Telecom and Networking

https://howdns.works/ep1/ A fun and colorful explanation of how DNS works. Hey there! We made this comic to explain what happens when you type a website address in your browser. →

https://blog.hackster.io/new-tech-secures-medical-devices-by-using-your-body-as-a-conduit-for-communication-8ca7b8128f67 The article says: “Virtually all wearable devices today communicate wirelessly through either Bluetooth, WiFi, or simple RF (Radio Frequency) signals. While we could try to make those more secure, there is always the possibility that they could be intercepted or spoofed. This new technology avoids the problem altogether by allowing devices to communicate across →

https://www.theregister.co.uk/2019/03/11/eu_directive_ban_rf_radio_firmware_tinkering/ EU plans to ban the sale of user-moddable radio frequency devices – like phones and routers. The controversy centres on Article 3(3)(i) of the EU Radio Equipment Directive, which was passed into law back in 2014. →

https://techcrunch.com/2019/02/27/open-source-communities-fight-over-telco-market/ The Linux Foundation (LF) had its own booth at MWC. The booth is shared by the three LF projects: the Cloud Native Computing Foundation (CNCF), Hyperleger and Linux Foundation Networking, the home of many of the foundational projects like ONAP and the Open Platform for NFV(OPNFV) that power many a modern network. With the →

5G? IoT? Fiber Deep? 600G? We Are ready for networking at 2019! For years we have all been talking about the emergence of 5G services, the Internet of Things (IoT) and the new high-capacity, low-latency network architectures that will be needed to support the resulting onslaught of bandwidth. Higher-speed data rates are critical to electronic evolution →

An optical ground wire (OPGW or an optical fiber composite overhead ground wire) is a type of cable that is used in overhead power lines. Such cable combines the functions of grounding and communications. It has optical fibers in it, surrounded by layers of steel and aluminum wire. Here is one example of such system →

Biggest telecom operator Telia is trying to get rid of offering wired telephone service this year. Only three percent of voice calls in Finland are from traditional wired telephones. Telia has only few thousand consumer wired telephone lines left and almost 30 000 business lines. Other big operator Elisa has tried for years to actively →

I wrote around two years ago a blog posting on RJ-45 Ethernet surge protection. Now it is time to check out what is inside one cheap Ethernet surge protector. The product here is very cheap (around $2) CY UT-013 Lightning Protection RJ45 UTP STP CAT6 CAT5e Female to Female Network Lan Adapter Extender. The specifications →

https://predictabledesigns.com/wireless_technologies_bluetooth_wifi_zigbee_gsm_lte_lora_nb-iot_lte-m/ Deciding what type of wireless technology your new product should use can be an overwhelming task. This article has organized the various wireless technologies into a groups based on functionality, data speed, and operating range. This is a long, very detailed article. →

I have understood that hooking up an old telephone handset to work with a cell phone is simply a matter of connecting together the correct wires. You need to wire the microphone and speaker in the old telephone’s handset to the microphone and speaker in the cell phone’s headset connector. I decided to try that →