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58
D
URING
C
ALLS
Other features available during inquiry are:
•
Refer back, see 5.11 Refer Back on page 60.
•
Transfer, see 5.14 Transfer on page 61.
•
Conference, see 5.3 Conference on page 55.
5.9 MULTIPLE
REPRESENTED
DIRECTORY NUMBER (MDN)
The directory number assigned to a telephone can be multiple represented in other
telephones. When the
directory number
is represented as a key on other digital system
telephones, this key is called the
MDN
key. When an incoming call to the monitored
extension (on the monitoring telephone) is answered by pressing the
MDN
key, the
monitored telephone will be busy. An
MDN
key cannot be defined on an IP telephone.
For the IP telephone DBC 425 it is possible to:
•
Be multiple represented on a digital telephone as a specific line pick-up with a
function key (MNS key).
•
Monitor other extensions, see 5.9.1 Monitoring Key (MNS key) on page 58 .
5.9.1 MONITORING KEY (MNS KEY)
It is possible to monitor and to answer calls to other extensions from a programmable
function key on the IP telephone. This function is also called MNS (Multiple represented
directory number with
Dial-by-function
key) and is often used in Boss-Secretary
applications.
The following status can be indicated on the
Monitoring
key:
•
The monitored extension is free (lamp is off)
•
An incoming call to the monitored extension (lamp flashes quickly and the calling
party number is shown in the display)
•
The monitored extension is busy (lamp is lit)
•
The monitored extension has performed common parking (lamp flashes slowly)
The Monitoring keys are initiated by the system administrator.
When you log on to another IP telephone, the
Monitoring
keys are automatically
moved to the new IP telephone.
5.9.1.1
Receiving a Call
An incoming call to the monitored telephone is indicated on your IP telephone by the
Monitoring
key that starts to flash and a ring signal can also be heard. The type of
ring signal can be changed by the end user, see 10.5 Programming the Ring Signal
Type on a Line or Monitoring Key on page 84 .
The display will show the calling party number.
If the calling party information is shown or not, is set by the system administrator.