| 摘要 |
Various embodiments are described for establishing a group call session serially. After receiving a serial group call request from a remote unit ( 101 ), fixed network equipment (FNE) ( 201 ) selects a first subset of members ( 260 ) from the targeted group ( 250 ) of units and signals those members to join the group call session. Various techniques for selecting the first subset may be employed depending on what system benefits are desired. A second subset of members ( 270 ) from the targeted group of units is also selected and signaled to join the session. This second subset may be used to invite additional units in order to achieve a maximum number of group participants. Alternatively, the second subset may be used to invite a different unit (or units) to participate. This can be triggered by a user request to invite another subset to the group session, as could occur when the user is not able to resolve the particular matter at-hand with the group members of the first subset.
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