USB client Rec. But size of the GSM Data not increasing

[John Richard Procter]

Overview
USBClient uses the Microsoft 6.10 GSM codec to compress the audio stream to the
C:\Program Files\Datatex\USBClient\Data\ xxxxxxxxxx.gsm file.
If the codec is missing or configured incorrectly USBClient would
have no way of compressing the audio stream to that file.

When viewing the USBCLient log and the following error is received
Error in ProcessDecibel : acmStreamOpen: The requested operation cannot be performed.


Troubleshooting
Click on "Start -> Settings -> Control Panel -> Sounds and Multimedia".
Now click on the "Hardware" tab
then double-click on "Audio codecs".
Click on the "Properties" tab
check if "Microsoft GSM 6.10"
appears in the list.


IF NOT IN THE LIST

Installing the GSM 6.10 codec

Click on "Start -> Settings -> Control Panel -> Add/Remove hardware".

• Click "Next",
• Select "Add/Troubleshoot a device"
• Then "Next" again.
• There will be a short delay while Window searches for devices
• Select "Add a new device"
• Click "Next".
• Select "No, I want to select the hardware from a list"
• Click "Next".
• Select "Sound, video and game controllers
• Click "Next"
• Click the "Have Disk..." button.
• Browse to "C:\WINNT\system32\mmdriver.inf"
• Click the "Open" button.
• A window with the message "Digital signature not found"
• Click "Yes".
• Select "Microsoft GSM 6.10 Audio CODEC"
• Click "Next"
• A confirmation window will appear, click "Next".
• You may get the warning about "Digital signature not found" again.
• Click "Yes" if it does.
• Once it has installed the codec, click "Finish"

IF IN THE LIST

• Click on "Start -> Settings -> Control Panel -> Sounds and Multimedia".
• Now click on the "Hardware" tab,
• Then double-click on "Audio codecs".
• Click on the "Properties" tab,
• Select "Microsoft GSM 6.10"
• Click "properties
• Check 'Use this Audio Codec'
• Click 'Settings...'

Check the following setting

Compression : 44100Hz mono
Decompression : 44100Hz mono