Alcatel Unleashed

can any body can give solution ?

As was answered before - for barring you must use discriminator. If you have different trunk group for different provider - use different discriminator (in trunk group - logical from 0 to 7). In discriminator rule you must declear number of digits (not 20 or 255).
F.e. you want dial 0(outgoing prefix)+12345678 (call provider) and in DTMF want to dial 90123456.
In discriminator rule must be string like this:
call number 1;
number of digits 8. (we not count prefix or dialed in DTMF digits).

i resolved the problem in the site.
thaks vad & frank

Try setting masking release and the other masking parameter to false and reducing the off hook presumption timer in the trunk category. You may find that it limmits the time a user has to pause between digits while dialing, but you should be able to decrease the time the before DTMF is invoked