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135MD Evolution – Cordless DT590
Audible Signals
Audible Signals
Over and above visual information displayed on your extension's
screen and LED, there are also various tones, voice
announcements and ring tones that signal the status of your
extension, or certain associated services.
The tones heard are applicable under the following conditions and
with the following timing and frequency :
Internal Dial tone
Heard each time the handset is picked up from your extension
(excluding all activated special services)
330 Hz, Continuous
Ringback tone
Heard when you call an extension that is free.
424 Hz, 1.5 sec. On / 3.5 sec. Off
Call on-hold or Call camp-on tone
Heard when you call an extension that is busy and your call has
been placed on automatic camp-on, or when your call is placed
on-hold by a third party set.
424 Hz, 2 consecutive beeps, repeated every 5 seconds.
Busy tone
Heard when you call an extension that is busy, but automatic
camp-on is not possible for your call, or when a service request on
your extension is refused.
424 Hz, 0.5 sec. On / 0.5 sec. Off
Call Waiting Presentation tone
Heard when you receive a new call, when your extension is already
busy.
Only 1 ring signal, not repeated
Intrusion or Call Offer tone
Heard when a third party - typically an attendant - intervenes during
your current call.
424 Hz, 2 consecutive beeps, repeated every 1.4 seconds.