Cisco support codes that Cisco doesn't explain. Found at Mostly Networks and duped here to save me a search.

SNT	SMARTnet Support 8x5xNBD
SNTE	SMARTnet Support 8x5x4
SNTP	SMARTnet Support 24x7x4
S2P	SMARTnet Support 24x7x2
CS	Onsite SMARTnet Support 8x5xNBD
C4S	Onsite SMARTnet Support 8x5x4
C4P	Onsite SMARTnet Support 24x7x4
C2P	Onsite SMARTnet Support 24x7x2
SAU	Software app support + upgrade
SAS	Software app support
SUSW	IPS Signatures and Software
SU1	IPS Service 8x5xNBD
SU2	IPS Service 8x5x4
SU3	IPS Service 24x7x4
SU4	IPS Service 24x7x2
SUO1	IPS Onsite 8x5xNBD
SUO2	IPS Onsite 8x5x4
SUO3	IPS Onsite 24x7x4
SUO4	IPS Onsite 24x7x2