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The following equipping rules apply to 40G OCLD and Wavelength-selective 40G OCLD circuit packs:

• is a one-port single slot interface

• can be equipped in any slot (1-14 except slots 7 and 8 if cross-connect circuit packs are provisioned in slots 7 and 8) of the 14-slot packet-optical, converged optical, converged optical/front electrical, or converged optical/rear electrical shelves. Slots 7 and 8 of a 14-slot packet-optical shelf (NTK503SA) cannot be equipped with this circuit pack.

• can be equipped in slots 1-8, 11-18, 21-28, and 31-38 of the 32-slot packet-optical shelf.

• can be equipped in slots 1 to 7 of the 7-slot optical shelf.

• 40G OCLD and Wavelength-selective 40G OCLD circuit packs cannot be equipped in the NTK503MAE5 and NTK503NAE5 variants of 2-slot shelf.

• 40G OCLD and Wavelength-selective 40G OCLD circuit packs can be equipped in slots 1 or 2 of the NTK503LA variant of 2-slot shelf.

• can be equipped in the same shelf with any other type of circuit pack.

• any adjacent two-slot combination of 40G OCI/40G OCLD, 40/43G OCI/40G OCLD, 40G+ CFP OCI/40G OCLD, or 40G MUX OCI/40G OCLD is possible (for example, 40G OCI,

40/43G OCI, or 40G MUX OCI circuit pack on left or right of 40G OCLD circuit pack) starting in any slot with the exception of connections across slots 6 to 7 and 8 to 9 for 14-slot shelf types. Note that if you are planning full-fill unprotected or regen 40G applications, connections across the above slots will not occur, as they will be using the recommended slots 1 to 2, 3 to 4, 5 to 6, 7 to 8 (not applicable to 14-slot packet-optical shelf (NTK503SA)), 9 to 10, 11 to 12, and 13 to 14 for 14-slot shelf types.

• any adjacent two-slot combination of 40G OCI/Wavelength-selective 40G OCLD, 40/43G OCI/Wavelength-selective 40G OCLD, 40G+ CFP

OCI/Wavelength-selective 40G OCLD, or

40G MUX OCI/Wavelength-selective 40G OCLD is possible (for example, 40G OCI, 40/43G OCI, or 40G MUX OCI circuit pack on left or right of Wavelength-selective 40G OCLD circuit pack) starting in any slot with the exception of connections across slots 6 to 7 and 8 to 9 for 14-slot shelf types. Note that if you are planning full-fill unprotected or regen 40G applications, connections across the above slots will not occur, as they will be using the recommended slots 1 to 2, 3 to 4, 5 to 6, 7 to 8 (not applicable to 14-slot packet-optical shelf (NTK503SA)), 9 to 10, 11 to 12, and 13 to 14 for 14-slot shelf types.

• In a 2-slot optical Type 2 shelf assembly (NTK503LA) and when one 40G OCLD circuit pack is mated with one 40G+ CFP OCI circuit pack (OTR configuration), the 40G OCLD can be in slot 1 or 2 and 40G+ CFP OCI circuit pack can be in other slot. Similarly, one 40G OCLD circuit pack is mated with one 40G MUX OCI circuit pack (NTK525CFE5 variant) (MOTR configuration), the 40G OCLD can be in slot 1 or 2 and 40G MUX OCI circuit pack can be in other slot.

• any adjacent two-slot combination of 40G OCLD/40G XCIF or 40G OCLD/40G OTN XCIF is possible as long as 40G XCIF or 40G OTN XCIF circuit pack is in even slot (for example, 40G OCLD circuit pack on left side of 40G XCIF or 40G OTN XCIF circuit pack). The exception is slot 8 for 14-slot shelf type, and slot 10 for 32-slot shelf type.

• any adjacent two-slot combination of Wavelength-selective 40G

OCLD/40G XCIF or Wavelength-selective 40G OCLD/40G OTN XCIF is possible as long as 40G XCIF or 40G OTN XCIF circuit pack is in even slot (for example, Wavelength-selective 40G OCLD circuit pack on left side of 40G XCIF or 40G OTN XCIF). The exception is slot 8 for 14-slot shelf type, and slot 10 for 32-slot shelf type.

• two 40G OCLD or Wavelength-selective 40G OCLD circuit packs provisioned in consecutive slots (except 6&7 and 8&9 for 14-slot shelf types) can be configured as an ODU3-transparent line regenerator. The first circuit pack must be in an odd slot and the second circuit pack must be in the adjacent even slot. For the 7-slot shelf, that is slots {1,2}, {3,4}, {5,6}. For the 14-slot shelf, that is slots {1,2}, {3,4}, {5,6}, {7,8 except for 14-slot packet-optical shelf (NTK503SA}, {9,10}, {11,12}, and {13,14}. For the 32-Slot shelf, that is slots {1,2}, {3,4}, {5,6}, {7,8}, {11,12}, {13,14}, {15,16}, {17,18}, {21,22}, {23,24}, {25,26}, {27,28}, {31,32}, {33,34}, {35,36}, {37,38}. Unlike 10G OC-192/STM-64 WT, 10GEL WT, 10G OTU2 WT, and 10G OTR circuit packs, where line regeneration is achieved by back to back circuit packs interconnecting the client-side interfaces using a patch cord, the line regeneration for 40G OCLD or Wavelength-selective 40G OCLD circuit packs is achieved by back to back 40G OCLD or Wavelength-selective 40G OCLD circuit packs in adjacent slots interconnecting through backplane.

• a 40G OCI circuit pack between two 40G OCLD or Wavelength-selective 40G OCLD circuit packs, a 40/43G OCI circuit pack between two 40G OCLD or Wavelength-selective 40G OCLD circuit packs, a 40G+ CFP OCI circuit pack between two 40G OCLD or Wavelength-selective 40G OCLD circuit packs, or a 40G MUX OCI circuit pack between two 40G OCLD or Wavelength-selective 40G OCLD circuit packs provides 1+1 OTN line-side protection. Signals are exchanged between triplets using the backplane.

For 1+1 protection, the choices are:

— slots {1,2,3}, {4,5,6}, {9,10,11}, and {12,13,14} for 14-slot shelf types

— slots {1,2,3}, {4,5,6}, {13,14,15}, {16,17,18}, {21,22,23}, {24,25,26}, {33,34,35}, and {36,37,38} for 32-slot shelf type.

— slots {1,2,3} and {4,5,6} for 7-slot shelf type.

• two 40G XCIF circuit packs and two 40G OCLD or Wavelength-selective 40G OCLD circuit packs (two pairs of 40G XCIF/40G OCLD or 40G XCIF/Wavelength-selective 40G OCLD) along with two cross-connect circuit packs provide 1+1/MSP linear and 2-Fiber BLSR/MS-SPRing protection (40G TR protected group). Signals are exchanged between the six slots using the backplane.

• for 1+1/MSP linear or 2-Fiber BLSR/MS-SPRing protection, the valid protection group slots for 40G XCIF and 40G OCLD or

Wavelength-selective 40G OCLD are: {1,2,3,4}, {5,6,9,10}, and {11,12,13,14} for 14-slot shelf types and {1,2,3,4}, {5,6,7,8 except for 14-slot packet-optical shelf (NTK503SA}, {11,12,13,14}, {15,16,17,18}, {21,22,23,24}, {25,26,27,28}, {31,32,33,34}, and {35,36,37,38} for 32-slot shelf type. The 40G OCLD or Wavelength-selective 40G OCLD circuit packs are equipped in odd slots. The 40G XCIF circuit packs are equipped in even slots.

• for 1+1/MSP linear protection, the working Wavelength-selective 40G OCLD/40G XCIF or 40G OCLD/40G XCIF must be the two lower slot numbers of the 40G TR protected group. The protection

Wavelength-selective 40G OCLD/40G XCIF or 40G OCLD/40G XCIF must be the two higher slot numbers of the 40G TR protected group.

• for 2-Fiber BLSR/MS-SPRing, the east Wavelength-selective 40G OCLD/40G XCIF or 40G OCLD/40G XCIF must be the two lower slot numbers of the 40G TR protected group. The west Wavelength-selective 40G OCLD/40G XCIF or 40G OCLD/40G XCIF must be the two higher slot numbers of the 40G TR protected group.

• up to seven regenerators (two 40G OCLDs or Wavelength-selective 40G OCLD) can be supported in a 14-slot shelf (except for 14-slot

packet-optical shelf (NTK503SA) where up to six regenerators can be provisioned), up to three regenerators can be supported in a 7-slot shelf, and up to 16 regenerators can be supported in a 32-slot shelf when using the 40G OCLD or Wavelength-selective 40G OCLD circuit packs.

• two 40G MOTR groups (40G MUX OCI/40G OCLD or 40G MUX OCI/Wavelength-selective 40G OCLD while 40G MUX OCI circuit pack must be NTK525CFE5 variant) provisioned in consecutive slots can be configured as 1+1 protection using TPT (without any cross-connect). The first 40G MOTR group must be in the lower numbered slots (considered the working path) and the second 40G MOTR group must be in the higher numbered slots (considered the protection path). The working/protection path slot is the slot number in which the working/protection 40G MUX OCI is seated. The 40G MUX OCI circuit packs must always be in the odd slots and the 40G OCLD or Wavelength-selective 40G OCLD circuit packs in the adjacent even slots. The working and protection 40G MUX OCI circuit packs require an XFP on the client interface. For 1+1 TPT protection, the choices are

— slots [{1,2}, {3,4}] and [{9,10}, {11,12}] for 14-slot shelf types

— slots [{1,2}, {3,4}], [{13,14}, {15,16}], [{21,22}, {23,24}], and [{33,34}, {35,36}] for 32-slot shelf type.

— slots [{1,2}, {3,4}] for 7-slot shelf type.

• two 40G OTR groups (40G+ CFP OCI/40G OCLD or

40G+ CFP OCI/Wavelength-selective 40G OCLD) provisioned in

consecutive slots can be configured as 1+1 protection using TPT (without any cross-connect). The first 40G OTR group must be in the lower numbered slots (considered the working path) and the second 40G OTR group must be in the higher numbered slots (considered the protection path). The working/protection path slot is the slot number in which the working/protection 40G+ CFP OCI is seated. The 40G+ CFP OCI circuit packs must always be in the odd slots and the 40G OCLD or

Wavelength-selective 40G OCLD circuit packs in the adjacent even slots.

The working and protection 40G+ CFP OCI circuit packs require a CFP on the client interface. For 1+1 TPT protection, the choices are

— slots [{1,2}, {3,4}] and [{9,10}, {11,12}] for 14-slot shelf types

— slots [{1,2}, {3,4}], [{5,6}, {7,8}], [{11,12}, {13,14}], [{15,16}, {17,18}], [{21,22}, {23,24}], [{25,26}, {27,28}], [{31,32}, {33,34}], and [{35,36}, {37,38}] for 32-slot shelf type.

— slots [{1,2}, {3,4}] for 7-slot shelf type.

• the maximum number of back-to-back 40G OCLD or Wavelength-selective 40G OCLD regenerator sites is eight.

• requires high flow cooling fan modules (NTK507LDE5, NTK507MDE5, NTK507LS, and NTK507MS) when equipped in a 14-slot shelf.

• does not use any cross-connect capacity and can be installed in shelves equipped with or without cross-connect circuit packs

The following restrictions on using a cross-connect circuit pack are applied when deploying a 40G OCLD or Wavelength-selective 40G OCLD circuit pack:

• In a 14-slot shelf type (except for 14-slot packet-optical shelf type;

NTK503SA), you cannot provision a 40G OCLD or Wavelength-selective 40G OCLD circuit pack in slot 7 or 8 if one of these slots already contains a cross-connect circuit pack. Slots 7 and 8 of a 14-slot packet-optical shelf (NTK503SA) cannot be equipped with 40G OCLD or

Wavelength-selective 40G OCLD circuit packs.

• In a 14-slot shelf type (except for 14-slot packet-optical shelf type;

NTK503SA), you cannot provision a cross-connect circuit pack in slot 7 or 8 if one of these slots already contains a 40G OCLD or

Wavelength-selective 40G OCLD circuit pack. Slots 7 and 8 of a 14-slot packet-optical shelf (NTK503SA) cannot be equipped with 40G OCLD or Wavelength-selective 40G OCLD circuit packs.

• In a 14-slot shelf type (except for 14-slot packet-optical shelf type;

NTK503SA), when the 40G OCLD or Wavelength-selective 40G OCLD circuit packs are installed in slot 7 or 8, only Broadband circuit packs or Photonic circuit packs can be provisioned in the other interface slots (slots 1 to 6 and 9 to14), as MSPP interface circuit packs require a

cross-connect circuit pack. Slots 7 and 8 of a 14-slot packet-optical shelf (NTK503SA) cannot be equipped with 40G OCLD or

Wavelength-selective 40G OCLD circuit packs. See Part 1 of 6500 Planning, NTRN10CF (Chapter 3) for a full list of supported Broadband and Photonic circuit packs.