Optical Splitter

Passive Optical Network-hydraulic fittings-PEM Fastener
Standards (ATM Passive Optical Network). This was the first standard passive optical network. It has been used primarily for business applications, and was based on ATM. BPON (Broadband PON) is a standard based on UPON. It adds support for WDM, dynamic and allocation of upstream bandwidth, and survival. He also created a standard management interface, called OMCI, between the OLT and UN / ONT, enabling mixed-vendor networks. IEEE 802.3ah EPON or GEPON (Ethernet PON) is an IEEE / EFM standard for using Ethernet for packet data. 802.3ah is now part of the standard IEEE 802.3. There are currently more than 25 million installed EPON subscribers. Commercial capacity upgrade to 10G EPON will be available in 2010 (see IEEE 802.3av, 10G-EPON). ITU-T G.984 GPON (Gigabit PON) is an evolution of the BPON standard. It supports higher rates, enhanced security, and choice of Layer 2 protocol (ATM, GEM, Ethernet). In early 2008, Verizon had installed over 800,000 lines of mid-year. British Telecom, Mobily-saudiarabia, Etisalat, UAE, and AT & T are advanced testing. IEEE-10G EPON 802.3av (10 Gigabit Ethernet PON) is an IEEE working group for 10Gbit / s, compatible with 802.3ah EPON. 10GEPON uses separate wavelengths for 10G and 1G downstream. 802.3av continue to use a single wavelength for 10G and 1G upstream with the separation TDMA. The working group concluded 802.3av with inclusion AV 0.3 in IEEE 802.3. Commercial 10G EPON equipment in 2010. IPS910 RFoG SCTE (RFoverGlass) is an interface Subcommittee SCTE standard practices in development for Point to Multipoint (P2MP) operations that has a wavelength compatible with the proposed plan data PON EPON solutions, including GEPON and 10G-EPON. RFoG offers a PON FTTH architecture as for the WHO without having to select or deploying PON technology. History Early work on architectures for fiber effective care has been taken in the 1990s by the Access Service Network Complete (FSAN) working group formed by the major telecommunications service providers and system suppliers. The International Telecommunication Union (ITU) has done additional work, and has since standardized on two generations of PON. The older of the ITU-T G.983 standard is based on Asynchronous Transfer Mode (ATM), and was therefore called (ATM PON). Further improvements to this original standard and the gradual Disgrace of ATM as the protocol has led to the complete, final version of ITU-T G.983 be referred to more often than PON broadband or BPON. A type UPON / BPON provides 622 megabits per second (Mbps) (OC-12) of downstream bandwidth and 155 Mbps (OC-3) upstream traffic, although the standard accommodates higher rates high. The ITU-T G. 984 (GPON) standard represents a boost, compared to BPON, in both the total bandwidth and bandwidth efficiency through the use of large packets of variable length. Again, the standards permit several choices of speed, but the industry has converged on 2488 gigabits per second (Gbps) of downstream bandwidth and 1.244 Gbps of upstream bandwidth. GPON Encapsulation Method (GEM) allows very efficient packaging of user traffic segmentation framework. The IEEE 802.3 Ethernet PON (EPON or GEPON) standard was completed in 2004 (http://www.ieee802.org/3/), as part of the Ethernet First Mile Project. EPON uses Ethernet 802.3 frames with symmetrical 1 Gbps rates upstream and downstream. EPON is applicable for data-centric networks, and the full range of voice, data and video. 10Gbit / s EPON and 10G EPON-was ratified as an amendment to the IEEE 802.3 IEEE 802.3av. 10G EPON soutient-10Gbps/1Gbps. The flat surface downstream wavelength simultaneous operation of 10 Gbit / s over a wavelength and 1 Gbps wavelengths to separate the management of IEEE and IEEE 802.3ah 802.3av on PON concurrently. The upstream channel can handle though.