4.1.3 Dial Mode SelectionDescriptionThe dialing mode (rotary or tone) can be selected for each analog CO line through system programmingregardless of the originating extension (under contract with the telephone company).Mode DescriptionDTMF (Dual ToneMulti-Frequency)Numbers dialed by an extension user are transmitted to the CO lineusing analog tones.Pulse Dial (Rotary) Numbers dialed by an extension user are transmitted to the CO lineusing analog pulses.Conditions• Pulse to Tone ConversionIt is possible for an extension user to temporarily switch from Pulse mode to DTMF mode in order to accessspecial services such as computer-accessed long distance calling or voice mail services. To switch toDTMF mode, wait for a preprogrammed time period (Default: 5 seconds) after the CO line is connected,or press . This feature works only on CO lines set to Pulse mode. DTMF mode cannot be changed toPulse mode.• It is possible to select a pulse rate for the CO line port which has been set to Pulse mode. There are twopulse rates: Low (10 pps) and High (20 pps).• It is possible to assign the minimum duration of the DTMF signal sent to the CO line port which has beenset to DTMF mode.PC Programming Manual References3.30 [1-1] Slot—Port Property - LCO Port→ Dialing Mode→ DTMF Width→ Pulse Speed3.36 [1-1] Slot—Port Property - T1 Port→ CO Dial Mode→ DTMF Width→ CO Pulse SpeedPT Programming Manual References[410] LCOT Dialing Mode[411] LCOT Pulse Rate[412] LCOT DTMF Minimum Duration4.1.4 Dial ToneDescriptionThe following dial tones inform extension users about features activated on their extensions:Each dial tone type has two frequencies, such as dial tone 1A and dial tone 1B.Document Version 2009-12 Feature Manual 674.1.4 Dial Tone
