EAD and AP approved from VSC

[bronxboy]

SELF: EAD : PD: Jan 3 ' 06 ---AD: 02/22/06
SELF: AP : PD: Dec31 ' 05 ---AD: 02/17/06

SPOUSE: EAD : PD: Dec31 ' 05 ---AD: 02/15/06
SELF: AP : PD: Dec31 ' 05 ---AD: 02/17/06
DAUGHTER: AP: PD: Dec31 ' 05 ---AD: 02/17/06

Did any one know what is the the diff between these two from Add:
USCIS-CSSO: USCIS-CSSO@dhs.gov(This shows on my EAD Approval email)
CRIS: USCIS-SRMT@dhs.gov(This shows on my spouse EAD Approval email)