- Absolute: the absolute timer defines the time elapsed from the hour. For example, configuring a 15 minutes timer when the call has started at 03:18 will result in records that have a starting time at 03:30, 03:45, 04:00, 04:15, etc.
- Relative: the relative timer is from the start of the call. For example, configuring a 15 minutes timer when the call has started at 03:18 will result in records that have a starting time at 03:33, 03:48, 04:03, 04:18, etc.
If the trader voice recording is configured with active-active (2N) fail over, and Deduplicate Recordings policy is required, absolute splitting is recommended. The relative splitting is based on the recording start, and it may create recording pairs that are not possible to match.
VAD and call splitting also allow a useful feature called Do Not Keep Openline CDRs Without VOX Activity which means that the system will not create CDR-Only records for open lines when there was no media activity at all for a call segment. A call segment means a call that was split using the call splitting timer. Without this feature, the system creates CDR-Only records for open lines based on the call splitting timer configuration regardless if there was call activity or not. This can lead to creating a very large number of CDR-Only records in the system (because the open lines can be on for a very long time, see above) unnecessarily.