Here is the CMT Uptime check phrase
PUBLICATIONS

Using Paradata-Driven Models to Improve Contact Rates in Telephone and Face-to-Face Surveys

Wagner, James Robert. (2013). Using Paradata-Driven Models to Improve Contact Rates in Telephone and Face-to-Face Surveys. In Kreuter, Frauke (Ed.), Improving Surveys with Paradata: Analytic Use of Process Information. 145-170.