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The sticker at the bottom of the telecom optical modem is its account book: model, SN, default terminal configuration password, LOID, management address—every line has a chance to save its life. Fault reporting requires SN, account closure and verification requires SN, and accessing the backend requires that fine-print password. I'll explain each of the three optical modems I have on hand, and how to fix stickers that are smudged....

Can a retired telecom optical modem at home be plugged into mobile broadband and still used? I tried using the HS8145V5 my cousin had taken out and plugging it into our own mobile secondary line overnight. The PON light kept flashing for 14 hours and I couldn't register. To break it down, the two locks that the light modem cannot bypass are the standard and the authentication method. This article explains both locks and the method for matching the number....

At night, the internet suddenly disconnected while watching TV. The light modem was all green, and the WiFi was full. After checking for a long time, it turned out the main card for the integrated package was 17.3 yuan in call credit, and the broadband was suspended due to a convergence incident. Paying off outstanding fees is only the first step. Restarting the optical modem, waiting for the re-operation command to be issued, distinguishing between shutdown to keep accounts and undue fees and downtime—this article covers the entire process of resuming the machine....

You can log in from the backend of the optical modem, but the key is that your phone must be on the same network segment as the optical modem. Both the address and password are on the sticker; enter the useradmin in three steps. Check for light degradation, switch WiFi, or kick devices—these phones can handle it, but switching to bridging to VLAN, port mapping, and still need to turn on the computer....

If you forget the useradmin password in the optical modem backend, don't try it yourself. If you mess up three times, the lock will last ten minutes. Flipping through stickers, guessing the master's tricks, calling 10,000 for remote reset, factory reset—I arranged these five paths from low to high according to the cost. I went through the whole night my cousin's sticker got soaked....

Don't throw away the old optical modem you replaced with gigabit broadband. Even without fiber optic plugging, it still works: plug the cable into the LAN port as a switch to supplement the network port, change the WiFi name to be a 2.4G private network AP camera vacuum cleaner, and turn off the DHCP in one step. I'll also explain the three pitfalls of 100Mbps gigabit Ethernet, LOS red lights, and LAN isolation....

What are the differences between Tianyi Gateway 3.0 and 4.0? WiFi 5 to WiFi 6, GPON to 10G PON, Gigabit to 2.5G port. Three ways to identify which generations your family has; four types of people don't need to rush to change. After reviewing the three desired paths and a complete list of options, decide whether to spend the money. ...

The optical modem's PON light keeps flashing slowly and can't connect to the internet, but LOS doesn't turn red, indicating the fiber optic has light and is stuck at the registration and authentication stage. Waiting for enough time, light decay wiring, authentication data, and four checkpoints on the server room side were arranged according to probability. My assistant checked until midnight....

Switching from optical modem to bridge isn't something everyone should do. I went through all the benefits (public IP remote connection to NAS, port forwarding requires one less layer) and costs (IPTV black screen, ITMS pushed back at midnight, can't access the backend). Four types of people should ignore three types of people to avoid them. Here's the step-by-step order at the end of the article....

The telephone port on the optical modem can connect to landlines, and the standard phone can be plugged in and used immediately, provided the landline service in the plan is activated. If you don't have dial tones, check the phone light first. Ninety percent of the time it's because voice registration hasn't opened. Just restart the optical modem and wait a few minutes. You should also know about the pitfall of a fixed-line phone that can become mute when the power is cut off....