• The call for broadband repair has not been completed. Just follow this procedure and save yourself two trips.

    broadband is cut off, calling customer service and saying 'no network' is basically pointless. This is the process I accumulated after three disconnection attempts: what three things to check before requesting a repair, how to clearly explain the fault over the phone, what the technician charges and which is free, and how to inspect after the repair. Following this route can save you two unnecessary detours. ...

    2026-9-8
  • LOS flashes red, don’t panic if PON doesn’t light up, check the color of the indicator light by looking at the light

    Many people are unclear about what the row of lights on the optical modem means and the LOS red light flashing and PON not lighting are completely different faults. In this article, I reviewed the color status and corresponding faults of each light using my own TEWA-750G and several optical modems repaired by neighbors, and also checked the normal range of light degradation on the management page. Following this guide can save you one visit fee....

    2026-9-8
  • IPTV broadband single line multiplexing: Practical operation of VLAN division, depending on the operator's face

    What to do if only one network cable is left during renovation, and the IPTV set-top box and broadband router are competing for cables? The IPTV vlan numbers for China Telecom, China Unicom, and China Mobile are different. This article explains how to switch a VLAN on a switch for single-wire multiplexing, and also covers the pitfalls of IPTV lag and not being able to watch live streams....

    2026-9-7
  • These four things must be followed after optical modem changes bridging, otherwise the change will be in vain

    Switching the optical modem to bridging allows the router to dial directly, reducing NAT layers by one layer, benefiting both game latency and port mapping. But fixing it is not a one-time fix. Public IP, port mapping, IPTV, and phone must be checked one by one. This article explains the entire process and follow-up clearly....

    2026-9-7
  • Huawei optical cat opens telnet and registers super password

    Ordinary user login gateway: http://192.168.1.1/login.cgi2. Enter the URL to open telnethttp://192.168.1.1/enableTelnet.cgi you can see the account and password, but there is no application button, the default is no application button, to f12 debug the console to break to line 194 if ( cUserName != useradmin ) { document.wri... ...

    2026-1-21
  • Unicom ZTE Optical Cat route does not obtain a super password through the operator and changes to a bridge

    ⚠️ Pre-warning Risk warning: This operation may cause the optical cat to become bricked, the operator may be remotely locked, or the warranty may be lost Applicability: Mainly for ZTE optical cats (such as F650, F673AV9, F677V9, F1855V2 and other models) Legal compliance: Only applicable to devices legally owned by individuals, unauthorized operation may violate the service agreement Step 1: Preparation Project Description Physical preparation Unplug the fiber optic cable, prepare toothpicks/card pins (for reset) Network environment The computer is directly connected to the optical cat LAN port through the network cable Required......

    2026-1-9
  • Jiulian Light Cat UNG153H get the super password tutorial

    Get the nine-link light cat UNG153H get the super password is actually very simple Step 1: is to open telnet, the machine defaults to turn off telnet, and open the browser with the computer. Enter http://192.168.1.1/webcmcc/telnet.html in your browser to display Open Telnet Success!. Indicates that the telnet has been successfully turned on. Step 2: Connect the telnet with the tool. The account and password are used on the label on the back of the light cat......

    2026-1-9
  • Mobile hx5-9halite turns on Telnet and turns off forced registration

    In response to the question "How to close the forced registration interface after mobile HX5-9halite turns on Telnet", the most effective way is to manually mark the registration status as "registered" after logging in to the optical cat through Telnet, so as to prevent the forced jump to port 8080. The steps are as follows (valid after 2025-12): First, make sure that Telnet is enabled and can log in with your CMCCAdmin account......

    2026-1-6
  • Beijing Mobile replaces 2.5G optical cat XG-040G-MD by itself

    Beijing Mobile 18 low-consumption broadband, add 18 yuan to speed up to 1000M, and the maintenance brother said that this situation could not replace the 2.5G cat, so he had to do it himself. Little Yellow Croaker Tao XG-040G-MD Mobile Version, the default password CMCCAdmin/aDm8H%MdA cannot be logged in, nor can it be reset. I had no choice but to take out the TTL method and do it according to the posts of the gods. I rarely go to the forum, so I made a note and posted a post for my Beijing mobile friends in need. 1. Connect TTL to TTL programming......

    2025-12-6
  • Solution to the problem of frequent packet drops on ZTE F7015T when only two network ports are plugged in

    friend just replaced the ZTE F7015T optical cat today, it is normal to plug in any network port (2.5G port and Gigabit port) network, but only two of the network ports are plugged in, the network will drop frequently, the web page cannot be opened or opened slowly, and the WeChat message is slow to send and receive. It's no problem to look at the settings in the background of the light cat. Please help me see what is wrong and how to set it up? Or is there something wrong with the light cat? This ZTE F7015T will start to drop packets as long as 2 network ports are plugged in at the same time, 99% of which is not a "setting" problem, but the following 3 types of hardware/......

    2025-11-28

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