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2                                                 Transport aspects


            E.3.1   40GBASE-R client frame recovery

            PCS lane alignment markers have the values shown in Table E.1 for 40GBASE-R signals which use PCS lane
            numbers 0-3.

                                 Table E.1 – PCS lane alignment marker format for 40GBASE-R

                     Lane
                    Number                SH                  Encoding {M0, M1, M2, BIP3, M4, M5, M6, BIP7}
                      0                   10         0x90, 0x76, 0x47, BIP3, 0x6f, 0x89, 0xb8, BIP7
                      1                   10         0xf0, 0xc4, 0xe6, BIP3, 0x0f, 0x3b, 0x19, BIP7
                      2                   10         0xc5, 0x65, 0x9b, BIP3, 0x3a, 0x9a, 0x64, BIP7
                      3                   10         0xa2, 0x79, 0x3d, BIP3, 0x5d, 0x86, 0xc2, BIP7

            Since a 40GBASE-R client signal must be transcoded into 1024B/1027B for rate reduction, the 64B/66B PCS
            receive process at the ingress interface further descrambles the bit-stream skipping sync headers and PCS
            lane  alignment  markers,  and  the  64B/66B  PCS  transmit  process  at  the  egress  interface  scrambles  the
            bit-stream again skipping sync headers and PCS lane alignment markers, as shown in Figure E.1.

            E.3.2   100GBASE-R client frame recovery
            PCS lane alignment markers have the values shown in Table E.2 for 100GBASE-R signals which use PCS lane
            numbers 0-19.
            The lane alignment markers transported over the OPU4 are distributed unchanged to the PCS lanes.


                                Table E.2 – PCS lane alignment marker format for 100GBASE-R

               Lane          Encoding {M0, M1, M2, BIP3, M4, M5,   Lane      Encoding {M0, M1, M2, BIP3, M4, M5,
              Number    SH              M6, BIP7}             Number    SH              M6, BIP7}
                 0      10   0xc1, 0x68, 0x21, BIP3, 0x3e, 0x97,   10   10   0xfd, 0x6c, 0x99, BIP3, 0x02, 0x93,
                             0xde, BIP7                                      0x66, BIP7
                 1      10   0x9d, 0x71, 0x8e, BIP3, 0x62, 0x8e,   11   10   0xb9, 0x91, 0x55, BIP3, 0x46, 0x6e,
                             0x71, BIP7                                      0xaa, BIP7
                 2      10   0x59, 0x4b, 0xe8, BIP3, 0xa6, 0xb4,   12   10   0x5c, 0xb9, 0xb2, BIP3, 0xa3, 0x46,
                             0x17, BIP7                                      0x4d, BIP7
                 3      10   0x4d, 0x95, 0x7b, BIP3, 0xb2, 0x6a,   13   10   0x1a, 0xf8, 0xbd, BIP3, 0xe5, 0x07,
                             0x84, BIP7                                      0x42, BIP7

                 4      10   0xf5, 0x 07, 0x09, BIP3, 0x0a, 0xf8,   14   10   0x83, 0xc7, 0xca, BIP3, 0x7c, 0x38,
                             0xf6, BIP7                                      0x35, BIP7
                 5      10   0xdd, 0x14, 0xc2, BIP3, 0x22, 0xeb,   15   10   0x35, 0x36, 0xcd, BIP3, 0xca, 0xc9,
                             0x3d, BIP7                                      0x32, BIP7
                 6      10   0x9a, 0x4a, 0x26, BIP3, 0x65, 0xb5,   16   10   0xc4, 0x31, 0x4c, BIP3, 0x3b, 0xce,
                             0xd9, BIP7                                      0xb3, BIP7
                 7      10   0x7b, 0x45, 0x66, BIP3, 0x84, 0xba,   17   10   0xad, 0xd6, 0xb7, BIP3, 0x52, 0x29,
                             0x99, BIP7                                      0x48, BIP7
                 8      10   0xa0, 0x24, 0x76, BIP3, 0x5f, 0xdb,   18   10   0x5f, 0x66, 0x2a, BIP3, 0xa0, 0x99,
                             0x89, BIP7                                      0xd5, BIP7
                 9      10   0x68, 0xc9, 0xfb, BIP3, 0x97, 0x36,   19   10   0xc0, 0xf0, 0xe5, BIP3, 0x3f, 0x0f,
                             0x04, BIP7                                      0x1a, BIP7








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