7.9.1.3. Activating the feature 
This is not a default feature. Metering pulse sending is activated
using the FEASU AMO's feature bit.
The start of CDR for internal connections at end-of-dialing can be
configured using the AMO ZAND. In this case both pulse sending and CDR
for all internal connections starts from the ringing state.
CDR from end-of-dialing (for internal calls) is independent from the
configuration of metering pulse sending.