Problems will arise if the line is configured to expect a fixed address device, and the device connected is expecting to be allocated an address.

In this example, the network will attempt to activate device 0, which doesn't exist. The TE, which currently has no address, ignores this activation request because the address doesn't match his own. It waits for the allocation of a dynamic address. The net result of this is that the communication between the network and device is never initialised.