Isibani esingaqhumi esingu-290w esisetshenziswa ezindaweni eziyingozi lapho kukhona amagesi avuthayo nothuli, ezingavimbela ama-arcs, izinhlansi, kanye namazinga okushisa aphezulu okungenzeka ngaphakathi kwesibani ekuthungeleni amagesi avuthayo nothuli endaweni ezungezile, ngaleyo ndlela ukuhlangabezana nezidingo zokuvikela ukuqhuma.