A voice communication controller ) is described herein which can automatically enable an outbound dual tone multi-frequency feature for one of it’s extensions that is attached to a phone which belongs to a user while that user is or is likely to be participating in a session with an external DTMF communication system system, or a voice mail system). Customers of the hosting platform are customers wanting to outsource the management of their searchable content. The space maintaining member restricts movement of a holder used to support a charging roller which comes into contact with a photoconductor by pressure of a pressure member, providing use convenience and operation reliability. Estimator variance may be reduced through a stratified sampling scheme that leverages commonality, such as an average cost of execution, between queries based on query templates. A method and a computer program product are provided.