Chapter 7. Specifications Section 3004nstallationTone CharacteristicsTable 7-17. Tone PlanTone Name Frequency Timing (seconds)CO Call TonesCO incoming call 550/400 Hz at 16 Hz ProgrammableHold recall 550/400 Hz at 16 Hz 0.5 on/35 offTransfer recall 550/400 Hz at 16 Hz 0.5 on/35 offTrunk queuing 550/400 Hz at 16 Hz 0.5 on/O.5 off/O.5 on/2.5 offCO ofiook signal 550 Hz 1 on/7 offInternal Tones (Key Phones)Dial tone 400 Hz ContinuousCO incoming call 550 Hz 1 on/3 off (Prior to CPC-B 3.1)Programmable (CPC-AII and CPC-B 3.1 orhigher)Callback 400 Hz 1 on/3 offBusy 400 Hz 0.5 on/O.5 offBusy override 400 Hz 0.25 on/O.25 off/O.25 onSplash 550 Hz 0.5 onError 400 Hz 0.5 on/O.5 offReminder call 550 Hz 4 on/l off/4 on/l off/4on 1 off/4 on/silenceCall waiting 550 Hz 0.25 on/O.25 off/O.25 on/7.25 offKey press 1kHz Duration of the key pressInternal Tones (SLTs)CO/Station ringing 20 Hz 1 on/3 offHold recall CallbackTransfer (Prior to 20 Hz 0.5 on/3.5 offCPC-B 2.11)Transfer (CPC-AII 20 Hz Programmableand CPC-B 2.11 orhigher)7-16 DES Manual - issued 6/l/95 DBS-70-300
