HH
1003 VoIP Speaker Phone
VSMPG
3. FEATURES
3
Features
The VoIP Speaker Phone has a user interface with seven buttons and four LEDs. It
can be powered either through USB or a rechargeable battery. The board includes the
necessary logic to recharge the battery using USB power. It boots from SPI EEPROM
that is on the board. It is compatible with several operating systems.
The unit has automatic earphone detection so that it can turn off its speaker driver
whenever earphones are inserted into the earphone connector.
Because the VoIP Speaker Phone uses standard USB interfaces, it doesn’t need special
drivers for the computer.
3.1
VoIP Speaker Phone Features
When in VoIP mode, the VoIP Speaker Phone can be used either as a speaker phone
using a speaker and a microphone, or as a personal phone when earphones are plugged
in.
The phone reports itself as a PC audio device that is capable of playing back at a sampler-
ate 32 kHz in stereo and recording at 8 kHz in mono. Auto-adjusting echo cancellation is
performed for the 8 kHz microphone signal.
The unit can be used as a telephone conversation recorder using one-touch recording.
3.2
Mass Storage Device Features
The VoIP Speaker Phone can also be used as a Mass Storage Device, storing media or
other files on MMC/SD/SDHC cards. These files can be accessed through USB in a
standard manner through Full Speed USB (12 Mbit/s). On VS1000b and VS1000c cards
upto 4 GB are supported. On VS1000d there are no special size restrictions.
3.3
Media Player Features
The media player can play MP3, Ogg Vorbis, WMA, MIDI, IMA ADPCM and WAV
files. When connected to the PC through USB, files on the MMC/SD/SDHC cards can
be accessed. The unit can also be used as a voice recorder using one-touch recording.
Rev. 2.20
2009-12-07
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