This enables H.245 Tunneling mode. In H.245 Tunneling mode H.245 messages are encapsulated into the H.225 channel (port 1720). This saves one TCP connection during calls. H.245 Tunneling was introduced in H.323v2 and Netmeeting does not support it. Using both Fast Start and H.245 Tunneling can crash some versions of Netmeeting.
Horrek H.245 Tunnelling modua gaitzen du. H.245 Tunnelling moduan H.245 mezuak H.225 kanalean kapsulatzen dira (1720 ataka). Horrek TCP konexioa gordetzen du deiak martxan dauden bitartean. H.245 Tunnelling H.323v2-an sartu zen eta Netmeeting-ek ez du onartzen. 'Hasiera azkarra' eta H.245 Tunnelling biak batera erabiliz gero, Netmeeting-en hainbat bertsio kraska daitezke.