Voice Mail Integration Digits - Comdial DXP Plus Manual

GCA40–130
V

Voice Mail Integration Digits

Installers can choose the DTMF digits that the DXP Plus sends to a voice mail system. A voice mail
system uses these DTMF digits to determine system and station status so that it can properly process a
call. Installers must be versed in the voice mail's requirements before they can assign DTMF integration
digits in the DXP Plus. The system defaults the voice mail parameters to match the Comdial voice mail
system. Certain applications in countries with dialing plans different than the United States may require
different integration digits. The default digits are shown in the following list and discussed below:
Follow Extension ID = 2
Busy = 2
Incoming Intercom Answer = 9
Follow Extension ID – When the voice mail system receives a forwarded call from a ring no-answer
(RNA) or busy station, the DXP Plus sends to the voice mail system the extension number of the
forwarded call followed by this DTMF digit (n). The DXP Plus sends this digit within 500 ms of the time
the voice mail system answers the call. For example, if extension 101 is forwarded to voice mail and
voice mail answers a forward RNA or busy forwarded call, the DXP Plus sends 101n to the voice mail
system within 500 ms of the answer time.
Intercom/Answer Confirmation – The DXP Plus sends this DTMF digit to the voice mail system to
confirm that an intercom path (without dial tone) is available for the voice mail system's call transfer or
dialing use. The DXP Plus sends this digit within 500 ms of the time it detects the voice mail system's
off-hook or hookflash condition. The DXP Plus also immediately sends this digit to the voice mail system
when a station answers a voice mail transferred call. This action can alert the voice mail system to
disconnect and leave the parties connected.
Busy – If the voice mail system transfers a call to a station that is busy on a call, the DXP Plus sends this
DTMF digit to the voice system. When the voice mail system receives this digit, it can abandon the
transfer, reconnect to the call, and offer the caller whatever options the the voice mail system has
available in its programming. If the DXP Plus auto attendant transfer on busy feature is active, the DXP
Plus will not send the DTMF digit to the voice mail system thus allowing the system to transfer a second
call to the station.
DND – If the voice mail system transfers a call to a station that is in the do not disturb (DND) mode, the
DXP Plus sends this DTMF digit to the voice system. Receiving this digit allows the voice mail system to
distinguish between a busy and a DND condition and offer the caller the appropriate choices.
Incoming Intercom Answer – The DXP Plus sends this DTMF digit to the voice mail system when a
station user makes an intercom call to the voice mail system. This action allows the voice mail system to
distinguish between internal and external calls and offer the caller appropriate prompts and dialing
options.
Disconnect – When an outside line or intercom party hangs up, the DXP Plus sends this DTMF digit to
the voice mail system to command an immediate disconnect. For outside calls, the central office (CO)
must provide disconnect supervision to the DXP Plus and the installer must program the DXP Plus line
for abandon hold release and disconnect supervision. At default, the DXP Plus sends the DTMF tone for
the A character as the disconnect digit. Since a caller cannot dial an A from a telephone. This feature
eliminates callers from causing an accidental disconnect by dialing this digit on their telephone's dial pad.
112 – Understanding The Features
Intercom/Answer Confirmation = 1
Do Not Disturb = 3
Disconnect = A
DXP Plus General Description