21815 - SCTE Broadband Feb2023 COMPLETE v3

54 Vol. 45 No. 1 - February 2023 Issue spotlight on... It would appear that by any metric, the FTTH roll- out is achieving great things across the whole industry. Would you agree? Absolutely. The FTTH roll-out is now really picking up speed. However, it can sometimes stall if, for example, home or building owners do not agree to additional expenses being incurred - often due to extensive cabling works on their MDU residential properties. It must be a common problem. There is a lot of misinformation out there. Yes that’s right, but TRIAX is able to provide a solution. For example, once fibre has arrived in the building, many network operators are faced with the question of how the last few metres to the customers’ homes can be bridged. If the existing building is not easy to re-cable, the budget is already at a critical range, or if it is a listed building, then the use of the existing coaxial cables is an ideal solution. There is a lot more of that going on than people think. Most consumers in an MDU environment assume if they have full fibre broadband then it’s to their front door. It can complicate matters. But when it happens, an EoC controller (Ethernet over Coax) is installed near the fibre optic termination, which provides the transition from the fibre optic network, usually GPON, to the in-house coaxial cable network. This uses G.hn technology, which uses the lower frequency range of 2 to 200MHz on the coaxial cable. Presumably this allows the continued use of both DVB-S and DVB-C? Precisely; it enables a data rate of up to 1.6Gbit/s on the coaxial cable between the EoC controller and the end points (media converters). Up to 16 end points can be addressed from one controller port. It doesn’t matter whether the end points are connected via a star-shaped coaxial distribution or via a tree and branch structure, they’ll still connect to the EoC controller. What about if VHF radio or TV channels below 200MHz are still required? Then these frequency ranges can be masked out by the in- built electronic notch filtering in the EoC controller. These frequencies will then not be used for data transmission, but it should be noted the achievable data rate will decrease as a result. Test measurements have shown however, that even if only a frequency range of around 85MHz is available, a symmetrical net data throughput of 550Mbit/s is still possible. The G.hn signal becomes available in all connected flats. Spotlight on... Steve Staples “EoC for Operators” brings Gigabit to every home. An even faster fibre roll-out with Triax EoC One our new members TRIAX, worldwide provider of solutions in the field of reception, processing and distribution of data and signals, which includes the reception and distribution of satellite and terrestrial signals as well as IPTV. Steve Staples, Technical Sales Support Manager talked to Broadband Journal about FTTH. 1-200MHz Return path filter. The return path filter is used to bypass amplifiers in a normal coax based TV network on the data frequency of EoC. This allows the data to have a return path and the TV signal to be amplified