C H A P T E R2-1Cisco ONS 15600 Reference Manual, R5.02Cards Features and FunctionsThis chapter describes Cisco ONS 15600 card features and functions.Chapter topics include:• 2.1 Card Overview, page 2-1• 2.2 TSC Card, page 2-3• 2.3 SSXC Card, page 2-6• 2.4 OC48/STM16 LR/LH 16 Port 1550 Card, page 2-8• 2.5 OC48/STM16 SR/SH 16 Port 1310 Card, page 2-11• 2.6 OC192/STM64 LR/LH 4 Port 1550 Card, page 2-14• 2.7 OC192/STM64 SR/SH 4 Port 1310 Card, page 2-17• 2.8 ASAP Card, page 2-20• 2.9 Filler Card, page 2-24• 2.10 SFP Modules, page 2-252.1 Card OverviewCaution When working with cards, wear the supplied ESD wristband to avoid ESD damage to the card. Plug thewristband cable into the ESD jack located on the lower-left outside edge of the shelf assembly.2.1.1 Card SummaryTable 2-1 ONS 15600 Cards and DescriptionsCard Description For Additional Information...TSC Card The timing and shelf controller (TSC) card performsall system-timing functions for each ONS 15600.See the “2.2 TSC Card”section on page 2-3.SSXC Card The single shelf cross-connect card (SSXC) is thecentral element for ONS 15600 switching.See the “2.3 SSXC Card”section on page 2-6