Nevermind, it's working. I was trying to dial 0101+number, which did not worked. But when i tried to dial directly using 1+number, it worked.

Incoming also working. Thx

Ok guys, here is the dial plan for dialing gizmo backdoor calling (0101) using PAP2.

( 011xx. | <:1747>[2-9]xxxxxxS6 | <:1>[2-9]xx[2-9]xxxxxxS0 | 1[2-9]xx[2-9]xxxxxxS0 | 0101[2-9]xx[2-9]xxxxxxS0 | *xxx[x*]. <:@sipbroker.com> )

This dial plan also has additional code to access to "SIP Broker", but additional codes does not hurt.

I also noticed an interesting thing. The numbers displayed on the caller id of other parties are different when you dial directly and using backdoor. Both numbers can be used for incoming calls. But if you want to give your number to anyone, give the number related to direct dialing as anyone can call you back to that number from ANY phone. The other number (the number displayed during backdoor calling) will work only for VOIP numbers (the phone numbers which you were successfully able to make calls using backdoor).