User`s manual

VLSI

Solution

VS1000+1003 VoIP Speaker Phone VSMPG

4. USING THE VOIP SPEAKER PHONE

4.2 Using as VoIP Speaker Phone

The main usage of the VoIP Speaker Phone is, as the name says, to act as a VoIP phone.

It can, however, be used as a generic sound card, too. Frequency response for the board

when used with earphones is up to 14.5 kHz with good audio ﬁdelity.

4.2.1 Setup

1. Connect the USB cable. If the unit doesn’t power up automatically, push the

“Power” button.

2. The unit will turn into a USB audio device, called “VLSI VS1000B+ADC”. If you

are using Microsoft Windows, you should see a message telling you that new USB

Audio and USB Human Interface Devices have been inserted. You might also hear

a startup sound.

3. To select audio device:

(a) Microsoft Windows: Open “Control Panel”, and select “Sounds and Audio

Devices”. Select the “Voice” tab. There you should see two selections, “Voice

playback default device” and “Voice recording default device”. Select “VLSI

VS1000B+ADC” as the device for both options.

Alternatively, if you don’t want the VoIP Speaker Phone to take over all

audio, start up Skype and open “Tools / Options” menu. There select “Audio

Settings” and set Mic, Speaker and Ring Tone to VLSI VS1000B+ADC.

(b) Mac: You can set “VLSI VS1000B+ADC” as the default audio device using

the control panel.

Alternatively, if you don’t want the VoIP Speaker Phone to take over all audio,

start up Skype and open “Preferences” menu. There select “Audio” and set

Mic, Speaker and Ring Tone to VLSI VS1000B+ADC.

device in your Skype preferences menu.

4. To check whether you have an audio connection to the board, start any sound

playing application, like Windows Media Player, and play any audio ﬁle that the

media player is capable of playing. If you can hear sound from the speaker (or

earphones, if you have earphones connected), everything has gone well. If sound is

distorted or doesn’t play, there is a problem.

5. When you have sound, check to see that there isn’t distortion on the speaker. If

the speaker clips, echo cancellation will not be as eﬀective as it would otherwise be.

So place the speaker in a way that it is not resonating with furniture or the board,

and lower system volume if needed.

6. You are now ready to make a test call.

Rev. 2.12

2008-09-18

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