Abstract: Techniques for supporting handoff of terminals between a packet-switched network and a circuit-switched network are described. In an aspect, handoff between packet-switched and circuit-switched networks may be facilitated by a designated network entity in the packet-switched network. The designated network entity may interface with both the packet-switched network and the circuit-switched network, perform circuit-switched call origination, and perform handoff procedure. In one design, a first terminal may communicate with the packet-switched network for a packet-switched call with a second terminal. The first terminal may initiate handoff to the circuit-switched network via the designated network entity. The first terminal may perform handoff from the packet-switched network to the circuit-switched network based on an inter-MSC handoff procedure. The first terminal may then communicate with the circuit-switched network for the circuit-switched call with the second terminal after the handoff.

Abstract: Systems and methods for switching among networks (e.g., heterogeneous) and inter-working between a source access system and a target access system, by implementing tunneling from the AT to the target access system via the source access system. An inter-system handoff control component can facilitate setting tunneling by the mobile unit to the target access and/or between the source access system and the target access system—wherein signaling/packeting associated with the target system can be transferred over the source system.

Abstract: Method and apparatus for automatic distribution of device drivers. The method provides for a combination removable memory card and modem. Device drivers are stored in a memory portion of a PCMCIA card. Upon insertion into an access device the drivers may be automatically loaded onto the access device, permitting users to immediately utilize the device without having to load device drivers from a separate CD-ROM. Embodiments allow for a PCMCIA card with a switch that may be set to the “install” position on first insertion of the card into an access device. The user removes the card and re-installs the PCMICA card, which now acts as a modem. Additional embodiments allow for an automated process, with device drivers loaded automatically using an auto-execution script or an executable file.