By Glen Kramer
The 1st booklet to provide an explanation for the EPON structure, examine its functionality, and annotate the normal. geared toward any engineer or graduate pupil development apparatus for broadband entry or merchant supplying such provider.
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Extra info for Ethernet Passive Optical Networks
This recommendation describes the general characteristics of a gigabit-capable PON system such as architecture, bit rates, protection, and security. 2 Gigabit-capable Passive Optical Networks (GPON): Physical Media Dependent (PMD) Layer Specification. 5 Gbps in the upstream (customer to central office) direction. 3 Gigabit-capable Passive Optical Networks (GPON): Transmission Convergence Layer Specification. This document covers specifications for the GPON transmission convergence (GTC) frame; message; ranging method; operation, administration, and maintenance (OAM) functionality; and security.
1). This encapsulation overhead is not specific to EPON, but is a property common to all Ethernet networks. In ATM networks, the user’s data units, such as IP datagrams, should be broken into multiple cells. The ATM encapsulation overhead (also known as the cell tax) is comprised of multiple cell headers, 8-byte ATM adaptation layer 5 (AAL5) trailer, and variable-size padding. The AAL5 trailer is needed for proper IP datagram reassembly, and the padding is used to fill any remaining portion of the last cell.
The FEC mechanisms are further discussed in Chap. 9.
Ethernet Passive Optical Networks by Glen Kramer