4.11 Optional Device [5]516 Feature GuideProgramming ReferencesNoneFeature Guide References1.15.6 Direct Inward System Access (DISA)Cyclic Tone DetectionSelects the cyclic tone detection mode. Cyclic tone detection is used to determine the end of a call for aDISA CO-to-CO line conversation established through an analog CO line.To change Cyclic Tone Detection, follow the steps below:1. Change Cyclic Tone Detection.2. Set the status of the MSG2 card to "OUS", then "INS".DefaultFixedValue RangeFixed: The number of times of a tone pattern (a set of tone-on and tone-off) that the PBX receives is fixedto 4 times in the ranges of:, = 100–1300 ms, = 90 ms, = 90 msOption: The tone pattern that the PBX receives is optional as specified in Cyclic Tone Option on thisscreen.Programming References4.7.1 Slot [1-1]Feature Guide References1.15.6 Direct Inward System Access (DISA)Cyclic Tone Option—Tone On Maximum TimeSpecifies the maximum duration of the cyclic tone that will be recognized by the PBX. When the tone sentfrom the telephone company is shorter than the value set here, the PBX recognizes it as a tone-on.To change Cyclic Tone Option, follow the steps below:1. Change Cyclic Tone Option.2. Set the status of the MSG2 card to "OUS", then "INS".Default600 msValue Range100 + 10 × n (n=1–390) msABCDC CD DA B C A D B