Patent ID: 6996414

Claim:
A method for use in establishing a group call, comprising: in a first proxy switch, detecting a group call request from a first mobile station; informing a second proxy switch of the group call request; in the second proxy switch, retrieving information from a list of members of a group call group; and based on the retrieved information, establishing a group call between first and second mobile stations (MS) via the first and second proxy switches, wherein by the first proxy switch, when a first connection to the first proxy switch for the first mobile station has been created, acquiring a first channel for the first mobile station; paging the second mobile station upon receiving an instruction from the second proxy switch; informing the second proxy switch when the second mobile station is found; when a second connection to the first proxy switch for the second mobile station has been created, acquiring a second channel for the second mobile station; and informing the second proxy switch when the second mobile station is on channel.