The Extrion Knowledge Center
Practical, plain-English guides, step-by-step fixes and honest comparisons for CCTV, networks, websites, software, smart buildings and safety systems, written by engineers who install and support them in Zanzibar and across Tanzania.
What technology problem can we help you solve?
CCTV, Surveillance & Physical Security
30 min
Troubleshooting fix
A camera tile that says "No video", "Offline" or simply stays black is almost always caused by power, the cable, the network address, the password or...
View Guide
Networking, Wi-Fi & Fibre Optics
20 min
Troubleshooting fix
Slow Wi-Fi is rarely one fault. It is usually distance, thick walls, a crowded channel or simply the internet plan. One wired test tells you which hal...
View Guide
CCTV, Surveillance & Physical Security
30 min
Troubleshooting fix
A Hikvision camera that shows offline on the recorder has a power, cable, address or password problem, while a system that is offline only in Hik-Conn...
View Guide
CCTV, Surveillance & Physical Security
30 min
Troubleshooting fix
Live view works, but playback is empty or the recorder says no record file found. The cause is usually the hard drive, the recording schedule, the ove...
View Guide
Networking, Wi-Fi & Fibre Optics
30 min
Troubleshooting fix
When a MikroTik router loses the internet, the fault is almost always in one of five places: the line from the ISP, the WAN address, the default route...
View Guide
Networking, Wi-Fi & Fibre Optics
45 min
Troubleshooting fix
Wi-Fi dead zones happen when walls, distance or a badly placed router stop the signal reaching a room. Map them with a phone, rule out cheap fixes, th...
View Guide
Web Hosting, Domains & Website Management
30 min
Troubleshooting fix
A "508 Resource Limit Is Reached" page means your hosting account hit one of the limits CloudLinux sets for it, usually the number of requests that ca...
View Guide
Web Hosting, Domains & Website Management
30 min
Troubleshooting fix
When business email stops, quotes, bookings and invoices go nowhere, and often nobody notices for a day. This guide finds the cause, from a full mailb...
View Guide
CCTV, Surveillance & Physical Security
45 min
Troubleshooting fix
When an IP intercom stops working, the fault is usually power, the network, the link between door station and monitor, SIP registration, the app accou...
View GuideMore ways to learn
Your technology should make work easier, not create more work. Tell us what you are trying to solve, and we will help you map the right solution.
Engineers reply Mon – Fri, 08:00 – 17:00
We'll send a copy of the conversation to our team. Next time, the chat starts fresh.
