Many guys are not able to do WiFi tethering using Pantect Burst. When trying to enable we get "Call 611". So here is the simple solution --
For Android 2.3 and 4.0
A simple method for switching on Tethering:
1. Install from market Secret Codes Revealer (play.google.com/store/apps/details?id=com.afp_group.software)
2. Search Codes
3. List Codes
4. Tap on "softapactivation"
5. Launch code
6. Now we on SoftapHiddenMenu
7. Check on the first 2 checkboxes
8. Save
9. Reboot
10. Enjoy full tethering
Note - Copied from XDA