submenu. Commit changes and rebooting the device
This tab is used to commit changes to system memory and reboot your system.
Click Commit and Reboot button to commit changes and reboot the device. Reboot can take a few
minutes.
3.3.3 The Password submenu. Access Control Configuration (password settings)
Use the tab to change device access passwords.
For password changing, select a username, enter the current and new passwords and then confirm new
passwords.
Empty user name and password will disable the protection.
Click Apply Changes button to accept and save changes and Reset button to cancel.
3.3.4 The Firmware Upgrade submenu. Firmware Update
This tab allows you to update your device firmware.
To update firmware, choose the firmware file in Software File name row (by Select File button) and click
Update.If you selected an incorrect file, you can delete it by Reset button.

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NTU-1 Optical Network Terminals 15
Do not disconnect the device from the power supply or reboot it during firmware updates. The
firmware update can take a few minutes after which the device will be rebooted automatically.
3.4. Statistics menu
3.4.1 The Interface submenu. Network Interface statistics
This page shows the packet statistics for transmission and reception regarding to network interface.
–Interface –network interface name
–Rx pkt –received packets;
–Rx err –received packets with errors;
–Rx drop –dropped packets during receiving;
–Tx pkt –transmitted packets;
–Tx err –transmitted packets with errors;
–Tx drop –dropped packets during transmitting.
Click the Refresh button to refresh information and click the Reset Statistic button to reset statistics.
3.4.2 The PON submenu. PON-interface statistics
This tab displays the statistics of received and transmitted packets for the PON interface.
–Bytes Sent –number of the transmitted bytes;
–Bytes Received –number of the received bytes;
–Packets Sent –number of the transmitted packets;
–Packets Received –number of the received packets;
–Unicast Packets Sent –number of the transmitted unicast packets;
–Unicast Packets Received –number of the received unicast packets;
–Multicast Packets Sent –number of the transmitted multicast packets;
–Multicast Packets Received –number of the received multicast packets;
–Broadcast Packets Sent –number of the transmitted broadcast packets;
–Broadcast Packets Received –number of the received broadcast packets;

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16 NTU-1 Optical Network Terminals
–FEC Errors –number of the errors corrected by the FEC (Forward Errorr Correction);
–HEC Errors –number of the detected checksum errors in the packet headers by the HEC (Header Error
Checksum);
–Packets Dropped- number of the dropped packets;
–Pause Packets Sent –number of the transmitted PAUSE-packets to adjust the bit rate;
–Pause Packets Received –number of the received PAUSE-packets to adjust the bit rate.

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NTU-1 Optical Network Terminals 17
APPENDIX A –POSSIBLE PROBLEMS AND OPTIONS FOR THEIR SOLUTION
Problem
Possible Cause
Solution
Entering router's IP
address (e.g. 192.168.1.1)
could not access to the
web interface
The PC does not belong to
the IP subnetwork for
connection to the web
interface
Set the address from the 192.168.1.0/24 subnet in
the Internet connection options of your computer
Defective cable
Check the physical connection by checking of the
indicator status (all LEDs should be on). When the
LEDs are off, use another cable or connect to
another port of the device if it is possible. If your
computer is switched off, LEDs may also be off.
Access denied by your
firewall
Disable firewall on your computer
Forgotten/incorrect
password to the web
interface of the device
_________
Reset the router to default settings by using the F
button on the rear panel. Unfortunately, all made
settings will be lost in this case.

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18 NTU-1 Optical Network Terminals
ACCEPTANCE CERTIFICATE AND WARRANTY
NTU-1 Optical Network Terminal with serial number ____________________ satisfies the requirements of
technical specification TU6650-100-33433783-2013 and is classified as fit for operation.
The manufacturer, Eltex Ltd., guarantees that the subscriber gateway satisfies the requirements of
TU6650-100-33433783-2013 technical specification in case of customer adherence of the operation conditions
which are set in this Manual.
The warranty period is 1 year.
The device does not contain precious materials.
Director A. N. Chernikov
signature Name
Head of the Quality Control Department S. I. Igonin
signature Name