Monzur,
Not really sure what you are asking. If you want to pass call from voxbone to AS unit and out to PSTN, then you need to configure the hopoff number in the AS.
If you want to go from PSTN to AS to VoxBone and it is SIP, you will need a sip server and configure the quintum to use the sip server.
If you need more assistance, you can contact me at mike_voip@hotmail.com
MikeM
mike_voip@hotmail.com