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2-2
Chapter 2: Directory Number (DN)
MBX IP Description / Operations & Programming Guide
RELATED PROGRAMMING
System Data
Numbering Plan, Station Number (PGM 112) … see details on page A-17
Station Data
Station Number Type (PGM 130 - Flex 1) … see details on page A-32
MADN Member (PGM 130 - Flex 2) … see details on page A-32
Prime Number Button (PGM123 - Flex 1) … see details on page A-27
Basic Features
To use DN features, or to receive incoming calls or make outgoing calls, DN must be
programmed on a Flex button, except in the case of an analog phone (does not have flex
buttons). One DN is stored in each station by default, which is M-DN. If there is no DN button
at all, it is not possible to call a number or get a call from others.
Making Calls
When making outgoing calls, a Station User can select a DN number either by pressing
the appropriate DN flex button, by going off-hook using the handset, or by dialing while the
phone is on-hook.
P-DN is seized automatically if the DN button is not explicitly pressed as in the case of
going off-hook or on-hook dialing. However, if the P-DN is busy at that time (P-DN can be
shared by other stations), the first idle DN button is selected in the order of button number
(button 1 first, button 2 second, etc.).
Once a DN is selected for an outgoing call, the tenant group number, calling station
number, CLI, COS and other DN-related information are applied for the duration of the
call. For example, if a different DN is selected for two outgoing calls, it is possible to have
different tenant groups or COS for each call.
PGM 123 BTN RANGE DEFAULT
PRIME NUMBER BTN -- among My-DN and several Sub-DNs
which are assigned to station flex buttons, determines the
first-seized DN when the user initiates a call. If prime button is not
set of invalid, the system scans sequentially from flexible button 1
to flexible Button 48 and take the unused and valid flexible button
as prime button NOTE: DN buttons of associated DSS box cannot
be a prime number button.
1 01-48 01
Release 1.0
November 2010