[c-nsp] router 7609

[uugnaa]

hello all,

I am going to make an order for Cisco Router 7609 with Cisco 7600 Series Supervisor Engine 32 (8 ports Gigabit Ethernet).

My question is I need 24 Optical GE ports line card and another 7 Optical GE ports line card. I have seen the line card of 10-Port Gigabit Ethernet Shared Port Adapters.

Please somebody make me clear on this what is the SPA(Shared Port Adapter). The difference between SPA and SFP. 

regards,
uuganbat