A method of supporting reactivation of service instances in a dormant session. A wireless device (102) sends an Origination or Reconnect message to a Base Station (104) requesting reactivation of one, all or some of its dormant service instances. The request includes a SYNC_ID previously assigned by the BS. The Base Station sends a message to a Packet Control Function (106) requesting stored service configuration information. The Packet Control Function responds with the requested information and channel resources are allocated for each service instance supported for the session.