18. The apparatus of claim 15 , in which the Do-Not-Disturb option selectively overridden by temporarily disabling the Do-Not-Disturb option in a Private Branch eXchange (PBX).
15. An apparatus to process an incoming telephone call, the apparatus comprising: a telephony interface to receive the incoming call including speech; a Do-Not-Disturb identification module to identify when a Do-Not-Disturb option is set, the Do-Not-Disturb option identifying that a user has requested not to receive telephone calls; a voicemail system to record the incoming call when the Do-Not-Disturb option is set; an analysis module to identify content of the speech while recording the incoming call in the voicemail system when the Do-Not-Disturb option is set, the analysis module being configured to perform speech recognition on the speech to obtain at least one reference word that is included in the speech; a reference database; and an interrogation module to interrogate the reference database based on the content to identify an associated rule, the Do-Not-Disturb option being selectively overridden based on the associated rule, the interrogation module being configured to interrogate the reference database with the at least one reference word to identify the associated rule.