An apparatus, method and system are provided for hand-off of a communication
session
utilizing ISDN multiway capabilities, in which the communication session of a mobile
unit on a first call path is transferred from a serving base station to a target
base station. The preferred system includes a switch coupled to a serving base
station and a target base station, wherein the serving base station includes instructions
to request a second call path to the target base station and to request a multiway
feature. The switch then establishes the second call path from the serving base
station to the target base station via the switch, and combines the communication
session of the first call path with the second call path to form a multiway communication
session. The mobile unit then communicates with the target base station for continuation
of the communication session through a first leg of the multiway communication
session, and the serving base station is released from a second leg of the multiway
communication session, completing the hand-off.