![]() These devices must be certified and then refurbished and reissued when returned by a customer before being reissued to the next customer. ![]() Much like cable modems used for DOCSIS services, the ONT/ONU is provided by the broadband operator to the end-user. As with cable operators, Telcos also offer GPON Fiber Cable, XGS-PON, EPON, and 10G EPON fiber modem solutions.Īll of these FTTH internet technologies use an OLT (Optical Line Terminator) as a central controller, and CPE devices called ONT (Optical Node Terminal) or ONU (Optical Node Unit) that go into customer homes. With the Fiber/DSL hybrid connections, the farther away from the end-user CPE device that the fiber is terminated, the slower the speeds, as copper or ethernet connections can drop the speeds down to a slower bandwidth. Due to the need to transmit from the satellite to a ground station and then the VSAT, latency is currently unavoidable in the satellite modem service.ģ) Telco providers offer a mixture of copper-based services, like DSL variants and G.fast, along with various FTTx (Fiber-To-The-Home, Cabinet, etc.) similar to cable providers. There are even DOCSIS EPON offerings, combining DOCSIS and PON technology.Ģ) Satellite providers offer speeds up to 100Mbps but have drawbacks in latency and high costs for a much slower service compared to FTTH Internet. EPON uses a different delivery technology to achieve these speeds. EPON (Ethernet Passive Optical Network) similarly offers a 1Gbps speed, whereas 10G EPON offers a 10Gbps symmetrical speed. Symmetrical upstream and downstream transmission over a single fiber is made possible through wavelength division multiplexing (WDM). These services are offered via fiber-optic lines, with speeds of 1Gbps (GPON) and 10Gbps symmetrical (XGS-PON). Cable providers also offer fiber-based services and FTTH Internet, including GPON Fiber Cable (Gigabit Passive Optical Network) and XGS-PON. DOCSIS 3.1 can offer speeds of 10Gbps in the downstream and 1Gbps in the upstream. CableLabs is the technical standards body that has updated the DOCSIS standard from DOCSIS 1.0 to the current DOCSIS 3.1 specification. There are generally three main technologies offered today:ġ) 1) Cable providers offer DOCSIS (Data-Over-Cable Service Interface Specifications) service, a coaxial cable-based standard developed by CableLabs. GPON, XGS-PON, EPON Fiber Modems, and the Overall Path to 10G PONīroadband technology is constantly evolving, as the need and desire for faster and faster speeds drive providers to offer their customers higher bandwidth. Fiber to the Home (FTTH) Internet Technology Overview
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