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OverDial: dialling will be paced multiple calls per free agent. The ratio of agents to calls is fixed. The base is a dial rate is 100% dial which is one call per free agent. The dial rate can be increase as a percentage above 100%. For example 250% would produce 2.5 calls per free agent. Values permitted are 100 -> 500.
External: Dialling means that the dialler will place a call for every dial number it receives, and when it receives each one. This allows the pacing to be controlled by an external sample provider.
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