2.6  

Conference 
 

Definition  
A user can combine up to five stations into a conference call.
There can be more than 5 users if the participants residing on a different node. Users can also join conferences on different nodes into a single conference.
The initiating party is defined as the conference leader. He can individually disconnect stations from the conference or release the conference entirely as necessary. In addition, the user can also exit the conference without terminating it. In this case, the new conference leader is the user who has been in the conference the longest. If only external stations remain in the conference and no backward release criterion is present (e.g., analog CO), the timer "Time until warning tone in main station interface transit con" is started. This can be configured to between 0 and 255 minutes. The default setting is 5 minutes. Once this timer has expired, the remaining stations receive a warning tone and the timer "Time from warning tone until release ..." is started. This can be configured to between 0 and 10 minutes. The default setting is 10 seconds. Once this timer has expired, the conference is concluded.
Members of the conference call can leave the conference by going on-hook or by answering a call waiting. However, they must call the conference master to be added on to the conference once again.
The status of the "Transit allowed via Hook-on" station flag is evaluated in V5.0 SMR04 or later. The following table shows the different ways in which the conference can proceed if the conference leader hangs up. The "End conference", "Drop last conf. party" (for USA only) and "Leave conference" menu options offered during a conference are still independent of the station flag. The same also applies when convening (*3) and releasing (#3) a conference using a code number.

 Stations  
 Station flag "Transit allowed via Hook-on"  
 A = Conference initiator  
 B  
 C (D ...)  
 selected  
 deselected  
 Internal  
 Internal  
 Internal  
 Stations B and C (D ...) are connected together.1  
 The conference is ended and all connections are closed.  
 Internal  
 Internal  
 External  
 Internal  
 External  
 External  
1If internal stations still remain in the conference, the new conference leader is the user who has been in the conference the longest. If the new conference leader hangs up, the status of the latter's "Transit allowed via Hook-on" flag determines how the conference proceeds.

Model-Specific Data  

 Subject  
 HiPath 3800  
 HiPath 3550  
 HiPath 3500  
 HiPath 3350  
 HiPath 3300  
Feature available in  
 x  
 x  
 x  
Hardware requirements  
 -  
 -  
 -  
Software requirements  
 V5.0 or later  
 V1.0 or later  
 V1.0 or later  
Conferences per system  
 12  
 3  
 3  
Stations per conference  
 5  
 5  
 5  
External stations per conference  
 4  
 4  
 4  

Dependencies/Restrictions  

 Subject  
 Dependency/Restriction  
Conference  
Internal users cannot participate in more than one conference in the system (except with CorNet-N).  
In the system, a conference is considered to be a "full conference", when more than two stations are connected in a conference and the other stations have already hung up.  
Conference leader  
Only internal stations can be conference leaders.
Analog stations  
Analog stations are not checked to see if they are voice devices. The following restrictions apply to HiPath 3350/HiPath 3300: Analog stations can set up no more than a three-party conference. Up to four analog telephones can be passive participants in a conference.  
Voice, data transmission  
You can set up a conference between voice stations only.  
Call charges  
Toll charges are assigned to the party who set up the toll call. When a call is transferred or released, the toll charges are assigned to the remaining internal station from the moment the call is released.  
Conference participants when external applications are connected via CSTA  
CSTA Phase II places a limit on the length of CSTA messages. Conferences with more than three participants exceed this limit and can cause the connected applications to malfunction when at least one station is monitored by CSTA.  
This is why the option to expand conferences to include more than three participants is not offered in the menu and will be rejected if you try to invoke it with a code.  
DISA  
The conference feature cannot be invoked from an external DISA station.  
Parking  
Conference calls cannot be parked.  
Silent Monitoring  
Silent Monitoring limits the maximum number of conferences. Maximum number of conferences possible in system = maximum number of simultaneous Silent Monitoring stations.  
Conferences with IP workpoint clients  
For this feature gateway channels of the HG 1500 board(s) will be used. The number of workpoint clients (TDM and IP) involved in the conference determines the number of necessary gateway channels. Information concerning this topic can be found in the Service Manual HiPath 3000/5000.