In such a stack it is necessary to provide interconnection between {TAIL ~ the stacked devices} via what is known as a cascade connection in order to allow {HEAD ~ users} connected to one device to communicate with users connected to other devices 
In such a stack it is necessary to provide interconnection between { TAIL ~ the stacked devices } via what is known as a cascade connection in order to allow { HEAD ~ users } connected to one device to communicate with users connected to other devices
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH