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Difference between revisions of "Groups"

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(→‎Assigning Stations to Groups)
 
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{{AI}}
 
All the subscribers in the exchange can be divided into groups. The exchange can handle up to 250 different groups of stations. There is no limitation to the number of members in each group and a station can be member of more than one group. The groups are used for several purposes:
 
All the subscribers in the exchange can be divided into groups. The exchange can handle up to 250 different groups of stations. There is no limitation to the number of members in each group and a station can be member of more than one group. The groups are used for several purposes:
  
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* Voice Paging - calling all stations (All Call) or a group of stations (Group Call).
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*[[Group Call]] - Broadcast messages to all stations or a group of stations.
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* Set-up of audio program or simplex (program) conference to a group.
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*Set-up of [[Audio Program]] or [[Simplex conference]] to a group.
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* Send mail messages to a group of stations.  
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*Send [[MGR - Mail to Group|mail messages]] to a group of stations.
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* Send Call Request to a group of stations.
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*Send [[Call Request]] to a group of stations.
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* [[Group hunt]] - calling one station in a group (e.g. to access on of several telephone line).
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*[[Group hunt]] - calling one station in a group (e.g. to access on of several telephone line).
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* Restrict access on calls to/from a group of stations.
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*[[Access Restrictions|Restrict access]] on calls to/from a group of stations.
  
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Additional Information:
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'''Important Information:'''
  
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* Only stations can be members of a group.
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*In a system with IP Stations, maximum 50 stations will receive group call by default. This is because the group call audio is by default transmitted using unicast. If there are larger groups than 50 members, one have to enable group call via multicast. (AlphaPro: Exchange & System > System > VoIP tab > Enable "Multicast"). See also: [[Multicast_in_AlphaCom]]
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*Only stations can be members of a group. Groups cannot be members of groups
  
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== Group Membership Configuration ==
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==Group Membership Configuration==
 
By default all groups are empty, except group 1 which includes all stations.
 
By default all groups are empty, except group 1 which includes all stations.
  
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'''Group 16 to 48:'''<br> Empty groups, free for any use
 
'''Group 16 to 48:'''<br> Empty groups, free for any use
  
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'''Group 49:'''<br> This group is used to set access restrictions to the telephone interface [[PNCI]]. The group is empty after autoload.
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'''Group 49:'''<br> This group is used to set access restrictions to the telephone interface PNCI. The group is empty after autoload.
  
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'''Group 50:'''<br> This group is by default used for group hunt to external telephone lines when using the [[PNCI]] telephone interface. Directory number 0 makes a group hunt to group 50. The group is empty after autoload.
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'''Group 50:'''<br> This group is by default used for group hunt to external telephone lines when using the PNCI telephone interface. Directory number 0 makes a group hunt to group 50. The group is empty after autoload.
  
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'''Group 51 to 60:'''<br> These groups are used for defining [[Ringing_Group_Feature|Ringing Groups]], autoload directory numbers 6701 - 6710 are autoloaded with relation to these groups. Groups 51 to 60 are empty after autoload.
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'''Group 51 to 60:'''<br> These groups are used for defining [[Ringing_Group_Feature|Ringing Groups]], directory numbers 6701 - 6710 are autoloaded with relation to these groups. Groups 51 to 60 are empty after autoload.
  
 
'''Group 61 to 250:'''<br> Empty groups, free for any use
 
'''Group 61 to 250:'''<br> Empty groups, free for any use
  
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=== Assigning Stations to Groups ===
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===Assigning Stations to Groups===
 
To assign stations to a group, each station must be specifically included. It is possible to include a station in any number of groups.
 
To assign stations to a group, each station must be specifically included. It is possible to include a station in any number of groups.
  
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== Group Call ==
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This is done using AlphaPro - [[Groups (AlphaPro)]]
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The [[Group call feature]] is used for broadcasting of voice messages to a group of stations and/or PA amplifiers. The group call audio can be transmitted live, or it can be recordeded by the AlphaCom XE and dispatched after having listened to the recording ([[recall]]).
 
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=== Live group call ===
 
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Default directory numbers for live broadcast:
 
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* 84:   All Call to group 1
 
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* 85-88: Group Call to groups 2 - 5
 
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* 890-899: Group Call to groups 6 - 15
 
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More groups can be added from AlphaPro. In the [[Directory & Features (AlphaPro)|Directory & Features window]], select '''Insert''' and select Feature 39 and ID = group number. Enter any free directory number and an appropriate display text.
 
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To initiate a group call, dial the directory number of the desired group. Both you and the group members hear a ding-dong signal. Press the M-key to start the broadcast. Release the M-key to stop the broadcast. You can choose to exit the group call feature by C-key, or optionally wait (30 sec timeout) for someone to answer.
 
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=== Recall ===
 
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''Main article: [[Recall]]''
 
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The recall function is available as from AMC software version 11, and requires an [[licenses|Audio Messaging license]].
 
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Default directory numbers for "recall" broadcast:
 
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* 9084: Recall to group 1 (all)
 
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* 9085-9088: Recall to groups 2 - 5
 
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To initiate a group call, dial the directory number of the desired group. Press the M-key to start recording. Release M-key to listen to the message. Press 8 to dispatch the message, or C to cancel.
 
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== Answering feature (Meet Me) ==
 
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By dialing the [[Group call answer feature|answer feature 99]] on any intercom station within the answer period (default 30 seconds), you will automatically be connected to the station that initiated the group call.
 
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With several group calls are active at the same time, one must answer from a station belonging to the group.
 
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== Simultaneous Group Calls ==
 
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Several group calls can be active at the same time as long as there is no overlap in members of the simultaneous groups. If there is an overlap, the second group call is queued. However, there is a "Max Missing Members" setting per group in AlphaPro, which will let the second group call go through if the overlap is less than the number of stations specified.
 
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When several group calls are active at the same time, answering a group call can only be done from a station belonging to the group.
 
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The possibility to have simultaneous group calls can be disabled. A new group call will then meet a busy signal if the ongoing call has the same or higher priority. An ongoing group call will be canceled by a new group call with higher priority.
 
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The gong is a common resource. If two group calls are started at the same time, the second must wait till the gong is finished, no matter what the priorities are. If the repeated gong is used, the gong may be occupied for some time, according to the programming of the repeated gong.
 
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== Voice Paging Exclusion To Prevent Acoustic Feedback ==
 
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In certain situations there may be a problem with acoustic feedback between neighboring stations during Group Calls. With Voice Paging Exclusion each subscriber may exclude up to eight neighboring stations from receiving the audio during a group call initiated by the subscriber. (Before AMC 10.30: max four neighbor stations in list).
 
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In [[AlphaPro]], the list is programmed under [[Users_%26_Stations_(AlphaPro)#Group_Excl]].
 
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In [[Event Handler]], the Voice Paging Exclusion list can be accessed using the [[%ges]] macro (since AMC 11.00).
 
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Acoustic feedback can also be prevented by using the [[Recall|Recall function]].
 
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== Group Call Priority ==
 
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A group call can be assigned one out of four available priority levels:
 
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* Low
 
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* Normal (Default)
 
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* High
 
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* Alarm
 
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The group call priority works in the following way:
 
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* With simultaneous group calls: A group call is canceled by a group call with higher priority if there is overlap between members.
 
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* Without simultaneous group calls: An ongoing group call is canceled by a group call with higher priority.
 
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* Group Calls with Alarm priority. It has the following attributes:
 
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** Priority over group calls with lower priority.
 
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** [[Volume and handset override|Override of volume]]. The alarm call is always distributed at maximum volume.
 
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** [[Volume and handset override|Override of handset]]. The alarm call comes through the main speaker even if the handset is accidentally misplaced.
 
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** On-going conversations are canceled if the exchange needs the hardware resources to get the Alarm Group Call through to everybody.
 
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'''Note:''' The gong is a common resource. If two group calls are started at the same time, the second will wait till the gong is finished, no matter what the priorities are. If the repeated gong is used, the gong may be occupied for some time, according to the programming of the repeated gong.
 
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== Access restrictions for group call ==
 
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=== Group Access Level ===
 
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"Group Access Level" is used to restrict the access for a station to activate group calls.  Each group can be assigned on out of three possible access levels: Low - medium (default) - high. Each station also has a Group Access Level setting. To be able to access a group call, the station must have the same or higher level than defined for the group.
 
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=== Class of Service ===
 
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* By using the [[COS|Class of Service]] feature you can also restrict a station from access to all group calls.
 
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== Group Call Reception Filter ==
 
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Each station can activate a Group Call Reception Filter which makes it possible only to receive Group Calls with setup priority above a defined priority level.  You simply dial  793x to activate the wanted filter on the station.
 
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*7930 = Filter off
 
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*7931 = Filter 1 Group Setup low priority
 
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*7932 = Filter 2 Group Setup normal priority
 
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*7933 = Filter 3 Group Setup high priority
 
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When the feature has been activated on the station the display shows which filter is active for your station.
 
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<pre>
 
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7931 GrpFilt 1
 
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7930 GrpFiltCanc
 
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</pre>
 
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The feature is not included in [[COS|Class of Service 1]].
 
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== Programmable Gong ==
 
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The default gong pattern for the group calls is a ding-dong tone. By default there are four alternatives available:
 
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* Ding-dong
 
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* Dong-ding
 
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* Repeated gong
 
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* 4-tone gong
 
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The selected gong type and tones applies to all group calls.
 
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=See Also=
 
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*[[Global Group]]
 
  
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[[Category: AlphaCom features]]
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[[Category: Groups]]

Latest revision as of 08:21, 30 June 2022

AI.png

All the subscribers in the exchange can be divided into groups. The exchange can handle up to 250 different groups of stations. There is no limitation to the number of members in each group and a station can be member of more than one group. The groups are used for several purposes:

Important Information:

  • In a system with IP Stations, maximum 50 stations will receive group call by default. This is because the group call audio is by default transmitted using unicast. If there are larger groups than 50 members, one have to enable group call via multicast. (AlphaPro: Exchange & System > System > VoIP tab > Enable "Multicast"). See also: Multicast_in_AlphaCom
  • Only stations can be members of a group. Groups cannot be members of groups


Group Membership Configuration

By default all groups are empty, except group 1 which includes all stations.

Group 1:
Allcall 84. All stations are included by default.

Group 2 to 15:
Groupcall 85-88, 890-899. No stations included by default.

Group 16 to 48:
Empty groups, free for any use

Group 49:
This group is used to set access restrictions to the telephone interface PNCI. The group is empty after autoload.

Group 50:
This group is by default used for group hunt to external telephone lines when using the PNCI telephone interface. Directory number 0 makes a group hunt to group 50. The group is empty after autoload.

Group 51 to 60:
These groups are used for defining Ringing Groups, directory numbers 6701 - 6710 are autoloaded with relation to these groups. Groups 51 to 60 are empty after autoload.

Group 61 to 250:
Empty groups, free for any use

Assigning Stations to Groups

To assign stations to a group, each station must be specifically included. It is possible to include a station in any number of groups.

This is done using AlphaPro - Groups (AlphaPro)

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