After a plurality of grooves are formed in an insulating film and in an anti-reflection film on the insulating film, a barrier metal film and a conductive film are deposited on the anti-reflection film such that each of the wiring grooves is filled therewith. The provided device prevents control problems caused by the asynchronous data, so that the selected data is precisely and stably transferred even if the transfer speed is increased to equal that of an inner system clock. Further the LED lights of all the indicating sections are matched with a reflective plate for reflecting light to reinforce the LED lights and to gain better effects. The transfer protocol provides reliable transfer of virtual stamps between the remote data center and the local printing device that accommodates resend requests, that is not limited to serial transfer and that does not require end-to-end acknowledgements. The far-end network node further determines an insertion time value indicative of a time difference between receipt of the delay measurement request signal and insertion of the delay measurement reply signal in reverse direction and communicates the insertion time value back to the originating network node.