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Getting Started Data Calls
calls during an ongoing MPDS call. For further information
about this feature, see section 3.4.2.
3.4.2 Call waiting
As indicated in the previous section the user can enable the
Call Waiting Notification in order to receive incoming voice
calls during an MPDS session. The enabling can optionally
be restricted to specific phone numbers.
The 4-wire and 2-wires interfaces can be configured for
usage for the Call Waiting Notification. When the
notification arrives, the user is notified by a special ringing
tone and a message is shown in the display if the 4-wire
handset is selected for the service.
In case of an incoming call during an MPDS session with
the Call Waiting Notification enabled, the user has three
options:
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1. The user can reject the pre-emption of the MPDS
connection by pressing “*” or “Exit” on the 4-wire
handset (if enabled) or by taking an enabled 2-wire
phone off hook, pressing “*” and placing the phone on
hook again. The ringing stops on all handsets that are
configured for the service.
2. The user can accept the pre-emption of the MPDS
connection by pressing “OK” or “#” on the 4-wire
handset (if enabled) or by taking an enabled 2-wire
phone off hook, pressing “#” and placing the phone on
hook again. The MPDS session is now deregistered and
the call gets through after a short while. The phone(s)
to which the call is routed starts ringing and the call
can be answered. Note that the call can be answered
on another interface than the interface that was used
to accept the call – e.g. a fax will normally only be
30 May 2005