| 摘要 |
Techniques to enable the processing of multiple calls in a spread spectrum communications system (100). The call processing state machines defined by the CDMA standards (e.g., IS-95 and IS-2000) are modified to include a "traffic channel" substate indicative of the mobile station (106) processing at least one active call. Call control (CC) state machines of various types are also provided to control the processing of the calls. To process one or more calls concurrently, a CC state machine is instantiated upon receiving an indication to process a particular call. The instantiated CC state machine is identified with, and used to control the processing of, the particular call. Upon receiving an indication to process an additional call, another CC state machine can be instantiated for the additional call. Correspondingly, upon receiving a directive to release a call, the call and its instantiated CC state machine are released.
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