Wireless IP Phone converts voice signals into IP packets using 802.11 standards for transmission over a Wi-Fi
network following VoIP protocols. The core cubsystems include:
- RF Transceiver/Power Amplifier: Performs the frequency translation between RF and base band signals. The power amplifier amplifies the RF signal.
- Media Access Control (MAC)/Base Band Processor: Implements 802.11a/b/g MAC functionality and provides complete modem functionality. The MAC implements 802.11/a/b/g protocols to control the communication (access) between the host (voice processor) and the access points (RF front end). The base-band processor performs the 802.11 modem operation.
- DSP/Microcontroller/OMAP: The DSP executes VoIP call controls and voice processing. The microcontroller controls the handset user interface.
- Memory: Stores executing code and data/parameters.
- Peripheral Interface: Allows user to communicate with system network, control video/audio I/O sources, and perform voice/data communication.
- Audio CODEC: Newer generation TI audio codecs, such as the TLV320AIC3254, process sound with better audio quality and longer battery life.
- Power Conversion: Converts the input power from the AC adaptor or USB to run various functional blocks.