Windows 7 Volume Self-Tuning Communication Enhancement

Windows 7 has many interesting features. One such feature is automatic volume adjustment which happens automatically if our PC is used for some other communication purpose.
In todays tough economy we seek cheapest communication means. Some good options are to surrender own landline numbers which will cost us close to $20 (approximately) and switch to Skype ($3/month - Refer to skype website for pricing and details), magicjack etc.
If we make use of any such instruments, we use our PC for communication purposes (both incoming/outgoing calls). In such cases it is necessary to adjust the volume of PC. Here is the way ahead to do it in Windows 7 OS.
Click on Start-> Control Panel->Sound
Click on Communications tab. We see that Reduce the volume of other sounds by 80% is enabled by default. If you wish to make changes, do that. Click Apply for changes to take effect