When you call a group, all members joined to the group hear the call simultaneously.
Three types of groups can be created for Push to talk over cellular;
- a provisioned group; set up by the service provider or a system administrator
- an ad hoc group; created by users
- an ad hoc pro group; combination of the provisioned group and the ad hoc group
Each member is identified by a username that is given by the service provider. Group members can select a nickname for each group and that name is shown as a caller identification.
Groups are registered with a URL (Uniform Resource Locator) address.
Provisioned group
A provisioned group is a closed user group and only provisioned users are allowed to join and use the group.
To add a provisioned group to the menu:
- Press Menu and select Push to talk, Add group and Address known, and enter the group name. Select a status.
- Select the group status:
- Default to set the group as a default to call when you press the PTT key
- Listened and the group members can speak and listen
- Inactive to only save the group in the phone’s memory without activating it.
Ad hoc group
Ad hoc groups are created by users. You can select your own group name and invite members, and those members can invite more members.
To add an ad hoc group to the menu:
- Press Menu and select Push to talk, Add group and New group, and enter the name for the group.
- Select Open group and select the group status: Default, Listened or Inactive.
Ad hoc pro group
A provisioned group can be divided into separate groups according to different needs.The provisioned group members can create a new group and the members are invited to the group by sending a text message.
To add an ad hoc pro group:
- Press Menu and select Push to talk, Add group and Address known, and enter the group name in the format ’groupname+rootgroup.’
- Select the group status Default, Listened or Inactive.
Make a call to a group
When you have defined a group, invited the members to the group, and are connected to the Push to talk service, you can make a group call.
 Do it in the simulation
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To invite new members to a group by sending a text message:
- Press Menu and select Push to talk, Group list, and select the option Send invitation and select Send as SMS.
- Enter the phone number of each member or search them in the Contacts. You do not have to send a text message to invite someone to a group, you need only to ask someone to join.
- The text Group invitation received is shown on the recipient’s display. He/she can accept or discard the invitation.
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