Aastra 400 Series, System Manual, Page: 406 / 592

Features
406 System functions and features as of R3.0
syd-0367/1.3 – R3.0 – 03.2013
9. 5. 6 Conference
User A can set up a conference call with several users. This can be done in three dif-
ferent ways:
• Variable conference: Here the conference participants are all listed in the same
dialling string and are all called up at the same time.
• Preconfigured conference: Here the conference participants are preconfigured
in the system configuration and are all called up at the same time.
• Three-party conference (conference from enquiry call): The conference is set up
one participant at a time. The participants in the conference are called one after
the other and connected individually (see
"Three-party conference from an en-
quiry call", page 404 ).
Fig. 196 Conference
Detailed Description
Tab. 194 Variable and preconfigured conference
Interface Operating sequence / signalling on the terminal Scope
A The conference leader obtains a ring-back tone
when setting up the conference.
B, C, D The preconfigured or dialled conference partici-
pants obtain ringing signalling during the confer-
ence setup and during the conference - depending
on the system configuration
1)
:
• no tone at all
• the conference tone only once
• the conference tone regularly
1)
With three-party conference in the public exchange, the signalling depends on the network provider.
Possible interfaces:
internal, external
2) 3)
, PISN
4)
Restrictions:
• Three conference participants (up to a
maximum of 6) are permitted per con-
ference
5)
.
• Abbreviated-dialling numbers are not
permitted
2)
If more than one external user is to be switched into a conference, the settings authorising exchange-to-
exchange traffic need to be observed (see
"Exchange-to-Exchange Connections", page 241 ).
3)
With three-party conference in the public exchange, only external interfaces are possible.
4)
The settings authorising exchange-to-exchange traffic need to be observed for PISN users in the public
network or on a virtually networked PINX (see
"Exchange-to-Exchange Connections", page 241 ).
5)
Only three conference participants are permitted if three-party conference in the public exchange is acti-
vated.