Catalysis of the reaction: ditrans,polycis-undecaprenyl phosphate + UDP-N,N'-diacetylbacillosamine = N,N'-diacetyl-alpha-D-bacillosaminyl-diphospho-tri-trans,hepta-cis-undecaprenol + UMP.
N,N'-diacetylbacilliosaminyl-1-phosphate transferase activity