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3-42 Features
D 3 Features
Dial Type Selection
Description Allows an extension user to select the desired dialing mode for each
outside (CO) line regardless of the originating extension (rotary or
tone). There are three dialing modes available.
DTMF (Dual Tone Multi-Frequency) Mode
The dialing signal from an extension, either tone or rotary, is
converted to tone dialing. DTMF signals are transmitted to the
outside (CO) line.
Pulse Dial (Rotary) Mode
The dialing signal from an extension, either tone or rotary, is
converted to rotary dialing. Rotary pulses are transmitted to the
outside (CO) line.
Call Blocking Mode
Set this mode for outside (CO) lines that can receive both tone
and rotary dialing, but are under contract with the Central
Office for rotary dialing only. When dialing to a line using a
touch-tone telephone, only rotary dialing is sent to the Central
Office.
Conditions • Extension users can temporarily convert the pre-assigned rotary dialing
mode to DTMF mode (Pulse to Tone Conversion). DTMF mode cannot
be changed to rotary.
• Either DTMF or rotary dialing can be assigned for the DISA (Direct
Inward System Access) outgoing line. With DISA, pulse to tone
conversion is not possible.
• If an outside (CO) line can receive both DTMF and pulse signals and is
contracted for DTMF with a Central Office, the DTMF mode should be
selected for the line. If it is contracted for rotary mode, the Call
Blocking mode should be selected for the line.
• If a line is assigned to the Pulse Dial mode, select an appropriate pulse
speed, if necessary.
• After a held call is retrieved, the dial mode returns to the one originally
programmed for the outside (CO) line.
Programming References
Section 4, System Programming
[401] Dial Mode
[402] Pulse Speed Selection
Feature References Section 3, Features
End-to-End DTMF Signaling Pulse to Tone Conversion
(Tone Through)
Operation References Not applicable.