I am migrating a group of conventional pabx user to IPT/call manager. Currently, the pabx supports DISA (dial into a did # in pabx from home/public phone, after authentication, the caller can make outbound call on PRI line. The caller will enjoy the company agreed tariff program with PTT. Does Call manager V4.0 support similar features like conventional pabx. where to find the template to create this functions in Call manager? Does this feature in Call manager needs other telephony modules work together (i.e. Unity call handler)and provide similar features like DISA.. Need guidance from expert in this area.