How many different virtual connections can exist between a node and an ATM network code example

Example: How many different virtual connections can exist between a node and an ATM network

between a user and an ATM network a total of 24 bits are available for identifying virtual
connections; therefore there can be 224 = 16777216 connections. At the network-node
interface a total of 28 bits are available, so the number of connections possible is 228 = 268435456.