8860ch08.fm Draft Document for Review September 23, 2019 1:27 am 4. The  Specify Coordinated Timing Network (CTN) members  window opens. Select the  CPC name (only CPCs not belonging to a CTN are shown). In this example, only one CPC  (ARIES) is displayed. Select the CPC and click  NEXT  to continue (Figure 8-32). Figure 8-32 Specify Coordinated Timing Network (CTN) members Figure 8-31 Set the Coordinated Timing Network (CTN) ID  180  IBM z15 (8561) Configuration Setup