[1] Lucent Technologies
[2] Qual. Mgmt. Dept. 5ESS-2000 S., Bell Labs., Lisle, IL, United States
[3] Iowa State University, Ames, IA, United States
[4] University of Illinois, Urbana, IL, United States
[5] University of Chicago
[6] Quality Management Department, Global 5ESS-Prod. R., Netwk. Syst. Div. of Lucent Technol., Lisle, IL, United States
[7] Taiwan University, Taipei, Taiwan
[8] University of North Carolina, Chapel Hill, NC, United States