1.5.4.4 Dial Type SelectionDescriptionThe dialling mode (rotary or tone) can be selected for each analogue trunk through system programmingregardless of the originating extension (under contract with the telephone company).There are the following modes:Mode DescriptionDTMF (Dual ToneMulti-Frequency)The dialling signal from an extension is converted to tone dialling.DTMF signals are transmitted to the trunk.Pulse Dial (Rotary) The dialling signal from an extension is converted to rotary dialling.Rotary pulses are transmitted to the trunk.Conditions• Pulse to Tone ConversionIt is possible for an extension user to temporarily switch from Pulse mode to DTMF mode so that the usercan access special services such as computer-accessed long distance calling or voice mail services. Toswitch to DTMF mode, wait for a preprogrammed time period (Default: five seconds) after the trunk isconnected, or press . This feature works only on trunks set to Pulse mode. DTMF mode cannot bechanged to Pulse mode.• It is possible to select the pulse rate for a trunk port that has been set to Pulse mode. There are two pulserates: Low (10 pps) and High (20 pps).• It is possible to assign the minimum duration of the DTMF signal sent to a trunk port that has been set toDTMF mode.PT Programming Manual References[410] LCOT Dialling Mode[411] LCOT Pulse Rate[412] LCOT DTMF Minimum DurationFeature Guide 811.5.4 Trunk Call Features
