I finally downloaded 12.2XN and made my Vg200 work with mgcp using 1 E1 pri with 30 channels with 100 dns assigned from my PTT.

the number is 8112000 up to 8112099.

My question is :

If I assign 4 digit DNs from 2000 to 2099 what translation pattern should I use to make incoming calls ring to the appropriate phone? (PTT's DID works for the last 3 digits)

Or else if I use 3 digit DNs from 100 to 199?

Thanks in advance