Your organization wants to call from one location to another via your private leased line, which is passing only IP
traffic. Because of this, you decide that a VoIP solution is the best way to do go about providing communication
between the two offices.
As Network Administrator, you note that each site is using a Cisco 2610. You also find that there is room to put an
FXS port on each of them. To make calling easy for the users, create a simple dialing plan. For the phone attached to
Router A, dial 1001, and for the phone attached to Router B, dial 1002....