ipPhoneChip™ VOIP PHONE CHIP
THE "field proven" ipPhoneChip™ ADVANTAGE
IAD SOFTWARE SOLUTION
Adaptive Digital Technologies ipPhoneChip™ includes all the DSP functionality necessary for a high quality IP speakerphone. The ipPhoneChip runs on the Texas Instruments TMS320C5471™ dual-core processor. Adaptive Digital supplies the complete DSP software image. The second core, an ARM7, is left for the user’s phone-specific application. Adaptive Digital can also provide some or all the ARM7 application code as part of its ipPhone reference kit, facilitating rapid product development.
FEATURES
- Available on the TI TMS320C5000™ platforms
- G.711
- G.711 Appendices I and II
- G.729A
- G.729AB
- G.723
- RTP payload packetization
- 1 to 3 packet channels for phone, conference, and/or intercom
- Tone Generation
- Conferencing
- Volume control
- Mute control
- Handset port
- Speakerphone port
- Echo Cancellation
- Automatic gain control
ipPhoneChip is controlled from the ARM7 processor via the DSP’s Host Port Interface (HPI) using provided ANSI “C” APIs. The APIs provide a functional application interface eliminating the need to know details of the host to DSP interface.
In a typical ipPhoneChip application, the ARM processor performs all network communication and manages key presses, switch settings, and displays. The ARM7 determines the product’s operating characteristics thus giving the product its look and feel. The DSP is used as a resource by the ARM7 to perform audio I/O, echo cancellation, gain control, tone generation, conferencing, and voice coding/decoding.
RUN TIME CONFIGURABLE
At run time, API’s are used to select the type of vocoder to use on a channel, set gains, adjust echo cancellation, enable and disable echo cancellation, and control conferencing and speakerphone operation.
ipPhoneChip™ Application
ipPhoneChip APIs
All API’s are provided as ANSI “C” source code to facilitate integration into the ARM7 processor environment.
SetECanParameters – configures the echo canceller
GetECanState – retrieves the echo canceller state
SetVocoder – selects the vocoder type
SetAGCParameters – configures the AGC
SetGain – sets gain/loss at various points in the signal flow
SetSwitchState – enables/disables speakerphone, Intercom, etc.
SetConferenceState – controls 3-way conferencing
GenerateTone – generates call progress and other tones
WritePacket – write a packet of speech to the DSP
ReadPacket – read a packet of speech from the DSP
DownloadLoader – download the bootload code to the DSP
DownloadProgram – download the DSP application software image to the DSP
THE "field proven" ipPhoneChip™
Available also as a 
VOIP Reference Design Kit
Open
G.PAK™ is
a GUI configurable, open source reference application for VoIP DSP software
applications.
