Optical cable, due to its high data transfer rate, has enabled providers to provide subscribers with data transfer rates of up to 100 Mb / s or more. When this direction was born, many customers did not have network adapters capable of supporting such a data transfer rate. As a rule, providers install an optical router right in the apartment, or run an optical cable directly to the network card, sometimes a copper cable is used from the optical terminal, and naturally it becomes necessary to distribute WiFi throughout the apartment in order to connect tablets, phones, desktops to the Internet. Let's figure out what we should do in this case in order to distribute WiFi from fiber optics throughout the apartment. Here, I would advise you to first check with your provider if the terminal that was installed in your apartment has the ability to distribute WiFi, many terminals already have a router, and you just need to configure it. But if this is not possible, or only an optical cable is connected to the apartment, what to do in this situation, how to choose a router with WiFi for fiber optics and can you do without it?

Let's look at the main questions you may face:

1. An optical fiber has been installed, is it possible to connect a WiFi router to it?
2. Which router to choose for a speed of 100 Mb / s, which router supports this speed?
3. Is it possible to distribute WiFi from the term fiber without using a router, but for example from a laptop?

We will also briefly go over the main models on the Russian market.

How to connect to optics

In order to connect an optical cable to a router, it is necessary that the router has the appropriate port. Therefore, you immediately need to check with your provider which connection is used and what format your port is. you may encounter a problem, and the router you buy will not fit the type of connection with the provider. The connection itself, of course, is not a big problem. The WiFi router connects to the GPON terminal if it is installed in your apartment, but if there is only an optical cable, then we directly insert it into our router. I want to say a few words about the connection, since the connection is usually established from our computer, and the terminal or router of the provider that provides Internet access works in bridge mode (Brige). When you figure out what type of connection you have, you can proceed to the next step.

WiFi at 100 Mbps

Already, most modern routers are able to provide WiFi speeds up to 300 Mb / s. When choosing a router, you need to look at its following characteristics:

• Each of the routers indicates the data transfer rate for each port. The port that is for the incoming speed is called WAN, you also need to check the type of WAN port with the provider, the SFP port is a standard fiber port that supports speeds up to 1 Gb / s, which is equal to 1000 Mb / s.
• We also pay attention to the speed of the wireless interface - this is the speed over WiFi, it is necessary that it be no less than the speed provided by the provider.

The WiFi standard - IEEE 802.11b/g/n provides speeds up to 300 Mb/s. A router with a speed of up to 150 Mb / s is also suitable. Most routers can have multiple WAN ports, allowing them to connect to both copper cable and fiber. Let me give examples of such routers, I want to note that I do not give recommendations on their purchase, I just took the first ones I got from the Internet:

DIR-615/FB

Main characteristics:

• WiFi: 802.11b/g/n (300Mbps) frequency 2.4GHz;
• WAN: one SFP port 10-100 Mbps - optical cable;

Main characteristics:

• WAN up to 1000 Mbps;
• Copper port 10/100/1000;
• Connecting up to 4 devices, h via cable;
• 2 FXS ports - for phones;
• Maybe USB 2.0;

Price around 9 tr.

EchoLife HG-8240

Nothing different from the previous one. Price: 6-8 tr. Ali saw for 3.5 tr.

RT-N66U

The feature can issue WiFi connection speed up to 900 Mbps. The price is about 6 to 8 tr. But this router is not suitable for connecting an optical cable directly, and can only be used as a gateway, this router does not have a port for connecting PON optics.

We will not go into details further, I think the main features are clear here. Let's figure out what to do if you have optics installed in your apartment, but you cannot purchase a router, what are the ways to solve the problem?

WiFi from optics, without a router

This means the situation that you have had optics, connected to one and a computer, and that's it. The cable is thrown, there is no WiFi, the question arises of what to do if there is no money for a regular router. This is where smart programs come to the rescue, the fact is that a modern WiFi adapter, which is built into a laptop, tablet, phone or desktop computer, has the ability not only to receive incoming traffic from the Internet, but also to distribute it synchronously.

To distribute WiFi from a computer or laptop to which optics is connected, simply download the MyPublicWiFi program (May Public Wi-Fi). This program helps you simply and without problems to create a wireless access point from your computer, a couple of mouse clicks, and your computer turns into a router, and you can easily connect to the Internet from your mobile devices. How to configure this program I described in this article:

Many may find that they have a desktop computer without WiFi, but don't be discouraged, there is also a simple and cheap solution for this problem for you. All you need to do is buy a wireless WiFi adapter, this board with an antenna or a device that looks like a USB flash drive that is inserted into your computer, and you get the opportunity to connect, and distribute the Internet like a laptop, through this adapter.

I hope this article was useful for you, be sure to leave your opinion in our group in

Not so long ago used for high-speed data transmission. Previously, not every user could afford to install a separate terminal in his apartment that worked only for him.

In this regard, Internet providers “launched” an optical cable into an apartment building and connected it to a network module, and copper wires or twisted pairs that transmitted the information flow went from it to apartments. At the same time, the data transfer rate dropped significantly. But with the creation of FTTB connectors, the situation has changed dramatically.

for optical cable

Now every resident of the city can afford a separate fiber optic router. But at the same time, another question arose: how to transmit an Internet signal via Wi-Fi, for example, to connect a tablet, smartphone or laptop? To solve this problem, you need to buy a router with a built-in Wi-Fi module. But a wide range of products on the market can shock even an experienced user.

In order not to get lost in all the variety of devices, you need to determine what, in your understanding, means the best Wi-Fi router? Perhaps this is a combine that can easily provide high-speed Internet from a dozen devices? Or will it be a compact device with an optimal ratio of price, functionality and durability? To help you figure this out, let's define what parameters a fiber optic router with WiFi should have.

Ports and Bandwidth

Previously, when an optical cable was first brought into an apartment building, connected to a terminal, and only then transmitted an Internet signal to apartment owners, an FTTH port was used. Not so long ago, a new format was developed - FTTB, which allows you to connect optical fiber to a router located in your home. To connect directly to the router, two groups of ports are used - WAN and SFP.

The first group is the most common. Outwardly, the WAN port is a regular connection connector. However, before making a purchase, check with your ISP which type of WAN port is required for connection. A fiber optic router equipped with an SFP connector is suitable for connecting any cable, as it is a standard format.

When choosing a router with a WAN port, you need to make sure that the throughput is not lower than the signal speed that your operator guarantees you. Otherwise, you risk overpaying for the Internet. SFP connectors provide data reception at speeds up to 1 Gb / s and provide optimal throughput for any connection.

WiFi standards

Having chosen a router with high bandwidth, you need to decide on it, otherwise a situation will arise when the router can receive a high-speed signal, but it cannot distribute it to mobile devices via a Wi-Fi network.

Therefore, when purchasing a fiber optic router, make sure that the wireless interface standard matches one of the following:

• IEEE 802.11b - create a Wi-Fi network with a data transfer rate of up to 11 Mbps;
• IEEE 802.11g is a higher speed protocol providing speeds up to 54 Mbps;
• IEEE 802.11n is the most advanced standard in existence, transmitting a signal at speeds up to 300 Mbps.

When choosing a router in a store, you need to make sure that the Wi-Fi speed guaranteed by the device is not lower than the Internet speed that the operator provided you with. Now let's look at the most popular router models among customers.

D-Link-615 router series

D-Link is one of the leading suppliers to the domestic Internet equipment market. Its products are noted by users for the best value for money.

When choosing a fiber optic router for the first time, take a closer look at the DIR-615 model. A simple and intuitive interface simplifies setup. The radius of "distribution" of a Wi-Fi signal with a speed of up to 300 Mbps with two antennas will be enough to cover the entire area of ​​​​the apartment. There is a built-in IPTV function for watching interactive TV.

Another outstanding representative of the series is D-Link DIR-615/FB. The router is equipped with a WAN port and two antennas that provide signal distribution over a fairly large area at speeds up to 300 Mbps, it has a LAN connector for cable Internet connection.

D-Link routers for high speed internet

The D-Link DVG-N5402GF fiber optic router is one of the best, adapted for high-speed data transfer. It is equipped with 4 ports that provide signal reception at speeds up to 1 Gb / s, a WAN format connector. It has a Wi-Fi interface of the 802.11n standard, which causes data transfer at speeds up to 350 Mb / s. Two detachable antennas cover a large area.

The D-Link DIR-825/ACF router uses an SFP connector to receive data, thanks to which the Wi-Fi distribution speed reaches 1167 Mbps when up to 4 devices are connected to the network at the same time. USB interface can be used to connect MAC address filtering capability and advanced security protocols will protect your network from intrusion.

Routers from the provider

Some providers, when connecting a fiber optic cable, offer their own fiber optic router. Rostelecom, Beeline, MTS are well-known operators who supply their equipment at the time of subscription. However, the connection cost increases significantly. In order not to overpay, you can choose your router, because there is no difference from which manufacturer to use the device.

At the same time, it must be remembered that the parameters of the input signal correspond to the guaranteed data transfer rate. As the best option, we can recommend Mikrotik RB2011UAS-2HnD-IN with an impressive appearance and original design.

An alternative could be Huawei EchoLife HG-8240. It has several slots for connecting devices via local network, a special port for interactive TV and provides data transfer rates up to 1Gb per second.

Features for optical fiber

In some cases, when connecting the Internet, a terminal can be installed inside the apartment. Employees of the provider company themselves install such a device and connect fiber optics to it. Which router to choose and how to connect it to the terminal is up to you.

First you need to combine the selected router and optical terminal. This is done with a cable. If an optical network has been installed in your home, then this can be done through an optical outlet. After that, the router connects to the computer and the connection to the Internet is checked:

1. Open command prompt as administrator.
2. Run netstat -e -s followed by ping google.com.

After that, it remains to check the speed of the Internet signal. To do this, open the "Task Manager" and select the "Network" tab. If the connection speed matches the one guaranteed by the provider, then you have taken into account all the recommendations on how to connect the fiber to the router and have chosen the right router.

PON technology involves the transmission of data in the form of light pulses through a fiber optic cable. Notebooks, computers and wireless devices connected to a WiFi network do not have a built-in optical decoding module. Therefore, to work with providers of the FTTH system (optical fiber to the house / apartment), special equipment is required.

An optical signal can be converted into an electrical signal using a media converter. At its input there is an SC / LC connector or a paired SFP with TX and RX ports. The converted signal is sent to the RJ-45 port, through which you can connect a router or other network device using an Ethernet cable. A less common way to connect home devices via PON requires an ONU / ONT subscriber terminal. This article presents a rating of the best models of such devices that combine the functions of a router and a media converter.

5th place in the ranking: Eltex NTU-2W

The NTU-2W router is a good budget option for a subscriber terminal with WiFi support and built-in IPTV functions. Best of all, this model is suitable for a small apartment. It has only two LAN ports and is not equipped with high gain external WiFi antennas. However, the high reliability, low price of the Eltex NTU-2W, the presence of a USB port and a gigabit Ethernet connector make you pay attention to this device.

A noticeable drawback of the NTU-2W is that WiFi only works in the 2.4 GHz band. Of course, not all portable devices support communication at speeds greater than 300 Mbps (the limit for the 802.11 b/g/n standard). But having a 5 GHz network could not only increase the WiFi bandwidth limit, but also improve signal strength. This is due to the fact that most of the surrounding wireless equipment in neighboring apartments operates at a frequency of 2.4 GHz, and therefore can interfere with channel crossings.

Unfortunately, there is only one Gigabit Ethernet connector on this router. The second LAN port belongs to the Fast Ethernet standard, its maximum throughput is 100 Mbps. When using a high-speed Internet connection (if the actual speed from the provider exceeds 100 Mbps), it is advisable to use a 100 Mbps connector for IPTV connection, and connect the computer through a faster port.

4th place in the ranking: ZTE F660

Router with 4 RJ-45 LAN ports and two RJ-11 phone jacks. The speed of receiving information through the optical interface is up to 2.488 Gb / s, the speed of sending is up to 1.244 Gb / s. Supports the creation of up to 4 WiFi networks with different SSIDs operating at a frequency of 2.4 GHz. Despite the theoretical possibility of connecting up to 128 clients to each of them, in practice the device parameters are insufficient to serve a large office network. ZTE F660 is suitable for installation in an apartment or small office.

This router also has a USB port that can be used to connect a printer, flash drive, or external hard drive. Attached drives are accessed through a file server or online media library. This router model has built-in PON connection auto-diagnostic functions, thanks to which stable communication is maintained over the optical channel. The wireless network on the ZTE F660 also works flawlessly.

Note! Most devices of this model on the Russian market have limited MGTS firmware. To use another provider's network or access all factory functions, it is recommended to purchase a global version of the router or upgrade the firmware.

3rd place in the ranking: Huawei EchoLife HG8247H

Unlike the previous two models in this rating, the Huawei HG8247H optical terminal is equipped with two omnidirectional antennas and a CATV connector for connecting cable TV. One of the official suppliers of the router is the provider Rostelecom. The device has an unusual location of the SC optical connector. The cable is inserted through a hole and a special channel on the bottom of the router, after which it is connected to the connector on the bottom panel. Such a scheme protects the fiber optic cable from refraction and hides a long connector.

The router occupies a high position in the ranking due to its trouble-free operation and a large number of functions. On all sides of the case there are ventilation holes that reduce the heating of the board. All connectors are located on the back side. HG8247H provides Internet access via Ethernet and WiFi, the ability to use IPTV digital TV and VoIP Internet telephony. The built-in firewall protects the local network from unauthorized access and attacks aimed at slowing down work.

Important! The software of the EchoLife HG8247H has dynamic power control. The power consumption of the router varies from 7.5 to 18 W, depending on the current load.

Rank 2: Sercomm RV6688BCM

On the territory of Russia, the branded model of this router from the MGTS provider is most often found. Along with ZTE and Huawei, the Sercomm router is supplied by the provider for free use with the right to purchase. At the same time, some of the advanced settings in the RV6688BCM web interface are hidden in the firmware from the provider. To obtain administrative access, you need to contact MGTS technical support. PON module main features:

• Receive Rate (Rx): 2.488 Gbps;
• Upload speed (Tx): 1.244 Gbps;
• Connector: SC/APC;
• Maximum distance from the provider's equipment: 20 km.
• Standard used: ITU-T G.984.2 CLASS B+.

A convenient feature of the model is the presence of a “Battery” connector for backup power supply of the telephone line. If a landline phone is connected through a router, the connection will continue even after a power outage in the apartment. On the rear panel are two USB 2.0 ports, making it possible to connect an external drive and a printer at the same time. The disadvantages of the device include large dimensions and the absence of external antennas.

Rank 1: TP-Link TX-VG1530

Universal router with two RJ-11 inputs for IP-telephony, USB port and 4 LAN ports with bandwidth up to 1000 Mbps. The TX-VG1530 has two 5 dBi gain antennas. The software of this TP-Link router model supports the OMCI remote management interface, NAT and SPI firewalls. The device has a wide range of VoIP features:

• Caller ID;
• Call waiting and holding;
• Automatic detection of voice activity;
• Call forwarding;
• Conferences with multiple participants;
• Answering machine.

Advice! A flash drive or external HDD connected to this router model can be used as storage for the voicemail server.

Summing up

The editors of WiNetwork magazine recommend the TP-Link TX-VG1530 router for use in apartments connected to the Internet using PON technology. The price of the router is fully consistent with its quality and functionality. Gigabit ports allow you to organize data exchange in your home network and access the Internet at high speed. Powerful antennas provide a stable wireless connection and a wide WiFi coverage area.

Application form on the website:

You can apply. The day before the date of arrival of the master specified by you, our employee will call you back to confirm the application and clarify the time of arrival. Having come to you, the master will set up Internet access and sign all the necessary documents.

Call to the Single Contact Center:

We draw your attention to the need to leave a contact mobile phone number for prompt communication with you.

Sales and service centers:

We draw your attention to the need to leave a contact mobile phone number for prompt communication with you.

You can refuse to call the wizard, get a modem and connect it yourself (if you have the appropriate skills).

Modem package:

The modem package includes the following minimum set of components (for ZTE 831 AII and ZTE 831 CII modems), which are subject to the free connection conditions:
- ADSL modem;
- power unit;
- splitter;
- 1 Ethernet cable 1-1.5 m long;
- 1 USB cable 1-1.5 m long (for some models);
- 2 telephone cables 1–1.5 m long;
- CD with drivers and user manual.

Delivery of equipment by courier:

If you do not need a master to perform work on connecting the service, you just need to send us an application for connecting the service and get an ADSL modem via courier delivery to anywhere in Moscow and Zelenograd! The courier will deliver the contract and equipment to you at any time convenient for you at the address you specified.

After that, you just need to connect the device to a computer and a 220V network, the process of installing equipment and activating Internet access will take place automatically (when connected according to a 1 Mbps tariff plan, the modem is not pre-configured. Self-configuration of the modem is required).

Free connection:

Works performed free of charge:
- connecting the modem to a telephone socket using a splitter included in the modem package;
- connecting the modem to a computer using a cable and the Internet included in the modem package;
- connecting the modem to the computer using the USB cable supplied with the modem (at the request of the user, for some modems);
- setting up the modem in Bridge or Router mode;
- configuring a modem operating in Router mode to issue IP addresses to a computer via DHCP, which allows you to connect several computers without additional modem configuration;
- setting up a computer to work with an installed modem (setting automatic receipt of IP addresses from the modem, setting up Internet Explorer, Firefox, Safari, Opera software).

Fiber is finally coming to every home. Goodbye slow speeds, high ping and DSL modem freezes. In terms of reliability, PON technology is somewhere at the “Set it and forget it” level. In this manual, the Talmud contains fresh and up-to-date information on the Huawei HG8245H terminal.

Huawei is one of two networking monsters that have proven to be profitable in the networking market, along with Cisco. The American company also has a huge market in the Russian Federation, thanks to its excellent quality and a huge base of system integrators. The Cisco partner in Russia is organizing projects to build SCS in various business areas. Rostelecom, by the way, also actively uses Cisco equipment at the aggregation level.

ATTENTION! IMPORTANT INFORMATION! On 09/02/2015, 8245H terminals were updated on Rostelecom networks due to problems with the Wi-Fi network for subscribers (small coverage radius). The firmware remained the same - S106. But, perhaps, they covered the loophole with the superuser. Meanwhile, who had the S122 firmware continue to work normally.

Who has firmware V3R015C10S120 - try the previously documented password - telecomadmin / admintelecom

Appearance of HG8245H

Under spoiler:

Show photo

PON and LOS indicators

PON/LOS

Show

Off / Off- No connection to OLT (with provider)

Flashing fast / Off— Attempt to connect to OLT (with provider)

On / Off— Connection with the provider is established (Terminal operating mode)

Off/slow blinking (once every two seconds)— Low optical signal level. You need to check the connection, optical connector, etc.

Fast Flashing / Fast Flashing- the terminal is faulty, you should contact Rostelecom.

Specifications Huawei HG8245H

Terminal characteristics

Dimensions: 28mm x 176mm x 128mm

ISP port: GPON (SC/APC type connector)

Maximum speed from the provider: Send (Tx) - 1.2 gigabits / s, receive (Rx) - 2.4 gigabits / s

The maximum remoteness of the terminal from the transceiver module in the OLT (from the apartment to the provider, roughly speaking) : 20 kilometers

User side ports:

- 2 POTS ports ( Plain old telephone service telephony)

- 4 GE (Gigabit Ethernet - data transfer standard (1000BaseT) over twisted pair, speed up to 1 gigabit). The operating mode is auto-adaptive (automatic detection of the speed at which the port operates). The maximum length of the connected device from the ONT is no more than 100 meters.

- 1 USB port

Terminal performance (: ~23 years old

Power adapter performance (Mean time between failures, MTBF) : 60,000 hours

Maximum power consumption: 15.5 watts

Operating temperature of the device: 0 to 40 degrees Celsius

Gateway features: NAT, Internet, VoIP, DMZ, Port Forwarding

Standard Wi-Fi Operations: 802.11b/g/n

Safety: Filtering by poppy addresses, IP addresses, URLs. Anti DDoS system.

Instruction issued by the provider

In pictures, under the spoiler:

Instruction from the provider

Instructions in the form of a PDF file from Rostelecom:

Configuring HG8245H

Before you start! IMPORTANT! To configure services yourself, you need to know the VLAN ID of each of them! If you have not yet reset the terminal settings to factory reset, then they are in the menu item WAN -> WAN configuration. It is also worth considering that the settings are available only in super-user mode (how to log in through such an account is described in the section "Firmware"). If you still cannot configure the terminal yourself, then just call 8 800 100 08 00 and inform about the need to reactivate your services (this is done by the technical support of the 2nd level). After this is done (usually done on the same day) - all settings will be on the terminal again.

1. Internet settings

View Settings

On the menu WAN -> WAN Configuration press the button New:

Explanation:

2. 802.1p is a priority. For the Internet service, by default, it should be 0

4. A tick on the SSID1 item means that the Internet will work via Wi-Fi. Accordingly, if you do not need Internet via a wireless network, you can leave the checkbox unchecked

2. Setting for IP-TV

View Settings

On the menu WAN -> WAN Configuration press the button new. Next, set the parameters as in the picture below:

Explanation:

1. VLAN ID, as mentioned above, you most likely have your own. With the fact that in the picture the Internet will not work for you.

2. 802.1p is a priority. For the IP-TV service, by default, there should be a maximum, i.e. 7

3. If you have not one, but several receivers, check the boxes in the Binding Options item according to the number of set-top boxes, i.e. if one, then only LAN4, if two, then check the boxes for LAN3 and LAN4, if three - LAN2, LAN3, LAN4

3. Setting for telephony

View Settings

Telephony settings cannot be made without a special password that registers the SIP protocol. It fits on the menu. Voice -> Voice Basic Configuration and no one, especially the technical support of the provider, will tell you. Therefore, it is not possible to set up telephony on your own.

4. How to make it possible to use all ports for the Internet?

View Settings

To do this, go to the menu item LAN -> LAN Port Work Mode and check all boxes. Then, when editing or creating a WAN connection, Internet services in the menu Binding Options also check the boxes for those ports that are needed for the Internet, respectively.

5. How to do port forwarding?

View Settings

Gotta go to Forward Rules -> Port Mapping Configuration. Click NEW. wan name- select the Internet service, External Start Port- [port number], Internal Start Port[port#], Internal Host- internal IP address of the host, Protocol - TCP, External end port- [port number], Internal end port- [port number], Enable Port Mapping- tick the box. Click apply.

Problem with speed or WI-FI access

If one of your devices does not provide the desired speed or cannot connect to the Wi-Fi access point of the optical terminal, then you should do the following:

1. Enable WWM mode

WLAN and select on the left WLAN Basic Configuration:

2. Set the channel width to 40Mhz

To do this, go to the terminal settings at 192.168.100.1 (username is root, password is admin). Next, go to the menu WLAN and select on the left WLAN Advanced Configuration:

Finding an item Channel Width and set the item 40MHz:

3. Set the radio channel manually + select the region.

To do this, go to the terminal settings at 192.168.100.1 (username is root, password is admin). Next, go to the menu WLAN and select on the left WLAN Advanced Configuration. On the menu Channel choose a number 6, on the menu Regulatory Domain - Russia. Click apply

4. Disable encryption.

Optical terminals have the property of "moping", for no particular reason, to specific devices (laptops, phones). Therefore, if your device stubbornly cannot connect (or connects without access to the Internet), then you should try disabling encryption.

To do this, go to the terminal settings at 192.168.100.1 (username is root, password is admin). Next, go to the menu WLAN and select on the left WLAN Basic Configuration. In field Authentication mode choose open. Click apply

If this method helped, then you still need to think about protection. Another method of protection involves filtering by mac-address. There is a menu item for this. Security -> Mac Filter Configuration. There in the line Filter Mode we choose Whitelist. And we enter the MAC addresses of devices that will be allowed to access the Internet from this access point.

Firmware HG8245H

The problem of flashing this terminal from HG8245 without letter values ​​is that the telnet functionality was greatly reduced - there is no access to the shell. Therefore, it is not possible to “pull out” the superadmin password from the config in order to download the firmware. The only way to flash hg8245h will be if the standard password from the developers is suitable (see below)

Why flash the terminal? This can help with issues such as:

1. Low access speed

2. Unstable operation of the terminal

3. Unstable Wi-Fi

4. Superadmin rights for fine tuning.

0. Start

We look at the current firmware version in the menu Status -> Device Information

Screenshot

1. Download firmware

At the time of writing, the latest firmware version is HG8245HV300R013C10SPC122

2. We go to the terminal under the superuser.

The standard root / admin account will not give us the opportunity to download a new firmware - there simply will not be such an item. Therefore, we need the rights of the so-called. super admin. I came up with a bunch of login / password - telecomadmin/
NWTF5x%RaK8mVbD. We drive in this data on the authorization page at the address 192.168.100.1

If the login and password data did not fit, try the following combinations:

Logins and passwords

telecomadmin\admintelecom
telecomadmin\NWTF5x%RaK8mVbD
telecomadmin\NWTF5x%
telecomadmin\nE7jA%5m
root\admin

If no password matches, try to "get" the password via telnet, if it is not blocked on the terminal:

3. Save the terminal configuration to a file.

Why is this needed? The fact is that after the firmware, the terminal settings will be reset to the factory settings. Setting up the terminal on your own will be very problematic without the data that only the provider can provide, which certainly will not be happy that you are digging into the inside of the device. Thus, by saving the HG8245H config, we make a kind of backup of all settings. The file is saved already under the superuser (see point 1)

We go to the menu System Tools -> Configuration File. Next, press the button Download Configuration File

4. Download new firmware

Attention! It is recommended to carry out this operation by connecting the terminal and PC/laptop with a wire (via LAN1). Do not flash the device over Wi-Fi.

We go to System Tools -> Firmware Upgrade. We press the button Browse and select our previously unpacked firmware.

5. Restoring the performance of services (loading the config)

If after flashing your services stopped working, then you need to download the configuration file that we saved earlier (see point 2). You need to restore the configuration from under the superuser. So when typing 192.168.100.1, we enter the login / password again - telecomadmin/
NWTF5x%RaK8mVbD. We go to the menu System Tools -> Configuration File. Next, press the button Browse at the bottom of the page near the field configuration file. Select the desired file and then click Upgrade Configuration File

Telnet can be enabled in the tab Security -> ONT Access Control Configuration. It can only be enabled as a superuser. It is worth considering that in the HG8245H model, telnet was seriously cut down, there is no longer access to the shell.