I am not quite sure about your Galaxy Tab 10.1 device, but the following on the Galaxy Phones may help.
Skype uses the "Media" volume and not the standard "Incoming Call" volume. You'll find the Media Volume under >Settings >Sounds >Volume
Slide the volume control of the "Media" selection to the right and you should get a loude ring tone.
The default Skype ringtone is the "Modern" ringtone sound the same as the PC, except the Android phone Skype ringtone is currently not able to be changed to another choice ringtone sound. It should sound loud enough if you use your mobile phone's cable headset/mic plugged in, but the speaker (in my opinion) is not very loud as I find on my Samsung Galaxy S2 device.
To my knowledge, there is no option to make the ringtone louder, other than to check your Media Volume selection is on full.
hello this is crystal thompson i am deaf , i did try call no answer ringing today 1 :03 am in the morning late . please contact me my number is 469 941 -0052 back call me thank u . i wait for u now
In 220.127.116.115 i don't have a ring tone selection. Why cant we define our ringtone? This one id pathetic! I made a short video showing how cheezy the ring is: http://vimeo.com/49018223
Cheesy forum wont even embed a link correctly!