Abstract: The problem of being unable to supply prescribed fair amounts of telephone traffic to each carrier in a foreign country is overcome by a) assigning a call to one of the carriers in a foreign country at the switch where the call originated b) including an indication of the identity of the assigned carrier with the call as the call is routed from the originating switch to an egress switch and c) retaining at the originating switch an indication of the carrier to which the call is currently assigned. The indication of the assigned carrier stays with the call until either the call is completed to the assigned carrier or it is determined that the call cannot be completed to the assigned carrier. This allows the originating switch to retain control over the assignment of a call to a carrier. Furthermore, the originating switch can cause all the routes from the originating switch to the originally assigned carrier to be tried before it allows another carrier to complete the call.

Abstract: A circuit for initializing a digital computer. Whenever an operator turns on a power supply for the digital computer or activates a console switch, the circuit transmits overriding address signals. These signals divert the digital computer from a normal initializing routine to a routine provided by the initializing circuit. The routine in the initializing circuit includes digital computer instruction sequences for performing preliminary diagnostic operations and for transferring instructions to a main memory from preselected peripherals. When the routine is complete, the computer is prepared to process other programs and to operate with other peripherals.