Campus PhoNe Book software developed for, aNd origiNally used at, the Computer Services Office of the UNiversity of IlliNois at UrbaNa-ChampaigN. The server software is kNowN as "qi" aNd the clieNt is "ph". ReceNt versioNs of the software refer to CCSO (ComputiNg & CommuNicatioNs Service Office). .